Author Topic: Soyuz-2.1b/Fregat - EgyptSat-A - Baikonur - February 21, 2019  (Read 2917 times)

Offline Comet

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Quote
Rocket and Space Corporation Energia (RSC Energia) revealed on 28 July 2016 that it has signed a deal worth U.S.$100 million to help build the Egyptsat-A, the replacement for Egyptsat-2 that in April 2015 failed in orbit after only a year after its launch. Egyptsat-A is being built for Egypt’s National Authority for Remote Sensing and Space Sciences (NARSS).

source: http://spacewatchme.com/2016/08/russias-rsc-energia-help-egypt-build-egyptsat-remote-sensing-satellite/

edited by mod
« Last Edit: 01/16/2019 02:41 pm by input~2 »

Offline zubenelgenubi

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Re: Soyuz-2-1B - EgyptSat-A - Baikonur - December 27, 2018
« Reply #1 on: 10/25/2018 06:32 am »
Updates re: EgyptSat-A

Re: Satellite:
EgyptSat-A - December 27:
https://ria.ru/science/20181002/1529757987.html

Thus:
Planned Russian space launches
(suborbital launches are not included!)

2018
Date Time (UTC) – Satellite(s) – Rocket/Upper stage – Cosmodrome

December 27 - EgyptSat-A - Soyuz-2.1b - Baikonur, 31/6

Changes on October 3
***

Re: Soyuz launch vehicle:
From Russian space program in 2018:
Quote
The launch vehicle for the mission arrived at Baikonur around the middle of October 2018.

And:
Google translation:
"Two Soyuz 2.1 missiles were delivered to Baikonur, a source at the cosmodrome told RIA Novosti. These are the first carriers who arrived here after a recent accident.

A train arrived from Samara, which delivered two Soyuz launch vehicles to the cosmodrome: Soyuz-2-1b, intended for the Egyptian satellite EgyptSat-A scheduled for December 27, and Soyuz-2-1a, which on February 8, 2019, the Progress MS-11 cargo ship should be put into orbit, the agency’s source said.

According to him, both launches will be held from the 31st platform."

https://ria.ru/science/20181019/1531018489.html
***

EgyptSat-2 launch thread

Suggesting to mods a thread move to "Russian Launchers" subforum.
EDIT: Thank you!
« Last Edit: 11/05/2018 03:25 pm by zubenelgenubi »
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Offline zubenelgenubi

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Cross-post re: LV upper stage:
EgyptSat-A
27 декабря – EgyptSat-A (MisrSat A) – Союз-2-1Б/Фрегат-М – Байконур 31/6

Soyuz 2.1b + Fregat M
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Offline zubenelgenubi

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Re: Soyuz-2-1B - EgyptSat-A - Baikonur - December 27, 2018
« Reply #3 on: 11/16/2018 12:20 am »
Is EgyptSat-A expected to launch into a 51.6 deg. inclination orbit, as its predecessor did?

If so, why?  Why not launch into a SSO more suited for remote-sensing, on a Soyuz, from Plesetsk or Vostochniy?  (My understanding, perhaps incomplete, is that Kazakhstan no longer allows SSO azimuth launches from Baikonur.)

Any idea of the launch window?
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Per https://www.kommersant.ru/doc/3806412 testing delays has slipped this launch to February 7, 2019.

Is EgyptSat-A expected to launch into a 51.6 deg. inclination orbit, as its predecessor did?

If so, why?  Why not launch into a SSO more suited for remote-sensing, on a Soyuz, from Plesetsk or Vostochniy?  (My understanding, perhaps incomplete, is that Kazakhstan no longer allows SSO azimuth launches from Baikonur.)

Any idea of the launch window?

According to the article above EgyptSat-A is going to SSO this time (hence the use of Soyuz-2.1b/Fregat, using one originally allocated for GLONASS launches according to the article). Kazakhstan actually still allows SSO launches from Baikonur as long as Russia pay the clean up bill.
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Nicolas PILLET

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This is strange, because the first OneWeb launch is scheduled on the same day from CSG. Since both launches use Fregat upper stage, I doubt they can be conducted on the same day...
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Offline GWR64

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Re: Soyuz-2-1B - EgyptSat-A - Baikonur - December 27, 2018
« Reply #6 on: 11/24/2018 10:04 am »
Per https://www.kommersant.ru/doc/3806412 testing delays has slipped this launch to February 7, 2019.

Is EgyptSat-A expected to launch into a 51.6 deg. inclination orbit, as its predecessor did?

If so, why?  Why not launch into a SSO more suited for remote-sensing, on a Soyuz, from Plesetsk or Vostochniy?  (My understanding, perhaps incomplete, is that Kazakhstan no longer allows SSO azimuth launches from Baikonur.)

Any idea of the launch window?

According to the article above EgyptSat-A is going to SSO this time (hence the use of Soyuz-2.1b/Fregat, using one originally allocated for GLONASS launches according to the article). Kazakhstan actually still allows SSO launches from Baikonur as long as Russia pay the clean up bill.

In contrast to Egyptsat-2 this time the Fregat is used.
So Egyptsat-A reaches its orbit immediately and can be put into operation faster, right?
A Volga could do that too, along with a Soyuz 2.1a or 2.1v.
But is not available? So a Soyuz 2.1b / Fregat-M is used because it's available? crazy
A Soyuz 2 with Volga could also launch from  Plesetzk  in the SSO.
A Soyuz 2 / Fregat SSO launch from Plesetzk did not exist yet.
I suspect that has something to do with the fall zone of the third stage.
« Last Edit: 11/24/2018 10:08 am by GWR64 »

Offline Steven Pietrobon

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Helios Wire are launching a satellite on this flight, probably called Helios Wire 4.

https://spacenews.com/helios-wire-sees-a-hidden-fortune-in-finding-lost-assets/

"Helios is preparing to launch its first satellite in October on a SpaceX Falcon 9 rocket. The firm’s previous attempt to send a satellite into orbit in November 2017 was unsuccessful because it was riding on a Russian Soyuz-2.1b rocket that failed. Helios plans to send another satellite into orbit on a Soyuz in December and a third on a February Soyuz flight."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline zubenelgenubi

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This is strange, because the first OneWeb launch is scheduled on the same day from CSG. Since both launches use Fregat upper stage, I doubt they can be conducted on the same day...

Belated cross-post; February 7 launch ops coverage conflict resolved:
Late February - OneWeb (x4-6):
https://ria.ru/20181214/1547964496.html
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Offline zubenelgenubi

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Launch delayed to February 21.

Re-conflicted?  Is two days sufficient gap for support of both Soyuz/Fregat launches?

https://ria.ru/20181229/1548885463.html
Google translate:
Quote
“Two launches of the Soyuz-ST carrier rocket with the Fregat upper stage are scheduled for February 19 and March 26. Four or six British OneWeb British communication satellites are planned to be launched into the first launch, and four British O3b communications satellites in the second - Said the source agency.

https://ria.ru/20181229/1548891593.html
Google translate:
Quote
"The launch of the Soyuz-2.1b launch vehicle with the Fregat upper stage and satellite EgyptSat-A was postponed from February 7 to February 21. The launch time remained the same - 19.47 Moscow time," the agency’s source said.
« Last Edit: 12/30/2018 03:58 am by zubenelgenubi »
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