Author Topic: ISRO Mars Orbiter Mission - Nov 2013 launch to September 2014 arrival - UPDATES  (Read 437095 times)

Offline antriksh

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #100 on: 07/26/2013 03:19 AM »
not everybody is happy with the Mars mission
http://www.firstpost.com/india/mars-mission-is-a-publicity-stunt-former-isro-chief-madhavan-nair-982779.html

 All the detractors are harping on one point that not much can be done with 15 kg of scientific payloads without trying to understand that this mission is a low cost technology & capability demonstration mission rather than a scientific mission.
« Last Edit: 07/26/2013 03:20 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

Offline Dalhousie

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #101 on: 07/27/2013 12:38 AM »
Or that quite a bit can be achieved with 15 kg if it collects that that has not been collected before.

Some of the criticism is quite risible, about the orbit for example.
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline antriksh

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #102 on: 07/27/2013 04:24 PM »
Or that quite a bit can be achieved with 15 kg if it collects that that has not been collected before.

Some of the criticism is quite risible, about the orbit for example.

Main objective of this mission is to demonstrate the capability of putting a probe around Mars. Its like a low cost capability demonstration mission before ISRO undertakes more costly missions with heavier orbiters.
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

Online sanman

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #103 on: 07/27/2013 05:23 PM »
It's too bad a larger payload couldn't have been launched. On the other hand, it's a perfectly good launch window that shouldn't go to waste, since it won't be around for another 3 years after that.

Using this window to test out navigating a minimal science payload to Mars orbit can perhaps be better than risking a bigger, more expensive payload on the first time out. After all, it will allow ISRO to get a better idea of the issues to be encountered along the way, unlike how they were caught off guard by lunar-reflected radiation which ultimately destroyed the Chandrayaan-1 orbiter.

Online sanman

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Offline antriksh

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #105 on: 08/28/2013 02:31 AM »
Static test of PSOM XL for Mars mission successful

The Shar scientists have successfully conducted some vital static tests for strap-on motor (PSOM-XL) related to PSLV-C25/Mars mission at Satish Dhawan Space Centre at 4.35 pm on Monday. The mission is scheduled for launch in October this year. Tests were conducted in presence of the ISRO chairman, Dr K. Radhakrishnan.

The objectives of the test include evaluation on the adequacy of PSOM-XL type motor (which was already used in the launch of PSLV-C11, C17 and C19 flights earlier). PSLV-C11 was the one used for India’s first Moon Mission ‘Chandrayaan-1’.

The ignition transient performance of PSOM-XL motor with RLV-SB igniter was also evaluated apart from ballistic performance of the motor. A test to revalidate the effectiveness of water based Post Fire Quenching/Cooling System at PSOM-XL level was also one of the objectives of the test held on Monday.

http://www.deccanchronicle.com/130827/news-current-affairs/article/static-test-mars-mission-successful
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 antriksh

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #106 on: 08/30/2013 12:53 AM »
Mars mission spacecraft clears Thermo-vaccum test

"The test went off flawlessly. There were no problems either with the payloads or the spacecraft," an Isro official told TOI on Wednesday.

In the next phase, the spacecraft will be subjected to an acoustic and vibration test to assess its response again in a simulated launch environment. "Once this is completed, the spacecraft will be moved to Sriharikota sometime in the middle of September," the official said.
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: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #107 on: 08/30/2013 11:07 AM »
Mars mission spacecraft clears Thermo-vaccum test

"The test went off flawlessly. There were no problems either with the payloads or the spacecraft," an Isro official told TOI on Wednesday.

In the next phase, the spacecraft will be subjected to an acoustic and vibration test to assess its response again in a simulated launch environment. "Once this is completed, the spacecraft will be moved to Sriharikota sometime in the middle of September," the official said.

from http://articles.timesofindia.indiatimes.com/2013-08-29/science/41579438_1_spacecraft-five-payloads-isro-official

Does anyone know if LV assembly has begun?

Also, about the PSOM-XL water based Post Fire Quenching/Cooling mechanism: Seems like they're evaluating what happens when the boosters are dunked in water. Why? Are they planning on making the solid motors reusable? Or is the Quenching/Cooling for pad infrastructure?
« Last Edit: 08/30/2013 03:53 PM by AJA »

Offline K210

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #108 on: 09/01/2013 11:40 AM »
Mars mission spacecraft clears Thermo-vaccum test

"The test went off flawlessly. There were no problems either with the payloads or the spacecraft," an Isro official told TOI on Wednesday.

In the next phase, the spacecraft will be subjected to an acoustic and vibration test to assess its response again in a simulated launch environment. "Once this is completed, the spacecraft will be moved to Sriharikota sometime in the middle of September," the official said.

from http://articles.timesofindia.indiatimes.com/2013-08-29/science/41579438_1_spacecraft-five-payloads-isro-official

Does anyone know if LV assembly has begun?

Also, about the PSOM-XL water based Post Fire Quenching/Cooling mechanism: Seems like they're evaluating what happens when the boosters are dunked in water. Why? Are they planning on making the solid motors reusable? Or is the Quenching/Cooling for pad infrastructure?
LV assembly began on august 4th, PSLV C-25 is being readied for a late october/early november launch.

Offline isro-watch

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #109 on: 09/01/2013 10:17 PM »
Mars mission spacecraft clears Thermo-vaccum test

"The test went off flawlessly. There were no problems either with the payloads or the spacecraft," an Isro official told TOI on Wednesday.

In the next phase, the spacecraft will be subjected to an acoustic and vibration test to assess its response again in a simulated launch environment. "Once this is completed, the spacecraft will be moved to Sriharikota sometime in the middle of September," the official said.

from http://articles.timesofindia.indiatimes.com/2013-08-29/science/41579438_1_spacecraft-five-payloads-isro-official

Does anyone know if LV assembly has begun?

Also, about the PSOM-XL water based Post Fire Quenching/Cooling mechanism: Seems like they're evaluating what happens when the boosters are dunked in water. Why? Are they planning on making the solid motors reusable? Or is the Quenching/Cooling for pad infrastructure?

My source tells me of a problem they faced in PSOM-XL motor in IRNSS-1 flight !!! ISRO wanted to verify the motor's starting sequence

Offline AJA

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #110 on: 09/01/2013 11:36 PM »
My source tells me of a problem they faced in PSOM-XL motor in IRNSS-1 flight !!! ISRO wanted to verify the motor's starting sequence

Huh. That explains the motor evaluation. But I still can't make sense of Post-Fire quenching.

Anyway, what happened?

Online sanman

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #111 on: 09/07/2013 12:20 AM »
India set to launch Mars mission in November: UR Rao

http://zeenews.india.com/news/nation/india-set-to-launch-mars-mission-in-november-ur-rao_874760.html


Quote
Rao outlined nine challenges for the space programme: food security, energy security, environmental security, resource security, space security, space transportation, search for life, exploring universe and colonisation of Mars.

Offline isro-watch

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #112 on: 09/08/2013 04:07 AM »
My source tells me of a problem they faced in PSOM-XL motor in IRNSS-1 flight !!! ISRO wanted to verify the motor's starting sequence

Huh. That explains the motor evaluation. But I still can't make sense of Post-Fire quenching.

Anyway, what happened?

It appears that one of the strap-on motors did not start on time and had a small time lag before it started up...

Offline AJA

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #113 on: 09/09/2013 02:01 PM »



PSLV expected to be ready for spacecraft integration on October 10.
Thermo-vacuum testing completed, orbiter to be unveiled next week


http://www.deccanherald.com/content/355807/isro-unveil-mars-orbitor-mission.html




I'm slightly confused as to what unveiling means. Are they talking about the release of an official press kit / DECU film?

Offline chota

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #114 on: 09/10/2013 12:30 PM »
Quote


I'm slightly confused as to what unveiling means. Are they talking about the release of an official press kit / DECU film?

The media will be shown the spacecraft inside the clean room, where it is being built

Offline go4mars

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #115 on: 09/10/2013 02:18 PM »
India set to launch Mars mission in November: UR Rao

http://zeenews.india.com/news/nation/india-set-to-launch-mars-mission-in-november-ur-rao_874760.html


Quote
Rao outlined nine challenges for the space programme: food security, energy security, environmental security, resource security, space security, space transportation, search for life, exploring universe and colonisation of Mars.
Nice find.   A new meaning for the colloquial term "Indian Colony"!  Nicely done India.  Good form!
Elasmotherium; hurlyburly Doggerlandic Jentilak steeds insouciantly gallop in viridescent taiga, eluding deluginal Burckle's abyssal excavation.

Offline antriksh

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #116 on: 09/11/2013 12:04 PM »
ISRO MARS ORBITER First Image
« Last Edit: 09/12/2013 03:25 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

Offline antriksh

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #117 on: 09/12/2013 03:04 AM »
In a first, two civilian ships to support Mars orbiter launch

For the first time in the history of India's space flights, two civilian ships will play a supporting role in India's forthcoming flight to Mars designated as the Mars Orbiter Mission.

the current plans project that the 70-metre antenna of Nasa's deep space network at Canberra in Australia will acquire the first signal of the crucial Mars orbiter insertion in September 2014 after a nearly 300-day flight.


Lessons learnt from the Chandrayaan mission have been embedded into the Mars mission. "The powering system of the spacecraft has been changed

the mission had incorporated a number of redundant systems to ensure a successful Mars capture of the spacecraft. "The on-board autonomy called for the development of 68 new software modules,''

http://timesofindia.indiatimes.com/home/science/In-a-first-two-civilian-ships-to-support-Mars-orbiter-launch/articleshow/22503832.cms
« Last Edit: 09/12/2013 03:05 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

Offline antriksh

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« Last Edit: 09/12/2013 12:03 PM 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

Offline AJA

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Re: PSLV C25, ISRO Mars Mission, October 21 - November 7, 2013
« Reply #119 on: 09/21/2013 11:07 AM »

Because ISRO keep mentioning the search for CH4 as one of the 'main goals', this recent news is relevant:

Curiosity doesn't detect Methane


- Six detection runs: presumably in slightly different locations, albeit all 'local' as opposed to global - when comparing a rover's and an orbiter's footprints. Nonetheless, they do say that even if localised methane (up to 45 ppb) had dispersed globally, it should've been above detection threshold.
- Upper limit for concentration established, based on their confidence in the measurement protocol, plus the sensitivity of the Tunable Laser Spectrometer (part of Sample Analysis at Mars) is 1.3 ppb (One sixth of previous estimates)


Uniquely,
Quote
The laboratory also can concentrate any methane to increase the gas' ability to be detected. The rover team will use this method to check for methane at concentrations well below 1 part per billion.


... so the window's probably open on lower concentrations.


Anyway, my question is: Does anyone know of the figure of sensitivity for our CH4 detector on the orbiter? Or even the precision of the Fabry-Perot Etalon interferometer that we're using in the instrument?

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