Saron: Airframes, Engines, Props And Systems Flashcards
For IFR, an altimeter must be calibrated ever ______ months
24
Generally, on a gas turbine engine, the starter turns
The high pressure spool (N2)
In a direct drive turboprop engine what prevents the engine from feathering?
The start locks
EPR engine pressure ratio
The ratio of total exhaust gas pressure to total pressure at the compressor inlet
In a constant speed Hydro Matic propeller system what happens if the oil pressure is lost?
The propeller goes to fine pitch. Associated with piston engines
Generally the pneumatic system of an airplane pressurized air comes from
The high-pressure compressor
In a piston engine with the force-feed method of lubrication the oil
Flows through the hollow crankshaft
In a piston engine the splash method the oil is
Contained in a Reservoir under the engine in which the crankshaft goes
What is the advantage of a slotted trailing edge flap over a split flap?
The slotted flap delays the separation of the boundary layer
In a turbojet engine most of the energy Resulting from combustion chamber will be used to
Drive the compressors
In a turbine engine what percentage of total air is used in the combustion process and what is the correct fuel to air ratio?
30% of air is used for combustion, 70% is used for cooling
The correct fuel/air ratio is 1:15
What is a leading edge slat?
Leading-edge slat a small moveable aerofoil located at the front of the wings leading edge that is intended to prevent the separation of airflow at high angles of attack and increases lift allowing shorter takeoff and preventing stalls
What is a mach trim compensator?
These devices track airspeed and apply up elevator to slow aircraft to avoid mach tuck encounters.
What is N1
Low pressure spool ( compressor and turbine)
