Author Topic: ISRO General News  (Read 195414 times)

Offline AJA

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Re: ISRO General News
« Reply #20 on: 10/03/2013 04:49 AM »
Borderline relevancy to this thread (I'd have posted over at Bharat Raksak, but I don't have an account there), but nonetheless: http://www.business-standard.com/article/pti-stories/separate-commands-for-spl-ops-cyber-security-space-iaf-chief-113100200574_1.html


Given that we only got our first dedicated military satellite (GSAT-7) last month - and that too on the back of an Ariane (so limited orbital elements and detail privacy), is the MoD really planning for many more birds? Are they budgeting for associated design and operational infrastructure i.e. home-launched / more tracking stations etc.?


Also, who was operating our national reconnaissance thus far? IAF/Navy/Army or ISRO personnel? NRSC?


I'd also love to be in the room when the IAF tries to wrest control of GSAT-7 from the Navy. LOL
« Last Edit: 10/03/2013 04:50 AM by AJA »

Offline ss1_3

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Re: ISRO General News
« Reply #21 on: 11/10/2013 07:08 AM »
ISRO chief speaks at length (read at your leisure ;D) post MOM launch about the mission planning, GSLV development, upcoming missions and collaborations with other space agencies.

http://www.business-standard.com/article/current-affairs/we-have-to-turn-on-mars-mission-s-instruments-after-300-days-k-radhakrishnan-113111000161_1.html

Offline abhishek

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Re: ISRO General News
« Reply #22 on: 11/11/2013 05:28 AM »
just got the news, apparently the 4th firing of LAM was not a success.The craft has failed to reach it's intended orbit.

According to some sources they have detected some trouble with LAM....
10, 9, ignition sequence start 6, 5, 4, 3, 2, 1, 0, all engines running Lift off, we have a lift off, lift off

Offline cosmonautdjp

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Re: ISRO General News
« Reply #23 on: 11/11/2013 04:10 PM »
just got the news, apparently the 4th firing of LAM was not a success.The craft has failed to reach it's intended orbit.

According to some sources they have detected some trouble with LAM....

Here's a great blog post by Emily Lakdawalla that includes an official statement by ISRO. http://www.planetary.org/blogs/emily-lakdawalla/2013/11110806-mars-orbiter-mission-update.html

It seems that the spacecraft's main engine shutdown early while conducting a redundancy test on solenoid valve coils, but otherwise MOM is healthy.  ISRO plans a supplemental burn today to make up for the underburn.  A source in that blog post says MOM still has 4kg of surplus fuel.

The official statement reads:

"Supplementary Orbit Raising Manoeuvre Planned for Mars Orbiter Spacecraft

In the fourth orbit-raising operation conducted this morning (Nov 11, 2013), the apogee (farthest point to Earth) of Mars Orbiter Spacecraft was raised from 71,623 km to 78,276 km by imparting an incremental velocity of 35 metres/second (as against 130 metres/second originally planned to raise apogee to about 100,000 [1 lakh]* km). The spacecraft is in normal health. A supplementary orbit-raising operation is planned tomorrow (November 12, 2013) at 0500 hrs IST to raise the apogee to nearly 1 lakh km.

During the orbit-raising operations conducted since November 7, 2013, ISRO has been testing and exercising the autonomy functions progressively, that are essential for Trans-Mars Injection (TMI) and Mars Orbit Insertion (MOI).

During the first three orbit-raising operations, the prime and redundant chains of gyros, accelerometers, 22 Newton attitude control thrusters, attitude and orbit control electronics as well as the associated logics for their fault detection isolation, and reconfiguration have been exercised successfully. The prime and redundant star sensors have been functioning satisfactorily. The primary coil of the solenoid flow control valve was used successfully for the first three orbit-raising operations.

During the fourth orbit-raising operations held today (November 11, 2013), the redundancies built-in for the propulsion system were exercised, namely, (a) energising the primary and redundant coils of the solenoid flow control valve of 440 Newton Liquid Engine and (b) logic for thrust augmentation by the attitude control thrusters, when needed. However, when both primary and redundant coils were energised together, as one of the planned modes, the flow to the Liquid Engine stopped. The thrust level augmentation logic, as expected, came in and the operation continued using the attitude control thrusters. This sequence resulted in reduction of the incremental velocity.

While this parallel mode of operating the two coils is not possible for subsequent operations, they could be operated independently in sequence."

Offline input~2

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Re: ISRO General News
« Reply #24 on: 11/11/2013 08:32 PM »
Please use the MOM thread for all items related to MOM
http://forum.nasaspaceflight.com/index.php?topic=29440.0


Offline vyoma

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Re: ISRO General News
« Reply #26 on: 11/15/2013 02:09 AM »
ISRO to celebrate 50 years of rocketry in India:
Quote
RH-200 sounding rocket set to be launched at 18:25 hours from the Thumba Equatorial Rocket Launching Station (TERLS) coming Thursday marks the 50th anniversary of a very important event - India’s entry into the space arena.

It was on November 21, 1963, at 18:25 IST that the American made Nike-Apache rocket was launched from Thumba, the first rocket to be launched from Indian soil for scientific purposes.

http://newindianexpress.com/states/kerala/ISRO-to-celebrate-50-years-of-rocketry/2013/11/15/article1891774.ece

Offline ss1_3

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Re: ISRO General News
« Reply #27 on: 11/15/2013 04:58 AM »
Proposal for a new launch pad at  Kulaseka­ra­pa­ttinam:

Quote
A PSLV rocket launched from Kulaseka­rapatti­nam could be put in orbit without a Yaw ma­neuver and even a GSLV rocket launched from there would re­quire only a 8 degree Yaw maneuver, while the same would requi­re 14 degree Yaw man­euver if launched fr­om Sriharikota.

http://www.deccanchronicle.com/131113/news-current-affairs/article/kulasekarapattinam%E2%80%99s-ideal-launch-pad

Offline antriksh

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Re: ISRO General News
« Reply #28 on: 11/15/2013 06:49 AM »
After Mars, Isro now plans a mission to the Sun

Aditya 1 has recently been reconfigured as a L1 mission and several payloads are expected to fly together. Aditya will work as a space observatory with multi-wavelength capabilities. Different modes of observational requirements will be discussed at length,”

http://www.dnaindia.com/bangalore/report-after-mars-isro-now-plans-a-mission-to-the-sun-1919556
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline ss1_3

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Re: ISRO General News
« Reply #29 on: 11/15/2013 08:04 AM »


Aditya 1 has recently been reconfigured as a L1 mission

Wonder, what's L1 here? Lagrangian point?? Report says it would have a polar orbit.

Offline antriksh

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Re: ISRO General News
« Reply #30 on: 11/15/2013 08:26 AM »


Aditya 1 has recently been reconfigured as a L1 mission

Wonder, what's L1 here? Lagrangian point?? Report says it would have a polar orbit.

Lagrangian point. No more polar orbit. The mission has been reconfigured with more payloads.
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline vyoma

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Re: ISRO General News
« Reply #31 on: 11/17/2013 12:36 PM »
Another update on proposal for new launch at Kulaseka­ra­pa­ttinam:
http://www.deccanchronicle.com/131117/news-current-affairs/article/ex-scientist-isro-bats-kulasekarapattinam

Quote
Veteran Indian Space Research Organisation scientist and former chief general manager of liquid propulsion system centre at Thiruvananthapuram, N. Sivasubramanian, along with locals, on Saturday met and urged Union minister of state in Prime Minister Office V. Narayanasamy to take steps to establish the third rocket launch centre at Kulasekarapattinam in Tamil Nadu.
 
One of the members of the team, which met the minister, later told Deccan Chronicle that the minister had assured them that Sriharikota has not been finalised for the third rocket launch centre. The minister was also learnt to have assured suitable action in the coming session of Parliament to set up the rocket launch centre in the village in southern Tamil Nadu.

Offline antriksh

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Re: ISRO General News
« Reply #32 on: 11/17/2013 01:05 PM »
It seems ISRO is developing PSLV 3S for launching upto 500 kg payload. The third stage, i.e., PS4 will be 0.8 T loading. Also, ISRO is considering developing ATV EX into a launcher for 200-400 kg nano and micro satellites.
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline AJA

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Re: ISRO General News
« Reply #33 on: 11/18/2013 07:45 AM »
It seems ISRO is developing PSLV 3S for launching upto 500 kg payload. The third stage, i.e., PS4 will be 0.8 T loading. Also, ISRO is considering developing ATV EX into a launcher for 200-400 kg nano and micro satellites.

What's ATV EX? And what's the architecture of the proposed PSLV 3S? All solids?

I don't get it. We're short of so many already-SANCTIONED communication transponders. Even if you wanted to cater to the burgeoning market for Micro and nano-satellites (which are largely indifferent to the type of orbit they're put in), your heavy lift launcher can ferry them up as secondary, tertiary, heck... 9th and 10th payloads (the PSLV's done it before) - while you're discharging your government mandate.

Also, GSLV Mk-II, Mk-III? Cryo-stage? REX? Unless their development teams are full, and there's no room for existing ISRO staff on these teams, why oh why would you develop rockets for the lower range of mass-to-orbit?

Offline vyoma

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Re: ISRO General News
« Reply #34 on: 11/18/2013 08:29 AM »
What's ATV EX?

ATV is ISRO's scramjet/ramjet project. ATV-D01 test flight was done in 2010:
http://www.isro.org/pressrelease/scripts/pressreleasein.aspx?Mar03_2010

Here's what I got about ATV-EX, from 12th five year plan papers:
Quote
Advanced Technology Vehicles Project was formed to support the new technology areas especially Dual Mode Ram Jet Engine and Scram Jet Engine flight test demonstration. The first development flight of ATV D01(using RH 560 sounding rocket) was a 100% successful flight in which all the vehicle parameters were measured and vehicl characterization was done. The requirement to dwell the vehicle in the defined M-q window for a minimum of 5s was also demonstrated. In the 12th plan, five numbers of ATV development flights are scheduled to be flight tested with Dual Mode Ramjet-Scramjet Engine Modules from 2012 to 2015 and developmental flights of ATV-EX vehicle, improving ATV-D01 configuration with sustainer fins in cruciform configuration to achieve 600 km altitude with 200 kg payload.



And what's the architecture of the proposed PSLV 3S? All solids?

Also, GSLV Mk-II, Mk-III? Cryo-stage? REX? Unless their development teams are full, and there's no room for existing ISRO staff on these teams, why oh why would you develop rockets for the lower range of mass-to-orbit?

I too would be interested to know about these :)
« Last Edit: 11/18/2013 08:37 AM by vyoma »

Offline vyoma

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Re: ISRO General News
« Reply #35 on: 11/25/2013 12:08 PM »
Few updates:
1) Second rocket port:
Quote
"A study is being undertaken on the need for a second launch site and the report is expected in couple of months," Indian Space Research Organisation (ISRO) chairman K.Radhakrishnan told IANS.

A senior ISRO official, who did not want to be identified, told IANS that Tuticorin is a good location for a rocket that needs to fly towards south.

Radhakrishnan said that for all eastward launches, the current site at Sriharikota is the best.

"We send the remote sensing (earth observation) satellites southwards. But the global trend in the remote sensing satellites is reduction in their size."

"The size of remote sensing satellites is coming down while that of communication satellites is going up. A new rocket launch site for remote sensing satellites, normally launched southwards, has to take into account the capital expenditure involved and the savings in fuel burnt by the rocket. For launching communication satellites the current site is the best," he added.

2) Third launch pad for GSLV Mk-III at Satish Dhawan Space Centre SHAR, Sriharikota:
Quote
... a study is being undertaken on constructing third launch pad at Sriharikota capable of launching upgraded geosynchronous satellite launch vehicle (GSLV) Mark III.

3) New rocket assembly facility at Satish Dhawan Space Centre SHAR, Sriharikota:
Quote
Meanwhile, ISRO has decided to construct a new rocket assembly building in order to increase the frequency of rocket/satellite launches and use the existing two launch pads effectively, he said.

At present, ISRO has two rocket assembly facilities and two launch pads at its Satish Dhawan Space Centre in Sriharikota.

4) Overview of missions planned in 12th five year plan (2012-2017):
Quote
During the 12th Plan Period, the Indian space agency has planned 58 missions for realization -- 33 satellite missions and 25 launch vehicle missions (17 PSLV, six GSLV Mark II missions and two GSLV Mark III including the experimental one).


http://www.dnaindia.com/scitech/report-second-rocket-port-depends-on-satellite-size-cost-benefit-isro-1924724

Offline AJA

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Re: ISRO General News
« Reply #36 on: 11/25/2013 03:30 PM »

Err. compare




1) Second rocket port:


A senior ISRO official, who did not want to be identified, told IANS that Tuticorin is a good location for a rocket that needs to fly towards south.

Radhakrishnan said that for all eastward launches, the current site at Sriharikota is the best.

"We send the remote sensing (earth observation) satellites southwards. But the global trend in the remote sensing satellites is reduction in their size."

"The size of remote sensing satellites is coming down while that of communication satellites is going up. A new rocket launch site for remote sensing satellites, normally launched southwards, has to take into account the capital expenditure involved and the savings in fuel burnt by the rocket. For launching communication satellites the current site is the best," he added.

http://www.dnaindia.com/scitech/report-second-rocket-port-depends-on-satellite-size-cost-benefit-isro-1924724



with


Proposal for a new launch pad at  Kulaseka­ra­pa­ttinam:

Quote
A PSLV rocket launched from Kulaseka­rapatti­nam could be put in orbit without a Yaw ma­neuver and even a GSLV rocket launched from there would re­quire only a 8 degree Yaw maneuver, while the same would requi­re 14 degree Yaw man­euver if launched fr­om Sriharikota.

http://www.deccanchronicle.com/131113/news-current-affairs/article/kulasekarapattinam%E2%80%99s-ideal-launch-pad


The illustration in the second article doesn't seem to show the 14 degree Yaw for a GSLV out of SHAR.

Offline vyoma

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Re: ISRO General News
« Reply #37 on: 11/27/2013 03:13 PM »
@AJA,
Looks like the illustration in second article is not correct :) From what I gather from first article, Sriharikota is ideal for eastward launches, and Kulasekarapattinam would be ideal for southward launches.

Offline AJA

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Re: ISRO General News
« Reply #38 on: 11/28/2013 03:42 AM »
@AJA,
Looks like the illustration in second article is not correct :) From what I gather from first article, Sriharikota is ideal for eastward launches, and Kulasekarapattinam would be ideal for southward launches.

No.. the illustration would imply that SHAR is "better" for GSLV (as stated in the DNA article), because it shows no Yaw. i.e. of course, if the map wasn't distorted (but it doesn't look like it). The Chronicle text is inconsistent with its own illustration. But I've already ranted about "news" today.

Btw, whatever happened to TERLS? I know there wasn't a lot of purpose-built infrastructure to start with... (What with it basically being a re-purposed church building with some adjoining space that was used for the Nike-Apache sounding rocket launch back when ISRO was still COSPAR etc.) but does anyone know if ISRO still maintains an operational presence there? Apart from museums and such
« Last Edit: 11/28/2013 03:43 AM by AJA »

Offline antriksh

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Re: ISRO General News
« Reply #39 on: 12/13/2013 07:03 AM »
Proposed SVAB rail route to SLP & TLP, and Proposed Auxiliary umbilical tower (on mobile launch platform) for TLP
« Last Edit: 12/13/2013 07:15 AM by antriksh »
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

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