Airframe & Engine Flashcards
What windshield is made of
Perspex
Spar, ribs, stringers
See photo
Monoplane
A plane with one set of wings
Stress analysis
Analysis of the components of the airplane to withstand force the airplane is intended to
Strain
The degree by which a material is deformed after a stress
5 stresses on airplane
Tension
Compression
Shear
Torsion
Bending
Semimonocoque
Light framework covered by skin, usually alumunium
Wing structure element that takes up vertical bending
Spars
When parkingnwith wind, how should I position the aircraft
Into the wind
Four strokes of an engine on each cylinder
Intake
Compress
Ignite (power)
Exhaust
Crank shaft
The shaft used to control the piston movements
Camshaft
The shaft used o control the valves
The air fuel mixture valve and exhaust valve
TDC top dead center
When piston is furthest away from crankshaft
BDC bottom deas center
When piston is closest to the crankshaft
Valve leg or valve lead
The delay in which valve opens or closes before /after reaching TDC PR BDC
For example, allowing maximum time for intake as it opens beforce TDC
Valve overlap
When both valves are open
Dual ignition
Two spark plugs per cylinder
Magnetos
The component providing the electrical current to the spark plugs
Magneto distributor
As each cylinder at different stage, the distributor decides which cylinder gets a spark
Otto cycle
four-stroke cycle
The magneto distributor finger moves ____ in every complete four-stroke cycle
Once
To start an engine, aircraft use
Electric starter motor
During engine start, how many magnetors are used?
One, usually left, and is boosted with a coil (read more)
What’s the name of the component that transfers high current during START from battery to starter motor
Solenoid (Not true probably)
Spark advance
Spark occuring slightly before reaching the head of the cylinder (TDC)
Impulse coupling
Magneto. With primary coil and secondary coil, the primary coil shuts off causing a very high voltage spark in the secondary coil.
Generates a high voltage
Retards the ignition timing to to start the engine
Tachometer
RPM indiciator
Hobbs meter
Counts the time from engine start (or battery on)
Diesel benefits
- Cheaper
- Ecofriendlier
- Self igniting (does not need spark plugs, fuel is ignited through compression)
