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10 Cards in this Set
- Front
- Back
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EGT |
Exhaust gas temp Temp of turbine section must be closely monitored to prevent over heating (ITT, TIT, TOT, TGT) interstage turbine temp, turbine inlet temp, turbine outlet temp, turbine gas temp |
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Torquemeter |
Power output, twisting force applied to the shaft) measures power applied to the shaft calibrated in %, ft lbs or psi |
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N1 indicator |
Rotation of the low pressure compressor. Shown as percent of design rpm After start speed of low pressure compressor is governed by the N1 wheel |
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N2 indicator |
Rotational speed of high pressure compressor Shown in percent of design RPM Governed by N2 turbine wheel |
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Turbine engine operational considerations |
Engine temp limits, foreign object damage, hot start, compressor stall, flame out |
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Turbine temp limits |
Highest temp in any turbine engine occurs at the turbine inlet |
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Thrust variations |
Varies directly with air density Density down thrust down Temp up thrust down |
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Foreign object damage (FOD) |
Due to design of engine ingestion of debris can damage compressor and turbine sections small objects on ramp, ice, birds During pre flight check for nicks caused by FOD |
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Turbine engine hot/hung start |
When EGT exceeds safe limit, caused my too much fuel entering combustion chamber or insufficient turbine rpm Engine fails to accelerate to proper speed after ignition or does not accelerate to idle rpm a hung or false start has occurred. Caused by not enough starting power source or fuel control malfunction |
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O2 with pressurized aircraft |
FL 250- 10 min supply for all occupants FL350- if one pilot at controls must have quick dining mask if cabin air over 14,000 FL 410- one pilot must have mask on |
