Jet engine burning methane CH4. What is the pressure ratio of the compressor ?

Question

Suppose you have a jet engine of an airplane burning methane CH4.
The compressor inlet is at -70 degrees of Celsius = -94 Fahrenheit and 0,3 bar. The compressor isentropic efficiency is 90%.

I want to know the temperature or the pressure at the end of the compressor (inlet of the cumbustor).

Thank you.

Answer 1

http://www.reference.com/browse/wiki/Turbojet

Talks about compression ratios of 44:1. Fuel will make some difference to burner design but little else in engine.

But just how does one store useful quantities of methane on this aircraft? (Bearing in mind that it is only liquid at -260degC)

Answer 2

you should just try out the problem yourself first, no point posting a problem that you haven't really tried out.