fr8mech wrote:As I recall, from training (mx), the JT9 equipped B747 could operate with gasoline for a max of 50 hours. The instructor said that the combustors would be unsalvageable after being used that way.
I want to say there was an adjustment on the fuel control.
Never did it. Never saw it done. Never heard that it was done.
What kind of indications would you see? Probably higher EGT's for a given power setting.
My guess is that any airline faced with that dilemma, especially with the cost of engines and overhaul, would truck in the appropriate amount of fuel before fueling with gasoline.
Starlionblue wrote:I have a feeling that modern turbofans are so super-optimised this would be hard. If nothing else AvGas is much easier to ignite, so you'd have big issues with temperatures, ignition timing and such.
rjsampson wrote:So if a modern, FADEC and automated aircraft like an A320 were to be fueled with AvGas, what do you guys think could happen when the "start" switch is selected? Would a bunch of faults be thrown up? Would the systems allow the engine to start at all?
GalaxyFlyer wrote:I think it would start just fine. Remember, the AvGas wouldn’t flow to the FADEC for some time.
rjsampson wrote:An A320 is fuel critical and lands at the only airport range, a GA airport with only AvGas. Tankering in Jet-A isn't an option, and the aircraft must depart with a tank of AvGas.
By most accounts, this is highly feasible.
But how would the engine react? Performance? FADEC? What sorts of changes/anomalies could you conjecture would show up on the EICAS? Potential damage?
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