Ullage used in a sentence

Ullage in a sentence as a noun

What you are referring to is an ullage burn.

I didn't know about ullage motors, thanks for the link.

It was on a helium ullage line, after all.

The word to google for is "ullage"There's been a lot of creative solutions.

If they are going to be draining the fuel using only the ullage thrust, it will take more than a slight nudge.

Bearing in mind that the ullage motors need to be of a type that won't suffer from ullage problems.

Usually when you ignite an engine on orbit a short kick of ullage trusters is enough.

Yes but ullage thrusters would have to fire continuousky for the duration of the transfer.

First, the two-stage pump removes the free air from the adsorbent bed and returns it to the cabin, reducing oxygen ullage.

Commonly this task is accomplished by "ullage motors" which fire to settle the fuel before primary ignition[1].

> Supposedly the cryogenic Saturn V third stage simply vented its boiloff to the rearThis occured after the ullage burn.

If you are using ullage motors and not internal bladders, you have to keep producing the micro-trust for the whole transfer duration.

Also of note, in zero-gravity the ullage space must be forced to the opposite end of the tank before ignition so the fuel is at the intakes.

Hot staging is advantageous as you don't need extra ullage motors to deal with propellant being in the wrong place inside the tanks in microgravity.

If you're interested in learning more about this kind of thing, you want to look stuff related to "ullage".Fun fact: it doesn't actually take that much time without forwards acceleration for ullage to become an issue.

If you want realistic fuel and engine behavior, you should try with RealismOverhaul mod, where ullage and engine restarts are critical parameters during vehicle design and mission planning.