Author Topic: Microsat-R - PSLV DL C44 - January 24 2019  (Read 15030 times)

Offline input~2

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Microsat-R - PSLV DL C44 - January 24 2019
« on: 08/18/2018 07:18 am »
According to SHAR director this should be the last 2018 launch from Sriharikota
« Last Edit: 01/24/2019 08:17 pm by input~2 »

Offline worldtimedate

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Re: EMIsat - PSLV C44 - December 2018
« Reply #1 on: 09/02/2018 11:28 pm »
According to SHAR director this should be the last 2018 launch from Sriharikota

In December, Isro's PSLV C44 will launch Emisat.

Source : Isro to launch 19 missions in just 7 months

Offline zubenelgenubi

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Re: EMIsat - PSLV C44 - December 2018
« Reply #2 on: 09/17/2018 07:43 pm »
I see that Gunter has listed the PSLV-CA as the LV version for PSLV C44.

Am I right to deduce that this is because the primary payload, EMIsat, is using the SSB-2 microsatellite bus?  And, even if there are secondary passengers, they would not overfill the PSLV-CA payload mass limits to a LEO?

(SARAL also used this satellite bus and was launched to a low polar orbit (SSO?), with secondary payloads.  SARAL massed only 346 kg.)

EDIT: cross-post/response re: similar question about the LV version for PSLV C43:
Exactly - the small mass of all payloads is a very strong hint, that the CA version will be used.
« Last Edit: 09/17/2018 09:11 pm by zubenelgenubi »
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Offline zubenelgenubi

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #3 on: 12/01/2018 07:21 pm »
Belated cross-post re: ISRO launch cadence, apparently placing EMIsat's launch in January 2019:
https://www.ndtv.com/science/isro-to-launch-10-missions-in-100-days-satellite-internet-to-make-debut-1950013
Quote
Here is what Dr K Sivan told NDTV:

Q) In these next few weeks, how many missions are you doing? You have quite a packed schedule?

A) Actually that is true. If you have seen our schedule up till January,  we have 10 missions; that is, four launch vehicle missions and six satellite missions. The immediate mission is PSLV C-43. Then the GSLV will launch GSAT-7A.  Then another PSLV is going to launch EMISAT. Then GSLV Mk III will launch Chandryaan-2. Alongside, we have two procured launches that is GSAT-11 and GSAT-31. So we have totally 10 missions in a packed mission schedule.
« Last Edit: 12/02/2018 05:47 pm by zubenelgenubi »
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Offline sanman

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #4 on: 12/03/2018 05:06 am »
Wasn't there a SPADEX (SPAce Docking EXperiment) payload that was supposed to be launched along with EMIsat?
Whatever happened to that?
« Last Edit: 12/03/2018 05:08 am by sanman »

Offline Steven Pietrobon

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #5 on: 12/03/2018 05:46 am »
Belated cross-post re: ISRO launch cadence, apparently placing EMIsat's launch in January 2019:

Where does it say EMISAT in January? It says EMISAT is between GSAT 7A (19 December) and Chandryaan 2 (31 January), so it could still be launching in December, although I agree January is more likely.
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Offline A.K.

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #6 on: 12/03/2018 01:07 pm »
Where does it say EMISAT in January? It says EMISAT is between GSAT 7A (19 December) and Chandryaan 2 (31 January), so it could still be launching in December, although I agree January is more likely.
Given that F11 is not going to take off earlier than December 19th, there are little chances of C44 getting launched within next 12 days.

Offline zubenelgenubi

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #7 on: 12/04/2018 02:54 am »
Sorry, Steven.  I should have included the other item below...

The second piece of evidence is from:
ISRO has three launches planned over November and December.

November 14th - GSLV Mk-3 D2/GSAT-29    (Second Launch Pad)
November 26th - PSLV C43/HySiS + 30 co-passengers    (First Launch Pad)
December 14th - GSLV Mk-2 F11/GSAT-7A       (Second Launch Pad - First use of SVAB)

Source: https://timesofindia.indiatimes.com/city/kochi/isro-lines-up-3-rocket-launches-in-two-months/articleshow/66538316.cms
And:
Quote
Isro will have a busy year-end with three rocket launches.

The article doesn't preclude another launch, but the wording appears to imply an inclusive listing of launches planned through December 31.
« Last Edit: 12/04/2018 02:56 am by zubenelgenubi »
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Offline isro-watch

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #8 on: 12/05/2018 03:06 pm »
Based on currently available information in the media, post launch speeches, interviews, EMISAT will be launched some time in end Dec or early Jan 2019. I expect it to be a PSLV-CA and launched from FLP.

Chandrayaan-2 should follow soon after from SLP on a MKIII

Offline A.K.

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #9 on: 12/13/2018 05:34 am »
In a first, Isro will make dead rocket stage ‘alive’ in space for experiments - TOI
https://timesofindia.indiatimes.com/india/in-a-first-isro-will-make-dead-rocket-stage-alive-in-space-for-experiments/articleshow/67067817.cms
Quote
NEW DELHI: Can a dead rocket in space be anything but debris? Isro believes it might actually be useful. Feted for its frugality and tech savvy, the Indian Space Research Organisation is working on a new technology where it will use the last stage of the PSLV rocket for space experiments. It will perform a technology demonstration of this new system when it launches the PSLV C44 rocket in January.
Quote
Talking to TOI here, Isro chairman K Sivan said, “Normally, the last stage of a PSLV rocket after releasing the primary satellite in space becomes dead and categorised as debris. It remains in the same orbit as that of the released satellite. Now, we are working on a new technology where we will give life to this “dead” last stage of PSLV, also called PS4 stage, for six months after its launch. This rocket stage will double up as a satellite. This will be the most cost-effective way to perform experiments in space as we don’t have to launch a separate rocket for the purpose.” He said that “India is the only country in the world that is working on this new technology”.
Quote
Explaining the technology, the chairman said, “The rocket stage of PSLV C44, which will be carrying a microsat as the primary satellite in January, will be made alive with the help of new systems that will include batteries and solar panel. Even after the primary satellite separates from the PSLV, the last stage of the rocket will remain active and can be used as an experimental platform for new space technologies. Students or space scientists can use this “alive” rocket stage for space experiments for free. They can attach their small experimental module or satellite (micro or nano) in the last stage and can perform experiments in space once the PSLV delivers the primary satellite into its orbit.” He said that Isro “can do the same with the GSLV rocket as well where we can use its last stage as an experimental platform”.

Edited by mod
« Last Edit: 12/13/2018 07:58 pm by input~2 »

Offline K210

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #10 on: 12/13/2018 07:19 am »
I am doubtful this will launch in January. I hope isro proves me wrong.

Offline isro-watch

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #11 on: 12/13/2018 02:29 pm »
As per ground reports, PSLV will launch right behind GSLV-F11

Offline K210

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #12 on: 12/13/2018 02:31 pm »
As per ground reports, PSLV will launch right behind GSLV-F11

Any info on rough date?

Offline zubenelgenubi

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #13 on: 12/18/2018 07:46 pm »
As per ground reports, PSLV will launch right behind GSLV-F11

Any info on rough date?

As GSAT-7A prepares to launch from the SLP, any sign of activity at the FLP towards assembling the PSLV inside for the EMIsat launch?
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Offline isro-watch

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Offline Steven Pietrobon

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #15 on: 12/30/2018 05:20 am »
The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline isro-watch

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #16 on: 12/30/2018 05:31 pm »
Thanks Steve...

Do we know the list of non-Indian satellites on this mission in Jan-2019

Offline russianhalo117

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #17 on: 12/30/2018 06:13 pm »
The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."
So PS4 is being turned into an Agena equivalent.

Offline isro-watch

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #18 on: 12/31/2018 04:30 pm »
As per sources, launch is expected on Jan-15-2019 (or in that week)
I will look out for official confirmation

Offline zubenelgenubi

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #19 on: 12/31/2018 09:41 pm »
The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."
So PS4 is being turned into an Agena equivalent.

Further from same article--solar power usage such as used by Progress in extended free-flight following its primary mission:
Quote
Dr. Sivan said the revived stage of the PSLV-C44 flight would be equipped with solar power systems to keep it working and monitored from ground.

And, re: RH's observation, I hope the next quote is a misunderstanding by the journalist, and not by Dr. Sivan:
Quote
ISRO Chairman K. Sivan said the trial with the expired fourth rocket stage would easily be the first of its kind by any space agency.
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Offline russianhalo117

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #20 on: 01/01/2019 01:09 am »
The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."
So PS4 is being turned into an Agena equivalent.

Further from same article--solar power usage such as used by Progress in extended free-flight following its primary mission:
Quote
Dr. Sivan said the revived stage of the PSLV-C44 flight would be equipped with solar power systems to keep it working and monitored from ground.

And, re: RH's observation, I hope the next quote is a misunderstanding by the journalist, and not by Dr. Sivan:
Quote
ISRO Chairman K. Sivan said the trial with the expired fourth rocket stage would easily be the first of its kind by any space agency.
And LCROSS (example scenario)should be added into the mix as an operating mode where PS4 stage is passive and attached payload takes over stage ops.

Offline isro-watch

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Offline Salo

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Re: EMIsat - PSLV C44 - NET January 2019
« Reply #22 on: 01/11/2019 07:51 pm »

From 53:20
PSLV C44 with Microsat-R payload will be in new 'PSLV-DL' configuration with only two strap-ons.
PSLV C45 will be with EMIsat and around 30 commercial payloads as rideshares.

Offline Salo

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Re: Microsat-R - PSLV DL C44 - mid January 2019
« Reply #23 on: 01/12/2019 07:44 am »
https://www.reddit.com/r/ISRO/comments/af2h7p/partial_pslvc44_microsatr_notam_is_out/
Quote
Partial PSLV-C44 / Microsat-R NOTAM is out. Enforcement duration 1730-2130 (UTC), 24 January 2019 to 26 January 2019

Source: https://pilotweb.nas.faa.gov/

Mapped zone 5,6

F0083/19 NOTAMN
Q) YMMM/QWMLW/IV/BO/W/000/999/1657S08034E999
A) YMMM
B) 1901241730 C) 1901262130
D) DAILY 1730/2130
E) FLW RECEIVED FROM GOVERNMENT OF INDIA:
PSLV C44 ROCKET LAUNCH FROM INDIA IS NOW SCHEDULED.
2 DANGER ZONES EFFECT YMMM:

ZONE 5 BOUNDED BY
0100N 08125E
0040N 08325E
0405S 08230E
0345S 08030E
TO BEGINNING

ZONE 6 BOUNDED BY
2415S 07445E
2500S 08000E
3400S 07800E
3500S 07500E
3700S 07145E
TO BEGINNING
F) SFC G) UNL

Offline zubenelgenubi

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Re: Microsat-R - PSLV-DL C44 - NET January 24, 2019
« Reply #24 on: 01/12/2019 09:29 am »
Is Microsat-R the sole payload on this launch?

If so, why?  Its mass is 150-200 kg.  That's well within the payload mass capacity to LEO or LPEO or SSO for a solid booster-less PSLV-CA?

Or, is the "missing mass" accounted for by the additional equipment on the PS4 fourth stage to enable its test extended mission?

Or is this primarily a test flight for this new version of PSLV?  And, ISRO is willing to accept a greater risk for this spacecraft as a payload on a test flight?

The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."
***

There is a new launch thread for EMIsat and company:
EMISAT & 30 microsats - PSLV C45 - February 2019
« Last Edit: 01/13/2019 06:44 am by zubenelgenubi »
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Offline ZachS09

Re: Microsat-R - PSLV DL C44 - mid January 2019
« Reply #25 on: 01/12/2019 02:50 pm »
Since PSLV-C44 will utilize the new PSLV-DL variant, will the S-12 boosters be used? Or will the S-9 boosters augment the first stage motor?
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Offline russianhalo117

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Re: Microsat-R - PSLV DL C44 - mid January 2019
« Reply #26 on: 01/12/2019 04:53 pm »
Since PSLV-C44 will utilize the new PSLV-DL variant, will the S-12 boosters be used? Or will the S-9 boosters augment the first stage motor?
It is not yet known.

Offline TheVarun

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #27 on: 01/12/2019 05:10 pm »
 This is actually the first time I'm hearing that the mission to test the orbiting fourth stage, is separate from the EMISAT launch. When were the EMISAT and Microsat missions made distinct, or when did the Microsat mission become scheduled before Emisat?

Offline Salo

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #28 on: 01/12/2019 07:29 pm »
https://www.thehindu.com/news/national/kerala/pslv-lift-off-with-added-features/article25981654.ece
Quote
PSLV lift-off with added features
Tiki Rajwi
Thiruvananthapuram, January 12, 2019 23:09 IST
Updated: January 12, 2019 23:09 IST

The upcoming mission will see a new variant of the PSLV in use

With the Indian Space Research Organisation (ISRO) planning to keep the fourth and final stage of the Polar Satellite Launch Vehicle (PSLV) ‘alive’ in space as a useful ‘orbital platform’, the rocket — popularly dubbed ISRO’s trusted workhorse — is getting added features.
Set for lift-off this month with the Microsat-R payload, the upcoming PSLV-C44 mission will see a new variant of the PSLV in use.
This variant, tagged PSLV-DL, will be the first to sport two strap-on boosters for providing added thrust.

Lithium-ion cells

Its final and fourth stage — PS4 — will be equipped with lithium-ion batteries, but no solar panels.
An in-house technology, the lithium-ion cells are critical to keep the spent stage in orbit. Solar panels will be added, in all likelihood, in the next mission, VSSC director S. Somanath says.
The ISRO had hit upon the idea of transforming the expendable fourth stage into a makeshift satellite to reduce space debris.
In normal scenario, the initial stages of the rocket, once they detach, drop back into the sea.
‘Recycling’
However, stage four, after releasing the payload, wanders around in space as junk.
If the ISRO plan is successful, the spent stage will be automatically ‘recycled’ into a valuable platform for space-based experiments.
The VSSC director said that the ISRO would perfect the technology with tests spread over multiple missions.
“We are doing it incrementally. In the PSLV-C44 mission, the platform will be demonstrated. “We have to show that the PS4 stage can be kept ‘alive’ for more than one orbit. After the regular payloads are injected into their orbits, we will shift the spent stage to another orbit and keep it there and demonstrate that it is live,” he said.
On the C44 mission, the ISRO will also test the downloading of data from the stage to the ground station. In subsequent missions, the space agency will carry out experiments using the platform.
A number of experiments are under consideration, though nothing has been finalised. The PSLV, which first flew successfully in 1994, has evolved over the years.
Of the current configurations in use, PSLV-XL employs six strap-on boosters while the ‘core alone’ has none.

Twin boosters

On the new ‘DL’ type, the twin boosters will burn at lift-off to give additional thrust to the rocket. The boosters will carry 12 tonnes of propellant.
In all other respects, the 44-metre-tall PSLV will have standard features.
« Last Edit: 01/12/2019 07:38 pm by Salo »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #29 on: 01/12/2019 10:25 pm »
Since PSLV-C44 will utilize the new PSLV-DL variant, will the S-12 boosters be used? Or will the S-9 boosters augment the first stage motor?
It is not yet known.

Is the S-9 still available?

Quote
The generic version with six strap-ons will be discontinued in future. This would certainly make production of PSLV commercially viable as only one type of strap-on, viz., the XL version needs to be produced.
https://www.isro.gov.in/pslv-c25-mars-orbiter-mission/fishing-hamlet-to-red-planet-download-e-book
« Last Edit: 01/12/2019 10:34 pm by Stan Black »

Offline K210

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #30 on: 01/12/2019 11:39 pm »
To clear up any confusion the two strap ons used will be S12's (used on PSLV-XL).

Quote
On the new ‘DL’ type, the twin boosters will burn at lift-off to give additional thrust to the rocket. The boosters will carry 12 tonnes of propellant.

Source: https://www.thehindu.com/news/national/kerala/pslv-lift-off-with-added-features/article25981654.ece

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Re: Microsat-R - PSLV DL C44 - mid January 2019
« Reply #31 on: 01/12/2019 11:53 pm »
Since PSLV-C44 will utilize the new PSLV-DL variant, will the S-12 boosters be used? Or will the S-9 boosters augment the first stage motor?

The article above says "The boosters will carry 12 tonnes of propellant." so that would imply S-12.

Is the S-9 still available?

I believe so. They were last used on 26 September 2016 on C35 and five years prior to that on 20 April 2011 on C11.
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Offline zubenelgenubi

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #32 on: 01/13/2019 06:49 am »
This is actually the first time I'm hearing that the mission to test the orbiting fourth stage, is separate from the EMISAT launch. When were the EMISAT and Microsat missions made distinct, or when did the Microsat mission become scheduled before Emisat?

The first reference that I read was up-thread:
https://www.thehindu.com/sci-tech/science/isro-readies-for-a-busy-2019/article25861196.ece
The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."

Personally, I didn't realize at that time that Microsat-R was REPLACING EMIsat on C44.
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Offline russianhalo117

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #33 on: 01/14/2019 05:49 am »
This is actually the first time I'm hearing that the mission to test the orbiting fourth stage, is separate from the EMISAT launch. When were the EMISAT and Microsat missions made distinct, or when did the Microsat mission become scheduled before Emisat?

The first reference that I read was up-thread:
https://www.thehindu.com/sci-tech/science/isro-readies-for-a-busy-2019/article25861196.ece
The relevant paragraph.

"The new year’s very first mission is set for January and will try out a unique experiment to re-control and rework the fourth and last stage of the PSLV-C44 rocket after it completes its job in space. C-44 is slated to carry the 150/200-kg special purpose Microsat-R to a low-Earth polar orbit."

Personally, I didn't realize at that time that Microsat-R was REPLACING EMIsat on C44.
Payload delays is likely reason for the swap.

Offline PM3

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #34 on: 01/14/2019 12:13 pm »
rocketlaunch.live today reports a launch time of 24 January, 18:06 UTC

https://www.rocketlaunch.live/launch/microsat-r
« Last Edit: 01/14/2019 12:15 pm by PM3 »

Offline input~2

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #35 on: 01/14/2019 08:40 pm »
Microsat-R reached SHAR on January 13 in the evening

source: https://www.sakshi.com/news/national/microsat-r-satellite-reached-shar-1152090
« Last Edit: 01/14/2019 08:42 pm by input~2 »

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Re: Microsat-R - PSLV DL C44 - January 24 2019 (18:08 UTC)
« Reply #36 on: 01/14/2019 08:45 pm »
Launch time indicated as 11:38 pm local time (18:08 UTC)

source: http://www.andhrabhoomi.net/content/ap-12355

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #37 on: 01/14/2019 09:41 pm »
Since PSLV-C44 will utilize the new PSLV-DL variant, will the S-12 boosters be used? Or will the S-9 boosters augment the first stage motor?

The article above says "The boosters will carry 12 tonnes of propellant." so that would imply S-12.

Is the S-9 still available?

I believe so. They were last used on 26 September 2016 on C35 and five years prior to that on 20 April 2011 on C11.

Both in 2014 and 2016 ’Outcome Budget’:-
Quote
Currently, two versions of PSLV are operational, namely PSLV-XL (with six extended version of Strap-on motors) and the PSLV Core- alone (without Strap-on motors).
https://www.isro.gov.in/sites/default/files/article-files/node/7064/outcomebudget2016-2017.pdf

Also C35 there was two brochures published. It was first listed as an XL.
http://www.isro.gov.in/sites/default/files/pslv-c35_finalbrochure.pdf
http://www.isro.gov.in/sites/default/files/flipping_book/PSLV_C35_5/files/assets/common/downloads/PSLV-C35%20Brochure.pdf

Offline isro-watch

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #38 on: 01/15/2019 12:39 am »
http://www.andhrabhoomi.net/content/ap-12355

Translation in Brief: PSLV-C44 launch has been scheduled on Jan-24-2019. The satellite to be launched, Microsat-R arrived on Sunday from Bangalore via road with heavy security. With Chandrayaan-2 postponed to April, this is the only launch for the month of January and ISRO officials have sped up efforts. All four stages of the rocket have already been stacked and satellite activities are to begin from Monday(14-Jan-2019). Made with complete indigenous technology, the satellite will be used in Earth Observation. According to ISRO officials, the launch is expected to take place at 11:38 pm local time late in the night.

edit by mod: see reply#37 above
« Last Edit: 01/15/2019 07:45 pm by input~2 »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #39 on: 01/15/2019 12:20 pm »
 It's hard to believe that the only satellite on board PSLV C-44 weighs between 150-250kg. There's got to be more! Unless of course, that the fourth stage itself is the other payload. Otherwise, that's the smallest satellite ever lifted by the PSLV.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #40 on: 01/16/2019 05:55 am »
The lowest ever payload PSLV has so far launched into orbit was 295 kg of TechSar on 21 January, 2008 with the Core alone version. I don't understand why ISRO is not using Core Alone Version when the payload was so low and whether other payloads are available is not known. Both Emisat and Microsat-R and even Cartosat could have been launched together, thus leveraging PSLV-XL's launch capacity of over 1800 kg. I think, it is wastage of such a launch vehicle by launching PSLV with low payload.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #41 on: 01/16/2019 12:33 pm »
Launch kit out

Quote
PSLV-C44 is the first mission of PSLV-DL and is a new variant of PSLV.


Quote
In PSLV-C44, the fourth stage (PS4) of the vehicle will be moved to higher circular orbit so as to establish an orbital platform for carrying out experiments. Kalamsat, a student payload will be the first to use PS4 as orbital platform.

Quote
PSLV-C44 will also carry Microsat-R, an imaging satellite

Offline ZachS09

Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #42 on: 01/17/2019 02:17 am »
The lowest ever payload PSLV has so far launched into orbit was 295 kg of TechSar on 21 January, 2008 with the Core alone version. I don't understand why ISRO is not using Core Alone Version when the payload was so low and whether other payloads are available is not known. Both Emisat and Microsat-R and even Cartosat could have been launched together, thus leveraging PSLV-XL's launch capacity of over 1800 kg. I think, it is wastage of such a launch vehicle by launching PSLV with low payload.

I think the reason why ISRO's going with the DL version is because it hasn't been tested yet. It's only the third vehicle that has only two boosters. The other two were the ASLV (which was flown way back when) and the GSLV Mk.3 (which is ISRO's biggest indigenous rocket).

It would make sense to use the CA variant since the payload mass is so light, but if ISRO wants to attach boosters on the first stage, I do not blame them.
Because the Falcon Heavy Test Flight was successful, it has inspired thousands of people to consider changing the future of space travel.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #43 on: 01/17/2019 03:47 am »
The lowest ever payload PSLV has so far launched into orbit was 295 kg of TechSar on 21 January, 2008 with the Core alone version. I don't understand why ISRO is not using Core Alone Version when the payload was so low and whether other payloads are available is not known. Both Emisat and Microsat-R and even Cartosat could have been launched together, thus leveraging PSLV-XL's launch capacity of over 1800 kg. I think, it is wastage of such a launch vehicle by launching PSLV with low payload.

I think the reason why ISRO's going with the DL version is because it hasn't been tested yet. It's only the third vehicle that has only two boosters. The other two were the ASLV (which was flown way back when) and the GSLV Mk.3 (which is ISRO's biggest indigenous rocket).

It would make sense to use the CA variant since the payload mass is so light, but if ISRO wants to attach boosters on the first stage, I do not blame them.
I think it is due to the PS4 final orbit in addition to version first flight. They are transitioning PSLV family to provide a Vulcan like offering of 0, 2, 4, 6 SRMs. There is also a push to standarize the first two stages of PSLV and GSLV Mk-2 so we could end up with an Ariane-4 family architecture for Strapon boosters.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #44 on: 01/17/2019 11:10 pm »
Mass of Microsat-R has been revised upwards to 700 kg. User is DRDO (Defence Research and Development Organisation) so that explains the secrecy around this launch.

Quote
“We will be launching 700-kg Microsat-R and Kalamsat with a new variant of Polar Satellite Launch Vehicle (PSLV). In order to reduce the weight and increase the mass, an aluminum tank is used for the first time in the fourth stage,” K. Sivan, Chairman of Indian Space Research Organisation (ISRO), told IANS on Thursday.

Source: http://www.easternmirrornagaland.com/isro-opens-new-year-launching-satellite-for-drdo-and-a-student-satellite/

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #45 on: 01/18/2019 01:47 pm »
That is no trivial alteration!  Now, the launch and its configuration make a lot more sense to the lay viewer. The first impression was that because they are trying out something new with the orbital fourth stage and two strap-ons, the satellite weight was kept down.  Nice, looking forward to the launch next Thursday.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #46 on: 01/18/2019 01:50 pm »
PSLV-C44 Fourth stage PS-4 as orbital platform for experiments-said to be first of it's kind in world.

(ISRO chairman press conference highlights
https://www.chetansindiaspaceflight.com/2019/01/news-update-isro-chairman-press.html)

Online Stan Black

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #47 on: 01/20/2019 11:34 am »
To clear up any confusion the two strap ons used will be S12's (used on PSLV-XL).

Quote
On the new ‘DL’ type, the twin boosters will burn at lift-off to give additional thrust to the rocket. The boosters will carry 12 tonnes of propellant.

Source: https://www.thehindu.com/news/national/kerala/pslv-lift-off-with-added-features/article25981654.ece

Does one have SITVC?
https://www.isro.gov.in/sites/default/files/galleries/%20PSLV-C44%20Gallery/06hoistingofoneofthestrap-onsofpslv-c44duringvehicleintegration.jpg

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #48 on: 01/20/2019 01:42 pm »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #50 on: 01/20/2019 01:51 pm »

Offline A.K.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #51 on: 01/20/2019 02:16 pm »
Pardon me I'm a noob, I'm sometimes wonder if they paint redoxide on PSLV stages, it looks red.

Offline jcm

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #52 on: 01/20/2019 04:14 pm »
A protototype of Kalamsat was launched on a NASA RockSat sounding rocket mission, NASA 41.121UO Terrier Improved Orion, from Wallops in 2017 Jun. https://www.paisawapas.com/student-stories/satellite-by-nasa-designed-by-an-indian-teen-kalamsat-weighs-64grams-worlds-lightest-satellite/
and http://www.spacekidzindia.com/proud-moment.html
It is a 0.064 kg, 0.038m-cube femtosat, so kind of underusing the PS4's capabilities!
I think this launch needs to be regarded as mainly a launch vehicle test flight and test of the PS4 bus systems.
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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #53 on: 01/20/2019 09:59 pm »
With an orbital altitude of 274 km that is essentially half of the Cartosat 2S equivalent, and a stated launch mass of 714 kg which is similar to that of earlier Cartosat 2S birds for Microsat-R (hardly a 'microsat', and R - Reconaissance/Radar?), one possibility could be that they are attempting to use Cartosat-2S hardware at a much lower orbital altitude (and with a shorter orbit life if not for frequent propping up) to capture very high resolution images for strategic purposes than were possible with other satellites in the series flying at over 500km.
« Last Edit: 01/20/2019 10:04 pm by vineethgk »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #54 on: 01/21/2019 09:02 am »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #55 on: 01/22/2019 12:26 pm »
Brochure screenshots + PDF attached

Source: https://www.isro.gov.in/pslv-c44/pslv-c44-launch-brochure


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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #56 on: 01/23/2019 11:09 am »
PSLV-C44 ready to launch Microsat-R and Kalamsat

edited version of https://www.isro.gov.in/pslv-c44/pslv-c44-curtain-raiser-video-english

Offline starbase

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #57 on: 01/23/2019 11:58 am »
Complete curtain raiser video (incl. cheesy background music after intro):

« Last Edit: 01/23/2019 11:59 am by starbase »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #59 on: 01/23/2019 08:43 pm »
The countdown for the launch of PSLV-C44 mission started today at 19:37 Hrs (IST) from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. The launch is scheduled at 23:37 Hrs IST on 24th January 2019

Source :
https://www.isro.gov.in/update/23-jan-2019/countdown-launch-of-pslv-c44-mission-started-today-1937-hrs-ist-satish-dhawan

https://twitter.com/isro/status/1088100436178018304?p=v

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #60 on: 01/24/2019 07:44 am »
The Folowwng report from the Hindu puts the Microsat-R satellite weight at 740 kg

ISRO's first mission of 2019 to put Microsat-R in space

Quote
Just before midnight on Thursday, Indian Space Research Organisation's first mission of 2019 will put into space a 740-kg military imaging satellite, Microsat-R. ISRO has shied away from sharing details of the spacecraft or its uses as it does routinely each time during its missions; except to say the satellite would be placed within 15 minutes after take-off in a polar orbit 274 km away from Earth. This is much lower than any of its civil Earth observation spacecraft, which fly pole to pole over the globe at between 400 km and 700 km.

Quote
According to information obtained from different sources Microsat-R and its payload come assembled from a handful of laboratories of the Defence Research and Development Organisation [/b](DRDO) and is meant for military use. The satellite was "assembled outside and ISRO only interfaced it" with its own systems and the launch vehicle, just as it treats any customer satellite.

For its part, ISRO is experimenting on two aspects of the vehicle. One is to reuse a waste stage. "For us, the excitement is about reusing the spent fourth stage [PS4] of the rocket as an orbiting platform for future experiments," an official said. Kalamsat, a small student payload, will be the first to use PS4 as an orbital platform. For the third time in ISRO's recent history, the mission team is slated to cut off and restart the PS4 engine twice over a flight lasting around 100 minutes.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #61 on: 01/24/2019 07:49 am »
Quote
Kalamsat v2 is a 10 cm cube satellite weighing 1200 grams. [..] It uses a modified new kind of electronic systems and buses which makes use of commercially off the shelf components to make the space exploration easier and economical. We will be testing the performances of these newly modified systems like OBC, eps, communication, and structure.

https://www.spacekidzindia.in/launch-of-pslv-c-44-kalamsat-v2/

Offline worldtimedate

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #62 on: 01/24/2019 08:15 am »
Quote
"The fourth stage will be moved to a higher circular orbit so as to establish an orbital platform for carrying out experiments," Vikram Sarabhai Space Centre (VSSC) director S Somnath told TOI. The indigenous lithium-ion technology is crucial to keep the fourth stage live for re-use, he said. Normally, after PSLV launch, its various stages of strap-ons is a waste that drops down into sea or ocean. In this rocket, the fourth stage will be automatically reused as a platform for the launch of a student experimental satellite in the name of Abdul Kalam to carry out scientific studies in another orbit, Isro scientists said.

Quote
Called Kalamsat, this student payload developed by Chennai based organisation 'Space KIdz India’ will be the first to use PS4 as the orbital platform, the scientist said. In this, the fourth stage energy support is lithium ion technology, further in the next launch solar panels are planned to be used, the scientists said.

Source : Isro's PSLV-C44 to lift off imaging satellite on Thursday

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #63 on: 01/24/2019 08:51 am »
Following are the links for the launch webcast of PSLV DL C44 Mission :

Doordarshan National youtube live stream
https://www.youtube.com/c/DoordarshanNational/live

ISRO Official Stream 1
http://cdn.24fd.com/e19/01/isro/24/index.html

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #64 on: 01/24/2019 08:59 am »
PSLV-C44 Mission - Propellants filling of fourth stage (PS4) of PSLV-C44 completed
https://www.isro.gov.in/update/24-jan-2019/pslv-c44-mission-propellants-filling-of-fourth-stage-ps4-of-pslv-c44-completed

PSLV-C44 Mission - Filling of oxidizer (N204) for the second stage (PS2) completed
https://www.isro.gov.in/update/24-jan-2019/pslv-c44-mission-filling-of-oxidizer-n204-second-stage-ps2-completed

PSLV-C44 Mission - Filling of propellant UH25 for second stage (PS2) of PSLV-C44 commenced.
https://www.isro.gov.in/update/24-jan-2019/pslv-c44-mission-filling-of-propellant-uh25-second-stage-ps2-of-pslv-c44


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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #65 on: 01/24/2019 09:03 am »
PSLV-C44 will ve the 46th flight of PSLV and the overall 70th launch from the SDSC.
PSLV-C44 is the first mission of PSLV-DL and is a new variant of PSLV.


https://twitter.com/isro/status/1088362919375527939?p=v
« Last Edit: 01/24/2019 09:12 am by worldtimedate »

Offline Steven Pietrobon

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #66 on: 01/24/2019 10:35 am »
Called Kalamsat, this student payload developed by Chennai based organisation 'Space KIdz India’ will be the first to use PS4 as the orbital platform, the scientist said. In this, the fourth stage energy support is lithium ion technology, further in the next launch solar panels are planned to be used, the scientists said.

Source : Isro's PSLV-C44 to lift off imaging satellite on Thursday

According to the PSLV-C44 launch brochure, the lifetime of PS4 in orbit is 54,000 seconds or 15 hours.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #67 on: 01/24/2019 11:55 am »
A first for BBC reporting on an Indian Space launch -
https://www.bbc.com/news/world-asia-india-46956595

No mention of poverty.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #68 on: 01/24/2019 12:03 pm »
The Folowwng report from the Hindu puts the Microsat-R satellite weight at 740 kg

ISRO's first mission of 2019 to put Microsat-R in space

Quote
Just before midnight on Thursday, Indian Space Research Organisation's first mission of 2019 will put into space a 740-kg military imaging satellite, Microsat-R. ISRO has shied away from sharing details of the spacecraft or its uses as it does routinely each time during its missions; except to say the satellite would be placed within 15 minutes after take-off in a polar orbit 274 km away from Earth. This is much lower than any of its civil Earth observation spacecraft, which fly pole to pole over the globe at between 400 km and 700 km.

Quote
According to information obtained from different sources Microsat-R and its payload come assembled from a handful of laboratories of the Defence Research and Development Organisation [/b](DRDO) and is meant for military use. The satellite was "assembled outside and ISRO only interfaced it" with its own systems and the launch vehicle, just as it treats any customer satellite.

For its part, ISRO is experimenting on two aspects of the vehicle. One is to reuse a waste stage. "For us, the excitement is about reusing the spent fourth stage [PS4] of the rocket as an orbiting platform for future experiments," an official said. Kalamsat, a small student payload, will be the first to use PS4 as an orbital platform. For the third time in ISRO's recent history, the mission team is slated to cut off and restart the PS4 engine twice over a flight lasting around 100 minutes.

With every report the weight of this satellite seems to be revised upwards.

Online Chris Bergin

Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #69 on: 01/24/2019 01:09 pm »

Offline TheVarun

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #70 on: 01/24/2019 01:59 pm »
 A few 'firsts' for this mission. The lightest satellite( Kalamsat) launched by the PSLV; the first time ISRO is launching an Indian private company's/organisation's satellite(SpaceKidz); first DRDO satellite to be launched; lowest orbit of any Indian satellite; and of course first use of fourth stage of vehicle, as an orbiting platform( certainly by ISRO/India, if not by any space agency)

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #71 on: 01/24/2019 02:52 pm »
A few 'firsts' for this mission. The lightest satellite( Kalamsat) launched by the PSLV; the first time ISRO is launching an Indian private company's/organisation's satellite(SpaceKidz); first DRDO satellite to be launched; lowest orbit of any Indian satellite; and of course first use of fourth stage of vehicle, as an orbiting platform( certainly by ISRO/India, if not by any space agency)
+ 2 strapons only for the LV.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #72 on: 01/24/2019 02:55 pm »
Alternate YouTube link (Doordarshan has nothing scheduled yet):


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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #73 on: 01/24/2019 04:28 pm »
Now on Doordarshan


Offline Steven Pietrobon

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #74 on: 01/24/2019 04:38 pm »
Coverage has started.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Chris Bergin

Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #75 on: 01/24/2019 04:41 pm »

Offline Steven Pietrobon

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #76 on: 01/24/2019 04:42 pm »
Welcome!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #77 on: 01/24/2019 04:43 pm »
T-25 minutes. Microsat-R is 744 kg.
« Last Edit: 01/24/2019 04:44 pm by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #78 on: 01/24/2019 04:47 pm »
T-20 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #79 on: 01/24/2019 04:51 pm »
First view of the satellite.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #80 on: 01/24/2019 04:53 pm »
T-15 minutes. Key has been turned. Automated launch sequence has been authorised.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #81 on: 01/24/2019 04:55 pm »
T-12 minutes. Showing PSLV video.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #82 on: 01/24/2019 04:57 pm »
T-10 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #83 on: 01/24/2019 04:59 pm »
T-9 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #84 on: 01/24/2019 05:00 pm »
T-8 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #85 on: 01/24/2019 05:01 pm »
T-7 minutes. 4-6 m/s groundspeed.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #86 on: 01/24/2019 05:02 pm »
T-6 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #87 on: 01/24/2019 05:03 pm »
T-5 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #88 on: 01/24/2019 05:04 pm »
T-4 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #89 on: 01/24/2019 05:05 pm »
T-3 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #90 on: 01/24/2019 05:06 pm »
T-2 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #91 on: 01/24/2019 05:07 pm »
T-1 minute.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #92 on: 01/24/2019 05:08 pm »
Liftoff!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.


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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #94 on: 01/24/2019 05:09 pm »
T+1 minute.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #95 on: 01/24/2019 05:10 pm »
First stage separation.

T+2 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #96 on: 01/24/2019 05:11 pm »
Fairing separation.

T+3 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #97 on: 01/24/2019 05:12 pm »
T+4 minutes.

Second stage separation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #98 on: 01/24/2019 05:13 pm »
T+5 minutes. 120 km altitude.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #99 on: 01/24/2019 05:14 pm »
T+6 minutes. PS3 burnout.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #100 on: 01/24/2019 05:15 pm »
T+7 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #101 on: 01/24/2019 05:16 pm »
T+8 minutes.

PS3 separation.

PS4 ignition.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #102 on: 01/24/2019 05:17 pm »
T+9 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #103 on: 01/24/2019 05:18 pm »
T+10 minutes. Performance nominal.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #104 on: 01/24/2019 05:19 pm »
T+11 minutes. Waiting for Rodriguez AOS.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #105 on: 01/24/2019 05:20 pm »
T+12 minutes. AOS. Performance normal.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #106 on: 01/24/2019 05:21 pm »
T+13 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #107 on: 01/24/2019 05:21 pm »
Microsat-R separation!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #108 on: 01/24/2019 05:23 pm »
Handshakes going around. I believe Kalamsat won't be separating, so having speeches now.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Chris Bergin

Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #109 on: 01/24/2019 05:24 pm »
William's article updated to where we are.

https://www.nasaspaceflight.com/2019/01/pslv-launch-debut-orbital-platform-fourth-stage/

Thanks again to Steven for the excellent coverage!

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #110 on: 01/24/2019 05:25 pm »
ISRO Chairman and Department of Space Secretary. Announcing mission success and new aspects of mission.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #111 on: 01/24/2019 05:27 pm »
Kalamsat students. "Will be holding ISRO's hands in future."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #112 on: 01/24/2019 05:28 pm »
What happened to KalamSat?

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #113 on: 01/24/2019 05:33 pm »
Mission Director. Will be future Gaganyaan director of new Human Spaceflight Centre. Orbit within 0.79 km of target. Solar arrays of Microsat-R have deployed.

A.K., Kalamsat has been but in orbit. I believe that it is not separating from PS4.
« Last Edit: 01/24/2019 05:36 pm by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #114 on: 01/24/2019 05:36 pm »
What happened to KalamSat?

Quote
ISRO Chairman K.Sivan said the PS4-Kalamsat experiment would be short-lived. It would start about 1.5 hours from take-off and last about 14 hours until Friday midday. Later experiments with PS4 will be improved gradually, he said.

For the third time in ISRO’s recent history, the mission team is slated to cut off and restart the PS4 engine twice over a flight lasting around 100 minutes.

Source : ISRO's first mission of 2019 to put Microsat-R in space

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #115 on: 01/24/2019 05:41 pm »
GSAT 31 next, 6 February (Indian time) by Arianespace.

SSLV.

Landing Test demonstration.

Chandrayaan 2. Sometime in April.

32 missions this year in planning.

Gaganyaan highest priority. Happen by December 2021.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #116 on: 01/24/2019 05:42 pm »
Wrapping up coverage.
« Last Edit: 01/24/2019 05:43 pm by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #117 on: 01/24/2019 05:44 pm »
End of coverage. Congratulations to ISRO for the successful launch!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline SciNews

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #118 on: 01/24/2019 05:45 pm »
Launch and satellite separation with correct aspect ratio

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #119 on: 01/24/2019 08:09 pm »
T+11 minutes. Waiting for Rodriguez AOS.
This TT&C  antenna is located on Rodrigues island, a territory of Mauritius

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #120 on: 01/24/2019 08:25 pm »
T+11 minutes. Waiting for Rodriguez AOS.
This TT&C  antenna is located on Rodrigues island, a territory of Mauritius

From the Portuguese explorer Diogo Rodrigues.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #121 on: 01/24/2019 08:38 pm »
« Last Edit: 01/24/2019 08:39 pm by K210 »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #122 on: 01/24/2019 09:50 pm »
Launch photos from ISRO:
---
SMS ;-).

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #123 on: 01/25/2019 02:25 am »
 When can we reasonably expect to see confirmation that the Kalamsat aboard the PSLV 4th stage is giving signals, and that the concept of orbiting last stage has been successful?  Eagerly awaiting news on this!

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #124 on: 01/25/2019 06:57 am »
2 objects cataloged:

2019-006A/43947 in 264 x 279 km x 96.45°  epoch: Jan 24, 20:50 UTC
2019-006B/43948 in 447 x 451 km x 98.80°  epoch: Jan 25, 05:54 UTC
« Last Edit: 01/25/2019 06:59 am by input~2 »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #125 on: 01/25/2019 09:18 am »

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #126 on: 01/25/2019 02:27 pm »
A first for BBC reporting on an Indian Space launch -
https://www.bbc.com/news/world-asia-india-46956595

No mention of poverty.

thats because the author is mr. pallav bagla. i think he is NDTV science news editor/ reporter. he usually asks silly questions to scientists and astronauts (please check some of his interviews of them in "indian human spaceflight" section).

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #127 on: 01/25/2019 02:37 pm »
PSLV-C44 launch some known and unknown things... :'(

My doubts:

1. when does PS-4 stage become useless? TOI report says 'in 6 months'...but how? battery power or solar energy (as suggested by TOI report, does a rocket stage really have solar panels?)?
2. some reports say that Kalamsat is powered by PS-4 batteries but the cubesat is said to have life of only 15 hours, so which one is true... 6 months or 15 hours?
3. does a 1.2 kg cubesat really have "solar panels" as TOI reports? if that is true...why will it remain operational for only 15 hours?
4. how can TOI report claim that, this is a "technology that can eventually reduce space debris"?

(https://www.chetansindiaspaceflight.com/2019/01/news-update-pslv-c44-launch-successful.html)

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #128 on: 01/26/2019 01:25 am »
There are no solar panels on PS4 for this flight. After 15 hours the batteries will run out, as stated in the mission brochure. Kalamsat V2 has solar panels, so as long as it has sunlight, it should keep operating. See

https://www.bbc.com/news/world-asia-india-46956595

I believe the idea is that eventually PS4 will have solar panels, so that its life can be extended.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #129 on: 01/26/2019 03:00 am »
There are no solar panels on PS4 for this flight. After 15 hours the batteries will run out, as stated in the mission brochure. Kalamsat V2 has solar panels, so as long as it has sunlight, it should keep operating. See

https://www.bbc.com/news/world-asia-india-46956595

I believe the idea is that eventually PS4 will have solar panels, so that its life can be extended.

That explains a lot, thank you.

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #130 on: 01/26/2019 05:16 am »
A first for BBC reporting on an Indian Space launch -
https://www.bbc.com/news/world-asia-india-46956595

No mention of poverty.

thats because the author is mr. pallav bagla. i think he is NDTV science news editor/ reporter. he usually asks silly questions to scientists and astronauts (please check some of his interviews of them in "indian human spaceflight" section).

Mr Bahagla again with articles full of jingoism and less on science.

 ;D ;D ;D
10, 9, ignition sequence start 6, 5, 4, 3, 2, 1, 0, all engines running Lift off, we have a lift off, lift off

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #131 on: 01/26/2019 08:34 am »
A first for BBC reporting on an Indian Space launch -
https://www.bbc.com/news/world-asia-india-46956595

No mention of poverty.

thats because the author is mr. pallav bagla. i think he is NDTV science news editor/ reporter. he usually asks silly questions to scientists and astronauts (please check some of his interviews of them in "indian human spaceflight" section).

Mr Bahagla again with articles full of jingoism and less on science.

 ;D ;D ;D

Sadly its true! We need somebody like mr. Jules Bergman

Offline otisbow

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Re: Microsat-R - PSLV DL C44 - January 24 2019
« Reply #132 on: 01/26/2019 11:04 pm »
A Blast for the Past...Bergman was Mr. Space on ABC News!!!

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