Author Topic: Soyuz and progress  (Read 3200 times)

Offline oxford750

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Soyuz and progress
« on: 07/29/2009 11:48 pm »
Hi folks:

I hope this is in the right section as I did not know where to put it.

Soyuz and Progress look similar on the outside but which has more carrying capacity?

Thanks
Oxford750

Offline hop

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Re: Soyuz and progress
« Reply #1 on: 07/29/2009 11:59 pm »
Hi folks:

I hope this is in the right section as I did not know where to put it.

Soyuz and Progress look similar on the outside but which has more carrying capacity?

Thanks
Oxford750
Google is your friend.

Soyuz:
http://www.nasa.gov/mission_pages/station/structure/elements/soyuz/spacecraft_detail.html
http://en.wikipedia.org/wiki/Soyuz_(spacecraft)

Progress:
http://www.nasa.gov/mission_pages/station/structure/elements/progress.html
http://en.wikipedia.org/wiki/Progress_(spacecraft)

Bottom line:
Progress can carry more cargo to the station, but you need Soyuz to carry crew or bring them back.

Progress generally does not return anything (except flaming debris) to the earth, although some small return capsules were flown in the Mir program.
« Last Edit: 07/31/2009 02:41 am by hop »

Offline oxford750

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Re: Soyuz and progress
« Reply #2 on: 07/30/2009 10:26 pm »
Thanks Hop:

It is just strange to me that Progress (with more room) can't be adaped to carry cosmonats/astronauts.

Something else I just though of, the escape system that is used by the russians to escape a rocket failure, how is it DISPOSED of if the soyuz makes it to orbit?

Thanks
Oxford750




Offline Jorge

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Re: Soyuz and progress
« Reply #3 on: 07/30/2009 11:04 pm »
Thanks Hop:

It is just strange to me that Progress (with more room) can't be adaped to carry cosmonats/astronauts.

That makes absolutely no sense. The two spacecraft are similar in mass and almost exactly the same dimensions, externally. Progress can carry more cargo precisely because it lacks the amenities required by a crew (life support, heat shield, etc). A "Progress adapted to carry cosmonauts" would be... a Soyuz. Period.

Quote
Something else I just though of, the escape system that is used by the russians to escape a rocket failure, how is it DISPOSED of if the soyuz makes it to orbit?

It is jettisoned long before reaching orbit.
JRF

Offline Danderman

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Re: Soyuz and progress
« Reply #4 on: 07/30/2009 11:10 pm »
It is just strange to me that Progress (with more room) can't be adaped to carry cosmonats/astronauts.

The Soyuz has much more room than Progress, since Soyuz has 2 habitable modules, not one.

Having said that, my observation has been that the Progress orbital module is larger than the Soyuz orbital module, although I never seen this mentioned anywhere.


Offline oxford750

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Re: Soyuz and progress
« Reply #5 on: 07/31/2009 07:49 am »
Thanks Hop:

It is just strange to me that Progress (with more room) can't be adaped to carry cosmonats/astronauts.

That makes absolutely no sense. The two spacecraft are similar in mass and almost exactly the same dimensions, externally. Progress can carry more cargo precisely because it lacks the amenities required by a crew (life support, heat shield, etc). A "Progress adapted to carry cosmonauts" would be... a Soyuz. Period.

Quote
Something else I just though of, the escape system that is used by the russians to escape a rocket failure, how is it DISPOSED of if the soyuz makes it to orbit?

It is jettisoned long before reaching orbit.

Thanks for those answers Jorge:

Going back to the escape system however (this I should have been more clear on).


I realize  it is jettissoned sometime before the crew reach orbit,but I am sure the Russians would NOT want a "live" rocket motor falling back to earth, so do you perhaps know what happens to it?

Thanks
Oxford750

Offline anik

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Re: Soyuz and progress
« Reply #6 on: 07/31/2009 03:41 pm »
I realize it is jettisoned sometime before the crew reach orbit, but I am sure the Russians would NOT want a "live" rocket motor falling back to earth, so do you perhaps know what happens to it?

LES tower is separating from rocket on 113.38 seconds after liftoff. It is returning to Earth into special area of Kazakhstan where blocks of the first stage of rocket are falling, approximately at distance of 350 km from the launch pad. Special people from Russian enterprises are picking up pieces of rocket and delivering their somewhere.

Offline oxford750

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Re: Soyuz and progress
« Reply #7 on: 07/31/2009 10:58 pm »
I realize it is jettisoned sometime before the crew reach orbit, but I am sure the Russians would NOT want a "live" rocket motor falling back to earth, so do you perhaps know what happens to it?

LES tower is separating from rocket on 113.38 seconds after liftoff. It is returning to Earth into special area of Kazakhstan where blocks of the first stage of rocket are falling, approximately at distance of 350 km from the launch pad. Special people from Russian enterprises are picking up pieces of rocket and delivering their somewhere.

Thanks anik


oxford750

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