Author Topic: Proton-M/Briz-M - Raduga-1M #3 - November 11, 2013 (2346UTC)  (Read 33574 times)

Offline input~2

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From Russian wikipedia on Raduga-1M
Quote
Также на борту устанавливалась аппаратура для работы в Ka-диапазоне, а также в диапазоне миллиметровых волн (ретрансляторы Тор с частотой 20, 42, 44 ГГц).
In military communications context, these frequencies are usualy referred to as "EHF band" rather than "Ka band"
 

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Offline input~2

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S/C separation took place as planned at 0847:13UTC

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Still no TLEs at this time for the S/C and Briz-M

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Here we are!

Object A: 39375/2013-062A in 34375 x 36211 km x 0.128 (epoch Nov 12, 1432UTC)  (presumably the S/C)
Object B: 39376/2013-0162B in 33000 x 35142 km x 0.172 (epoch Nov 12, 1432UTC) (presumably Briz-M)

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Comparing the achieved injection orbits of Raduga-1M#2 and Raduga-1M#3, it seems that the latter was more inclined and less circular:

Raduga-1M#2: 5 hours after separation from Briz-M was in quasi circular GEO orbit: 35772 x 35797 km x 0.07
Raduga-1M#3: ~6 hours after separation from Briz-M was in a more elliptical orbit: 34375 x 36211 km x 0.128

Online Galactic Penguin SST

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Offline owais.usmani

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Did I read correctly that ground control has completely lost all telemetry link with the Briz-M for the full duration of its flight (till S/C sep.)!?  :o

Yeah, I was kinda surprised as to how come a federal Briz-M mission has gone so flawlessly. Looks like the Briz-M did its "thing" afterall.

Offline owais.usmani

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Confirmation from Khrunichev that there was a telemetry problem:

http://ria.ru/space/20131129/980536553.html

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