Author Topic: HySIS & 30 foreign small sats - PSLV C43- FLP - November 29, 2018 (04:27 UTC)  (Read 45718 times)

Offline input~2

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A potential payload for PSLV C42 is SSTL-S1, a 450 kg Earth observation satellite  manufatured and owned by SSTL for Chinese private company 21AT Co. Ltd (via reddit)

http://www.satnews.com/story.php?number=1952793509
https://www.ecns.cn/2018/02-09/292099.shtml

Quote
The satellite will be launched on the Indian Space Research Organisation's Polar rocket in August.
« Last Edit: 11/29/2018 07:14 am by input~2 »

Offline Steven Pietrobon

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

Online ZachS09

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I would not be surprised if ISRO decides at the last minute to launch a Cartosat 2G instead of Cartosat 3.
« Last Edit: 06/17/2018 02:44 am by ZachS09 »
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Offline Steven Pietrobon

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According to isros own manifest however both cartosat-3 and oceansat-3 wont be ready till october/november so unless those satelites are ready ahead of time i dont think it will be them either.

Do you have a link for the ISRO manifest? I couldn't find it on the ISRO website. This page only lists GSAT 11, Chandrayaan-2 and GSAT 29.

https://www.isro.gov.in/missions
« Last Edit: 06/18/2018 07:15 am by Steven Pietrobon »
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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Looks like Centauri I from Fleet is flying on this mission.

http://www.manmonthly.com.au/news/fleet-space-technologies-unveils-launch-partners-first-nanosatellite-launches/

Australian Internet of Things (IoT) startup, Fleet Space Technologies, has today announced launch plans for its first two nanosatellites, Centauri I and II, in 2018.

Fleet Space Technologies has announced that the first of its nanosatellites is under contract to launch with Spaceflight aboard an Indian Polar Satellite Launch Vehicle (PSLV) by Antrix/ISRO. This satellite will establish a global network that will connect the world’s sensors and devices, for free. Just one satellite has the ability to cover 90% of the Earth.
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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Thanks K210! Perhaps the ISRO payload is EMISAT, which was scheduled to be available in the first quarter of 2018.

http://space.skyrocket.de/doc_sdat/emisat.htm
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Space Lizard

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Thanks K210! Perhaps the ISRO payload is EMISAT, which was scheduled to be available in the first quarter of 2018.

http://space.skyrocket.de/doc_sdat/emisat.htm
At about 400 kg, that still falls short of the 800-1000 kg description.
I watch rockets

Offline input~2

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Crossposting:
Quote
As the Commission is aware, BlackSky is under a tight timetable to ship its
Global-1 satellite on July 15, 2018, for a September launch.

Global-1 is on a PSLV flight.
Does this mean that PSLV C42 launch date is pushed to the right into September?

Offline Steven Pietrobon

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Presumably. Strange that ISRO hasn't listed this mission on their website.

https://www.isro.gov.in/missions
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline input~2

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Re: HySIS & 30 foreign small sats - PSLV C43 - October 2018
« Reply #9 on: 08/12/2018 01:19 pm »
The "ISRO EO sat" will be HySIS, Hyperspectral Imaging Satellite
source
and 30 foreign commercial co-passengers will be onboard

Offline zubenelgenubi

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Re: HySIS & 30 foreign small sats - PSLV C43 - October 2018
« Reply #10 on: 08/15/2018 03:47 pm »
What version of PSLV will this launch use?
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Online ZachS09

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Re: HySIS & 30 foreign small sats - PSLV C43 - October 2018
« Reply #11 on: 08/15/2018 04:46 pm »
What version of PSLV will this launch use?

Probably PSLV-XL.
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Offline russianhalo117

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Re: HySIS & 30 foreign small sats - PSLV C43 - October 2018
« Reply #12 on: 08/15/2018 07:05 pm »
What version of PSLV will this launch use?

Probably PSLV-XL.
Yes.

Offline worldtimedate

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Re: HySIS & 30 foreign small sats - PSLV C43 - October 2018
« Reply #13 on: 08/18/2018 05:06 am »
ISRO to develop full-fledged hyperspectral imaging satellite

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A new set of future satellites called hyperspectral imaging satellites is set to add teeth to the way India is gleaned from about 600 km in space. The Indian Space Research Organisation (ISRO) says it plans to launch a full-fledged niche Earth observation (EO) satellite - called the Hyperspectral Imaging Satellite or HySIS - using a critical chip it has developed.

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About a decade ago, ISRO added another EO niche with microwave or radar imaging satellites RISAT-1 and 2 that could 'see' through clouds and the dark - an important feature useful for the military and security agencies.

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'Hyspex' imaging is said to enable distinct identification of objects, materials or processes on Earth by reading the spectrum for each pixel of a scene from space. The payloads development centre, Space Applications Centre, Ahmedabad, designed the architecture of the chip which was made at ISRO's electronics arm, the Semi-Conductor Laboratory, Chandigarh. The result was a detector array that could read 1000 x 66 pixels.

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ISRO first tried it out in an 83-kg IMS-1 experimental satellite in May 2008. The same year, a hyperspectral camera was put on Chandrayaan-1 and used to map lunar mineral resources. Very few space agencies have such a satellite; a German environmental satellite called EnMAP is due to be launched on an Indian booster in 2018.

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Offline worldtimedate

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Re: HySIS & 30 foreign small sats - PSLV C43 - November 2018
« Reply #14 on: 09/02/2018 11:21 pm »
A slew of satellites are expected to be launched by ISRO after a dull year of launch mission.

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In October itself, another launch of PSLV C43 is scheduled that will carry HySIS or hyperspectral imaging satellite. The satellite is set to add teeth to the way India is gleaned from 630 km altitude as it will enable the country to see in 55 spectral or colour bands.

Source : Isro to launch 19 missions in just 7 months

Offline zubenelgenubi

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Re: HySIS & 30 foreign small sats - PSLV C43 - October 2018
« Reply #15 on: 09/17/2018 07:36 pm »
What version of PSLV will this launch use?

Probably PSLV-XL.
Yes.
I see that Gunter has changed his LV assignment for PSLV C43 to the PSLV-CA version.

Am I right to deduce that this is because the primary payload, HySIS, is using the SSB-2 microsatellite bus?  And, even 30 more secondary passengers would not overfill the PSLV-CA payload mass limits to a SSO?

(SARAL also used this satellite bus and was launched to a similar polar orbit, with secondary payloads.  SARAL massed only 346 kg.)
« Last Edit: 09/17/2018 07:36 pm by zubenelgenubi »
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Offline Skyrocket

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Re: HySIS & 30 foreign small sats - PSLV C43 - November 2018
« Reply #16 on: 09/17/2018 08:11 pm »
What version of PSLV will this launch use?

Probably PSLV-XL.
Yes.
I see that Gunter has changed his LV assignment for PSLV C43 to the PSLV-CA version.

Am I right to deduce that this is because the primary payload, HySIS, is using the SSB-2 microsatellite bus?  And, even 30 more secondary passengers would not overfill the PSLV-CA payload mass limits to a SSO?

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

Exactly - the small mass of all payloads is a very strong hint, that the CA version will be used.

Offline input~2

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Re: HySIS & 30 foreign small sats - PSLV C43 - November 2018
« Reply #17 on: 10/03/2018 07:02 am »
Launch date has slipped to mid november according to the reaktor hello world cubesat website (one of the payloads on C43).

Source: https://reaktorspace.com/reaktor-hello-world/
The countdown on that page points to a launch time of November 22, 8am (Helsinki local time)

Offline zubenelgenubi

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Re: HySIS & 30 foreign small sats - PSLV C43 - November 2018
« Reply #18 on: 10/27/2018 07:05 pm »
Also this might end up being a XL variant rather than a CA variant reason being that a extra 450 kg payload was intended to fly on C42 (Which was supposed to be XL variant rather than CA). If that extra 450 kg payload is included on this mission than this will become a XL variant due to payload mass being too heavy for CA and G variant of PSLV being retired.

HySIS is using the SSB-2 microsatellite bus.  SARAL used the same bus and massed 346 kg.

Gunter gives a payload capacity of 1100 kg to a PSLV-CA to SSO.

346 kg + 450 kg = 796 kg

796 kg < 1100 kg by approximately 300 kg.

Unless there are other, unknown-to-us factors that consume over 300 kg of performance, I hypothesize that this launch will use PSLV-CA.
« Last Edit: 10/27/2018 08:28 pm by zubenelgenubi »
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Offline input~2

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There was a recent reference in the local press to a launch of HySIS at the end of November with PSLV C43

source

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