Principles Of Flight - One Engine Inoperative Flashcards
What two factors effect the amount of yaw in OEI operations?
Total thrust produced by the engine
Distance from the center of gravity where the thrust is produced
What factors cause yaw and roll when an engine fails
Asymmetrical thrust and asymmetrical lift
Which direction will an airplane yaw after an engine failure
Toward the inoperative engine
What is the primary and secondary causes for yaw with OEI
Primary is asymmetrical thrust
Secondary is drag from the windmilling propeller
Which direction will an airplane roll during
Toward the inoperative engine
What two factors cause the rolling moment during OEI operations
- The initial yaw produces roll
2. The accelerated slip stream behind the operative engine produces more lift
Why does the initial yaw from an engine failure produce roll
Yaw causes one wing to accelerate and the other to decelerate
The accelerated wing creates more lift
What acronym can you use for engine failure in flight
CPDIVE
Control Power Drag Identify Verify Evaluate
How can you help maintain control of the airplane (CPDIVE)
Stop the yaw
Stop the roll
Set pitch for Vyse
What is VTF
Vertical Tail Force
Rudder pedal creates vertical tail force to counter asymmetrical yaw from OEI
Which direction should you put aileron to counter roll
Toward the rudder
How do you achieve zero side slip
By stopping the yaw and adding 2-3 degrees of bank toward the rudder pressure
What should you do if more than 2-3 degrees of aileron is required to stop the roll?
Add more rudder
What order should you move the engine controls forward (CPDIVE)
Mixture
Prop
Throttle
What is the procedure to reduce drag in OEI (CPDIVE)
Retract flaps and landing gear and adjust cowl flaps as necessary
How can you identify which engine has failed (CPDIVE)
Dead foot dead engine
Left foot applying pressure
Right foot dead
Right engine dead
Once identifying the failed engine via dead food dead engine, how can you verify it (CPDIVE)
By reducing the throttle and ensuring there is no change of noise or yaw.
What items should be evaluated for OEI (CPDIVE)
If the prop should be feathered immediately
How much time and altitude is remaining
What is the airplanes performance
During OEI landings what is the priority
Fly the airplane
Airworthiness regulations require lights twins to have what kind of singe-engine climb performance
No performance is required
What determines climb performance
Excess power
How much excess power available is lost during OEI operations
Approximately 80%
What are 6 ways to optimize OEI performance
- Establish 0 side slip
- Maintain Vyse
- Maintain minimum bank angle while turning
- Retract landing gear and flaps
- Feather inop propeller
- Adjust cowl flaps
What is side-slip
Anytime the relative wind does not align with the fuselage
What are 3 possible side slip conditions
- Side slip toward inoperative engine
- Side slip to operative engine
- Zero side slip
What signs indicate the airplane is not in a side slip?
- The yaw string is straight up
- The inclinometer is deflected half width toward the operating engine
- Performance is maximize
What factors effecting Vmc does the pilot have control over?
Power on operating engine
Side slip
Rudder and aileron positions
Propeller condition
