Barry explain how you can get a increase in Thrust using diesel fuel.. Am I missing something here? Doesn't the RPM of the turbine determine thrust? If your ECU settings stay the same for the MAX RPM, then where does the increase in trust come from when using diesel fuel over JET A?
Dennis
Great Q Dennis, and if the above explanation doesn't do it for you then please let me try, in simpler terms that help me, anyway: For recips it's intake, compression, power, exhaust. Turbines= Suck, squeeze, bang, blow.
The thrust isn't "made", if u will, by the rpm.
Rpm does the suck and squeeze part (nit pickers hold ur piece, we are NOT talking about high bypass engines),
but the amount of thrust can be enhanced by a "higher calorie" fuel, which gives more bang and blow at the same level of suck and squeeze (RPM). Diesel fuel has more calories than Kero and JetA, and more energy is released when it's burned. That extra energy makes for more bang, which makes more blow(aka Thrust).
Hope that helped?
Don.