I am having difficulty in finding an answer to this question....
I have seacrhed for it here but I find experts conflicting answers and in the process I have confused myself!
1. On the take off roll does EPR decrease or increase...and why ?
I think it increases because a jet depends on speed, temp and pressure but reading the tech forum search threads some people say increase and others say it decreases. The best one I have heard is that it decreases but due to ram effect thrust increases Please could someone explain to this piston pilot why? As I thought EPR is a measure of a jet engines power being developed. So this would appear to me a bit conflicting.
the next few I need a little assistance....
2.What are the effects of compressibilty - how do I answer this one?
3.what does cost index mean in an aircraft - does this mean how much fuel you are allowed to burn?
4.Could anyone tell me how an INS finds true north - Gyrocompassing?
5.What effects AoA at the stall - I didn't think that AOA could be effected at the stall only the speed
I have found answers to most of my questions but these residual ones have appeared!
Thanks Dynamite