Questions tagged [ullage]
Questions regarding the management and nature of gas is tanks otherwise filled with liquids.
18
questions
9
votes
2
answers
604
views
Why did the ullage motors for the S-IVB TLI burn shut down prior to S-IVB ignition?
I found "Technical Information Summary AS-501: Apollo Saturn V Flight Vehicle" when looking for info about the Saturn V staging sequence. It contains a nice diagram on pages 14-16 showing the various ...
- 1,079
1
vote
3
answers
3k
views
What do the terms milli-g and microgravity mean? How are they used?
I've seen the terms "milli-g" acceleration and microgravity in many questions and answers here, within the context of spaceflight.
Does milli-g refer to accelerations between 0.001 $g_0$ and 1 $g_0$, ...
- 149k
2
votes
1
answer
512
views
How might an internal combustion engine generate substantial external thrust?
This answer mentions the proposed use of an internal combustion engine (ICE) in ULA's ACES upper stage to extract energy from LH2/LOX in multiple forms for multiple uses, which is described further in ...
- 149k