What is N1, N2, EGT and EPR?

What is N1, N2, EGT and EPR?

N1= Low pressure compressor spool or fan rotation speed. Usually expressed as a % of Max N1.

N2= High pressure compressor rotation speed.

EGT= Exhaust gas temperature, indicates the temperature at the first stage of the turbine, which is the most critical temperature in the engine.

EPR= Engine pressure ratio of the inlet to the jet pipe, displayed on the EPR gauge to use as a parameter for setting engine thrust

Describe the take off segments.

Describe the take off segments.

1st segment starts at screen height and finishes at gear retracted.

2nd segment starts when the gear is retracted and finishes when acceleration alt is reached (min. 400ft max 1000ft) speed V2.

3rd segment starts at acceleration alt, minimum 400ft, and finishes when the flaps are retracted.

4th segment starts when the flaps are retracted, MCT is set and finishes at the 1500ft.

What is dihedral?

What is dihedral?

Dihedral is the upward inclinitation of the wing from the root to the tip.

Is carb heat an electrical system?

Is carb heat an electrical system?

No. Carburetor heat uses exhaust air to heat air going into the carburetor. No electrics are involved.

What is windshear?

What is windshear?

Windshear is a change of wind speed and/or direction from place to place, including updraughts and down draughts.

It is ussualy characterized by a strong change over a short distance. Windshear can effect the flight path and airspeed and can be hazardous.

What do the abbreviations TSRA and MIFG mean?

What do the abbreviations TSRA and MIFG mean?

TSRA: Thunderstorm with rain

  • MIFG: Shallow fog

How do you prevent an aircraft reaching Mcrit?

How do you prevent an aircraft reaching Mcrit?

Decreasing speed, by reducing engine power or pitching up.

Which way do jet streams travel?

Which way do jet streams travel?

From West to East

East to West (In Africa during the summer)

What are the advantages of fuel injection vs a carburetor?

What are the advantages of fuel injection vs a carburetor?

Fuel injection provides:

  • Fuel free from vaporization ice

  • Better economy through metered delivery

  • More responsive and efficient engine

  • Less maintenance

What setting would you set the trim to for long range cruise?

What setting would you set the trim to for long range cruise?

Nose up

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