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PSLV C10, TecSAR (Polaris) - January 21, 2008
by
Satori
on 20 Sep, 2007 13:46
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#1
by
tappa
on 21 Sep, 2007 09:26
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#2
by
Satori
on 21 Sep, 2007 12:11
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tappa - 21/9/2007 4:26 AM
Some more info on the launch here... ISRO braces for launch of military satellite
This launch is getting interesting. The media still says that Polaris and CartoSat-2A will be launched toghether, but the latest informations point to the fact that Polaris will be launched on October 3 and CartoSat-2A will be launched in December. So, let's wait and see...
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#3
by
William Graham
on 21 Sep, 2007 17:50
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Is there likley to be a webcast?
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#4
by
Satori
on 23 Sep, 2007 20:30
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GW_Simulations - 21/9/2007 12:50 PM
Is there likley to be a webcast?
I wouldn't expect a webcast of this launch because of it's military nature.
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#5
by
annu
on 24 Sep, 2007 09:16
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Satori - 21/9/2007 6:11 PM
This launch is getting interesting. The media still says that Polaris and CartoSat-2A will be launched toghether, but the latest informations point to the fact that Polaris will be launched on October 3 and CartoSat-2A will be launched in December. So, let's wait and see...
From discussions in other forums it appears that Polaris ( Let us hope that's the real name .. it has changed at least thrice ) will be in an orbit with inclination of 130 to 150 deg. Cartosat has about 98 deg also the altitude appears to be very different for each of them so it may not be easy to accomodate both together.
Also isro-watch reports that [ on 31/8/2007 1:30 AM (#181846 - in reply to #14589) ] next pslv has only Polaris.
Yes this launch is getting interesting!
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#6
by
s^3
on 24 Sep, 2007 10:29
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As per
http://directory.eoportal.org/pres_TecSARSARTechnologyDemonstrationSatellite.htmlTecsar ( Polaris ) will have following orbit.
Sun-synchronous circular orbit, altitude of 550 km, inclination = 143.3º, 15.22 orbits/day, repeat cycle of 36 days. It has a launch weight of 300 Kgs.
While the Cartosat 2A should have ( Exact replica of Cartosat 2 ):
Altitude = 637 Kms, Inclination = 98 deg and Launch mass = 680 Kgs.
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There are 2 querries..
Is it possible for a rocket to steer about 45 deg while rising from 550 Kms to 635 Kms?
Also whether the PSLV spacecraft bay will be able to accomodate both the satellites?
Some experts on launch vehicles should be able to comment.
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S^3
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#7
by
William Graham
on 25 Sep, 2007 06:53
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A PSLV-CA (the light version) could easily manage the combined masses of the two spacecraft. Not sure about steering, probably not possible, but CartoSat-2A could be going to a different orbit to CartoSat-2. I don't know about the physical size of the spacecraft.
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#8
by
Satori
on 01 Oct, 2007 22:44
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Will this launch go on October 3? Until this time there are no references on the ISRO page about the forthcoming launch. This
news about a delay of the launch (that was schedule for September 20th) is very interesting!!!
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#9
by
annu
on 03 Oct, 2007 05:07
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Heard that POLARIS has been taken back to Israel by the furious Israelis.
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#10
by
hornbill2007
on 03 Oct, 2007 09:14
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annu - 3/10/2007 9:07 AM
Heard that POLARIS has been taken back to Israel by the furious Israelis.
Please post the source when such serious developments are discussed.
Chau.
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#11
by
Satori
on 03 Oct, 2007 12:03
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hornbill2007 - 3/10/2007 4:14 AM
annu - 3/10/2007 9:07 AM
Heard that POLARIS has been taken back to Israel by the furious Israelis.
Please post the source when such serious developments are discussed.
Chau.
We are dealing with a military subject here, so it apears to be obvious that some sources cannot be nammed for their own security.
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#12
by
Satori
on 03 Oct, 2007 14:23
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At this time we know nothing about this launch. I'm assuming it was delayed or canceled...
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#13
by
hornbill2007
on 04 Oct, 2007 06:49
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Don't we need at least some published material as source?
Anyways reviewing ISRO officials' statements earlier, the target for the twin launch is end of the year. So, I believe, this technical delay must have been factored into the schedule.
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#14
by
Satori
on 04 Oct, 2007 15:35
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hornbill2007 - 4/10/2007 1:49 AM
Don't we need at least some published material as source?
Anyways reviewing ISRO officials' statements earlier, the target for the twin launch is end of the year. So, I believe, this technical delay must have been factored into the schedule.
Well, if our sources near ISRO with some material to work with, we don't need that published material.
As I said before, this is a very interesting launch. See, first we had the news that we would have a israeli military satellite to be launched toghether with a indian military satellite (respectively, Polaris (TechSAR) and CartoSat-2A). In the beggining there was even the doubt that CartoSat-2A really existed. In fact, and after some months, we had the confirmation that there was CartoSat-2A indeed.
So we would have a indian launch with a double military cargo. Some weeks before the launch, that was schedule to take place at the end of September, there were some news that the PSLV wasn't capable to carry both sats. To be honest I find this really strange. So, there was the decision to launch Polaris alone. Then the launch date was unofficialy announced to be October 3 and after this we had the rumors that the israelis were not happy for the all world to know the launch date some days before and decided to scrub the launch contract and to take their nice satellite back to Israel.
Now we know that the ISRO director has said that the launch would take place before the year's end wainting to resolve some kind of thecnical problem that arose with the launch vehicle.
India is planning to launch another PSLV before 2007 becomes to old and this one with CartoSat-2A and a few more microsats.
Maybe hornbill2007 is right; maybe this technical delay was factored into the schedule to wait for the dust to settle down and then try to launch Polaris when we are looking other way.
So, once again with this very secretive launch we have to wait and see what happens
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#15
by
ximig
on 05 Oct, 2007 13:29
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hahhahhahha~~~
the up annalization is quite reasonable!!!
It's so interesting!!
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#16
by
Leroy
on 05 Oct, 2007 19:10
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ximig - 5/10/2007 8:29 AM
hahhahhahha~~~
the up annalization is quite reasonable!!!
It's so interesting!!
Well, what do you want to say? This analyzation is right or not right? Do you knew anything veryfied about subject?
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#17
by
annu
on 06 Oct, 2007 06:37
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WE had discussed following :
1. Is it possible to launch BOTH Polaris and Carto-2A together?
2. Israelis have taken back the satellite ( that was of course without any proof)
etc.
Does this report make it possible?
http://www.domain-b.com/aero/June/2007/20070611_military.htm"According to reports, the Cartosat 2A will carry an advanced synthetic aperture radar (SAR) made by Israel and a digital camera with a resolution of less than one metre. "
Israeli SAR on Cartosat-2A as a second payload? Also in such circumstances Isarelis can bring the SAR and 'go back' empty handed.
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#18
by
Leroy
on 06 Oct, 2007 09:50
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TecSAR (aka Polaris) is independence satellite, and it exist.
Launch of TecSAR must be alone, which TecSAR need to take a retrograd orbite (to West direction), as Ofeq-type satellites.
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#19
by
Skyrocket
on 06 Oct, 2007 09:55
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The retrograde orbit reportet is from a time, when TECSAR ws to be launched by Shavit. My israelian source told me, that TECSAR will be launched in eastern direction (without specifying it)