12.04.2009, 08:49
I know quite a bit about gas turbine engines, and believe me that old P-80 engine did have no such thing as Mechanical Fuel Controls or Compressor stall protection devices like Variable stator vanes or bleed valves.
If the pilot was being impatient\cocky with the throttle you'd either spew too much fuel into the combustion chamber, causing a rapid expansion of gases and a higher pressure in the combustion chamber than the compressor discharge pressure. This could lead to reverse airflow in the compressor and a horrible stall with a resulting flame-out.
The other way around, if you ease down the throttle too quickly you can risk that the airflow is too high through the combustion chamber to maintain a continuous ignition of the reduced fuel vapor, so then you'll just end up with another flame out
I have never flamed out the p-80 unless forgetting about these simple rules.
Also in reality, a high angle of attack could cause turbulent airflow at the engine air intake\inlet which in turn could also stall the compressor
If the pilot was being impatient\cocky with the throttle you'd either spew too much fuel into the combustion chamber, causing a rapid expansion of gases and a higher pressure in the combustion chamber than the compressor discharge pressure. This could lead to reverse airflow in the compressor and a horrible stall with a resulting flame-out.
The other way around, if you ease down the throttle too quickly you can risk that the airflow is too high through the combustion chamber to maintain a continuous ignition of the reduced fuel vapor, so then you'll just end up with another flame out
I have never flamed out the p-80 unless forgetting about these simple rules.
Also in reality, a high angle of attack could cause turbulent airflow at the engine air intake\inlet which in turn could also stall the compressor