Author Topic: PSLV C16, Resourcesat-2 - April 20, 2011  (Read 40286 times)

Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #40 on: 04/20/2011 05:16 am »
"After 3 more PSLV launches, GSLV launches should resume"

Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #41 on: 04/20/2011 05:22 am »
"3 more PSLV launches are to be performed before the end of this year"

Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #42 on: 04/20/2011 06:01 am »
Launch video on Youtube   /watch?v=2nRKDUpMivw
Part II at    /watch?v=ndv28Z_gjVc
« Last Edit: 04/20/2011 06:59 am by input~2 »

Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #43 on: 04/20/2011 06:11 am »
PSLV C-16 launch successful :-)

~Prasad

Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #44 on: 04/20/2011 07:48 am »
Staging 3-4 Sep. Fourth Stage ingition.

Lovely moment with one controller praying.

The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan! ;)

Offline robertross

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #45 on: 04/20/2011 11:10 am »
Congrats on a successful launch.

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #46 on: 04/20/2011 01:21 pm »
Staging 3-4 Sep. Fourth Stage ingition.

Lovely moment with one controller praying.

The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan! ;)

Ah there we go then! He was sat in the middle of the consoles, so couldn't tell. Was a really nice moment :)
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Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #47 on: 04/20/2011 02:56 pm »
USSTRATCOM has catalogued 4 objects for this launch:
37387/11015A no elset yet
37388/11015B in 804 x 821km incl. 98.8°
37389/11015C in 789 x 816km incl. 98.7°
37390/11015D in 805 x 824km incl. 98.8°
« Last Edit: 04/20/2011 02:57 pm by input~2 »

Offline edkyle99

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #48 on: 04/21/2011 04:16 am »
Not writing an article as there's not much on the vehicle etc.

C-16 was the first "standard" PSLV with six "S9" strap on solid motors to fly since 2007.  One PSLV-XL with six "S12" strap on motors and five "Core Alone" PSLVs have flown since 2007.

C-16 was also the 14th consecutive PSLV success.

 - Ed Kyle

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #49 on: 04/21/2011 04:38 am »
Not writing an article as there's not much on the vehicle etc.

C-16 was the first "standard" PSLV with six "S9" strap on solid motors to fly since 2007.  One PSLV-XL with six "S12" strap on motors and five "Core Alone" PSLVs have flown since 2007.

C-16 was also the 14th consecutive PSLV success.

 - Ed Kyle

Thanks Ed - and I should qualify what I meant.....I really don't like to write articles shorter than 500 words. Would have struggled.

Good info to add to the thread of course.
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Online sdsds

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #50 on: 04/21/2011 05:12 am »
C-16 was also the 14th consecutive PSLV success.

Wow!

"A streak of repeated outcomes can be an important source of information for decision makers trying to predict the outcome of the next event." (Altmann, E.M. and Burns,  B.D., ICCM-2004)

The informal (n+1)/(n+2) predictor gives a 93.75% chance that the next PSLV launch will also be a success.  With slightly more rigor, the probability of 14 successful launches in 14 attempts is greater than 50% only if the underlying probability of success of each single launch is greater than or equal to 95.17%.  (0.9517 raised to the 14th power is 0.5.)  Now trying to sound totally like a statistician:  with 95% confidence we can be certain the probability of each individual success was greater than 81%.  (0.81 raised to the 14th power is 0.05.)

(Your mileage may vary.  I am not a mathematician.  Some assumptions were made.)
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Offline Lewis007

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #51 on: 04/21/2011 10:45 am »
A couple of pictures of the launch

Offline GClark

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #52 on: 04/21/2011 01:09 pm »
Lovely moment with one controller praying.

The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan! ;)

Ah there we go then! He was sat in the middle of the consoles, so couldn't tell. Was a really nice moment :)

Somehow I don't think the chairman needes to engage in the last resort of scoundrels... ;)

Congratulations to ISRO on successful recovery of launch mojo.  Upward and onward.

Offline Phillip Clark

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #53 on: 04/22/2011 08:03 am »
No orbital data are available for Resourcesat 2 from Space-Track so I guess that the Indians are the latest to persuade the United States not to publish orbital data.


[mod: post moved from "Indian launch schedule" thread]
« Last Edit: 04/22/2011 03:04 pm by input~2 »
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Offline input~2

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #54 on: 04/22/2011 03:33 pm »
For Resourcesat-2, at least an orbit is given as:
805km x 824km incl. 98.78° (orbit of former object D)
« Last Edit: 04/22/2011 03:59 pm by input~2 »

Offline pradeep

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #55 on: 04/22/2011 06:14 pm »
No orbital data are available for Resourcesat 2 from Space-Track so I guess that the Indians are the latest to persuade the United States not to publish orbital data.


[mod: post moved from "Indian launch schedule" thread]

Some have construed this to mean that RESOURCESAT-2 is a spy sat.

The thing about the 4 ground-lit and the 2 air-lit strap ons was interesting.

ISRO has put everything from the PSLV-C16 mission into a single page - http://isro.gov.in/scripts/pslv-c16.aspx - though I wish they had done it before the launch.

Online jcm

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #56 on: 04/23/2011 01:44 am »
No orbital data are available for Resourcesat 2 from Space-Track so I guess that the Indians are the latest to persuade the United States not to publish orbital data.


[mod: post moved from "Indian launch schedule" thread]

Some have construed this to mean that RESOURCESAT-2 is a spy sat.
 

Like me perhaps? I think "Don't publish my orbital data please" is pretty much the DEFINITION of a spy sat at this point. It certainly leads me to believe that the Indian government consider it to be one. Of course it is 'dual use'. But there are plenty of civilian imaging satellites whose product is sometimes bought by intelligence agencies but whose tracking data is public. When one is omitted - causing increased risk of collisions and increasing tensions due to lack of transparency - the implication is that it is considered to be a military/intelligence asset by the country requesting the omission. It also violates at least the spirit of the UN convention on the registration of outer space objects, if not the letter (or, admittedly, the practical implementation).
  I have therefore changed the designation of Resourcesat 2 in my database from "civilian imaging" to  "defense imaging (+civilian imaging)".

 - Jonathan
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Offline seshagirib

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #57 on: 04/23/2011 09:12 am »
However, according to this news report, even RISAT-2 is a "civilian" Sat.:

http://www.hindu.com/2011/04/22/stories/2011042254500900.htm

"
-----
The nine IRS in service now are the Technology Experiment Satellite, the Resourcesat-2, the Cartosat-1, 2, 2A and 2B, the Indian Mini Satellite-1, the Radar Imaging Satellite-2 and the Oceansat-2.

They make the IRS system the largest civilian remote-sensing satellite constellation in the world.
-----
"
astronaut on space ship earth

Offline pradeep

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #58 on: 04/23/2011 03:09 pm »
Like me perhaps? I think "Don't publish my orbital data please" is pretty much the DEFINITION of a spy sat at this point. It certainly leads me to believe that the Indian government consider it to be one. Of course it is 'dual use'. But there are plenty of civilian imaging satellites whose product is sometimes bought by intelligence agencies but whose tracking data is public. When one is omitted - causing increased risk of collisions and increasing tensions due to lack of transparency - the implication is that it is considered to be a military/intelligence asset by the country requesting the omission. It also violates at least the spirit of the UN convention on the registration of outer space objects, if not the letter (or, admittedly, the practical implementation).
  I have therefore changed the designation of Resourcesat 2 in my database from "civilian imaging" to  "defense imaging (+civilian imaging)".

 - Jonathan


Do you have any place where the specific request from ISRO/India was quoted as reason for the non-display of TLE information? The NORAD website does not work for me.

I have written to ISRO Tracking Station requesting for TLE. I will wait for a week before calling them for the information.

I agree with you that unavailability of TLEs makes life much dangerous for others. The US has also launched OTVs which also makes it similarly dangerous.

You cannot make such claims without at least looking for credible reasons for which the information is absent. This is purely speculative.

The website is yours and you are free to claim anything you want.

- Pradeep

Online jcm

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Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #59 on: 04/23/2011 09:15 pm »
Like me perhaps? I think "Don't publish my orbital data please" is pretty much the DEFINITION of a spy sat at this point. It certainly leads me to believe that the Indian government consider it to be one. Of course it is 'dual use'. But there are plenty of civilian imaging satellites whose product is sometimes bought by intelligence agencies but whose tracking data is public. When one is omitted - causing increased risk of collisions and increasing tensions due to lack of transparency - the implication is that it is considered to be a military/intelligence asset by the country requesting the omission. It also violates at least the spirit of the UN convention on the registration of outer space objects, if not the letter (or, admittedly, the practical implementation).
  I have therefore changed the designation of Resourcesat 2 in my database from "civilian imaging" to  "defense imaging (+civilian imaging)".

 - Jonathan


Do you have any place where the specific request from ISRO/India was quoted as reason for the non-display of TLE information? The NORAD website does not work for me.

I have written to ISRO Tracking Station requesting for TLE. I will wait for a week before calling them for the information.

I agree with you that unavailability of TLEs makes life much dangerous for others. The US has also launched OTVs which also makes it similarly dangerous.

You cannot make such claims without at least looking for credible reasons for which the information is absent. This is purely speculative.

The website is yours and you are free to claim anything you want.

- Pradeep


Pradeep - you're right that I am being speculative here. But it is informed speculation. I would bet money that I'm right. If it turns out there is another reason (I haven't thought of a plausible one) I'll certainly print a retraction.

And by the way, please don't take this as an anti-ISRO thing on my part. I have the greatest respect for the ISRO team and was thrilled to visit them in Bangalore and Trivandrum a few years ago. I'm equally against the suppression of the TLEs for the US OTV (and for Israeli Ofeq, French Heiios, etc.)My feeling is that by 'naming and shaming' those who suppress such information, rather than letting it go quietly unmentioned, they will eventually be persuaded to change their policy.

 - Jonathan
« Last Edit: 04/23/2011 09:21 pm by jcm »
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