F-108 Rapier Question

[KJ_Lesnick]

Martinbayer

Is there any way to make guesstimates based on known thrust figures and engine capabilities?

[martinbayer]

Is there any way to make guesstimates based on known thrust figures and engine capabilities?

Depends on what variables you have to work with, like engine thrust and fuel flow. I'd recommend to start by doing a search for "specific fuel consumption" for the engine(s) you're interested in. For example, YJ93 values are given here (although it doesn't provide the corresponding flight speed, since SFC is typically a function of velocity): http://en.wikipedia.org/wiki/General_Electric_YJ93

Martin

[McColm]

Wow, that was a deep debate. What was the conclusion?

[martinbayer]

Good question. Maybe KJ is still working out the math.

Martin

[KJ_Lesnick]

There are variables I cannot account for... I can make up stuff (I'd probably use the J79 as a reference point)