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A comment on SpaceX Has Pinpointed the Problem That Caused the Falcon9 to Crash Land. Parent comment

Re:SpaceX Has Pinpointed the Problem That Caused the Falcon9... by TeMPOraL on Thursday January 15, 2015 @09:35PM (#8896962)
Pumps and pipes. With an open system, you don't need to recompress the fluid and move it back, and from what I read, that hardware weights a lot.
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Re:SpaceX Has Pinpointed the Problem That Caused the Falcon9... by toomuchtodo on Thursday January 15, 2015 @10:56PM (#8897189)
Correct! Instead of using compressor(s) and recirculation plumbing, you're using an accumulator [1]. Weight and complexity savings.

[1] http://en.wikipedia.org/wiki/Hydraulic_accumulator

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Re:SpaceX Has Pinpointed the Problem That Caused the Falcon9... by bdonlan on Thursday January 15, 2015 @09:50PM (#8897013)
Not to mention the power supply - what's going to run the pumps when the engines are shut off?
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