If rocket engines only need fuel and oxidizer, then why there are so many pipe lines on the engines?
What is a "Major Component Failure" referred to in news reports about the unsuccessful Space Launch System core stage test firing?
Which STS mission raised the normal engine throttle above 100%, and what change to the SSME made that possible?
From which NASA publication originates/where can I find a higher resolution version of this SSME flow diagram?
Why was the reusability of the SSMEs so poor, and why was this considered acceptable given their purpose to launch a reusable vehicle?
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