Questions tagged [space-shuttle]

The Space Shuttle was a crewed, partially reusable low Earth orbital spacecraft operated by NASA from 1981 to 2011.

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If the space shuttle computers all output contradictory commands, how is it chosen?

The space shuttle computers use triple-redundancy, and if one computer contradicted the other two, it would be ignored. I read that if all three gave contradictory output, one computer would be ...
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How is the minimum number of TDRS satellites needed for a space station program?

What is the minimum number of retransmission satellites that you would need to assist your LEO space station program - to provide a full time coverage to ensure a total communication with the space ...
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What are the technical specifications of modern reaction control systems?

I am working on a realistic space flight simulator as a hobby, but I am finding it difficult to find technical information about modern reaction control systems (RCS) like those used on the space ...
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Were the aerodynamic control surfaces of the Space Shuttle used during ascent?

The Space Shuttle had several aerodynamic control surfaces to control it during reentry and the final phase of atmospheric flight to landing. It seems a waste to haul tons of control surface to orbit ...
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In a cryogenic fuel rocket, at what pressure is the fuel injected into the engine?

The pressure in the Space Shuttle's main engines must be very high to get the vehicle off the ground (with the SRB assist, of course). With such high pressures inside the engine, how do you inject ...
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How could aerodynamic forces break up the Challenger orbiter?

Wikipedia's explanation of the sequence of events: The O-ring failure caused a breach in the SRB joint it sealed, allowing pressurized hot gas from within the solid rocket motor to reach the ...
10
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Communication Blackout

All the atmospheric entry missions endure a communication blackout. What parameters except plasma penetration frequency affect the blackout time and how ? Also, Comm Blackout states that space ...
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Is the technology behind the Shuttle's heat-shielding tiles used in any product today?

Many NASA inventions have had subsequent lives in the commercial marketplace. Have the Space Shuttle's heat-shielding tiles also had a second life?
6
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Could Orion repeat any of the Hubble Space Shuttle servicing missions?

I have a distinct feeling that there's some apparent no-go on the question in the title, but currently can't put my finger on it; For the lifting mass to Low Earth Orbit (LEO), let's assume that SLS (...
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Would the Space Shuttle have met the current NASA manned flight standards?

If NASA were to apply the safety standards it is using on the CCtCAP program (Dragon V2 and CST-100 now chosen) would the Space Shuttle have met those standards? I suppose it helps if we are clear on ...
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Shuttle-C: Did we make the right move?

Shuttle, and its cousin Shuttle-C, are now history as the launch pads have been converted for use by other systems. Claims made for the Shuttle-C were that it would have taken 4 years and cost $6 ...
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What range of orbital elements was available for the Space Shuttle?

What range of orbital elements (inclination, apogee, eccenticity) was available for the space shuttle? What range has it really achieved? What were the engineered limits?
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Did some of the Shuttle fuel tanks actually orbit?

In Buzz Aldrin's book Encounter with Tiber, he mentions that some of the Space Shuttle's fuel tanks actually made it to orbit. Did this actually happen, and if so, for how long did they stay in orbit, ...
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Have SRBs or SSMEs ever launched without a space shuttle?

It seems to me that the April 12, 1981 launch of Columbia (STS-1) was the manned spaceflight with the most untested hardware of any manned space launch. Even the Vostok and Mercury launch systems had ...
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Why did NASA discontinue use of the MMU?

One of the comments on this recent question touched on the use of the Manned Maneuvering Unit. It seemed like a good idea at the time: a system that would allow astronauts to do EVA without being ...
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Do NASA currently (early 2014) have any development projects for a better space ship?

Is NASA developing a new generation os human transportation ship, or are they doing any kind of research and/or development which final aim is to invent a new space ship model? If I know well, NASA ...
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Is there any reason why American spacesuits color changed over years?

From Mercury silver suits to orange Space Shuttle ones, color of space suits have changed over years. Is there any reason for it?
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Can I drink the water from the plumes of SSME?

Shuttle's SSME uses cryogenic Hydrogen(LHX) and Oxygen(LOX) as their propellent to give hot water vapour. If I somehow manage to get the exhaust plume and condense it to liquid, Can I drink it ...
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What were the differences between Space Shuttle's and Buran's reentry guidance?

Assuming unpowered flight, what were the significant differences between the STS orbiter and the Buran in: re-entry trajectory? re-entry guidance? navigation during re-entry (inputs and algorithms - ...
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Were any changes made to the composition of the Shuttle's thermal protection tiles over the lifetime of the program?

One of the main components of the Space Shuttle's thermal protection system for reentry was the layer of tiles on the outside of the orbiter. What, if any, changes were made to the composition of ...