Principles of Flight- Engine Inoperative

Question 1

What is the definition of Vmc?

Answer 1

the speed at which, when the critical engine is suddenly made inoperative, it is possible to maintain directional control

Question 2

What is the definition of a critical engine?

Answer 2

the engine whose failure would most adversely affect the performance or handling qualities of an aircraft

Question 3

How do you determine a critical engine?

Answer 3

PAST: P-factor(Yaw), Accelerated Slipstream(Roll and pitch), Spiralling slipstream(Yaw), Torque Effect(Roll).

Question 4

How does a manufacturer establish a Vmc speed?

Answer 4

FAR 25.149 SMACFUM
Standard Day: 29.92, 15, Sea Level
Max Power
Aft CG
Critical Engine inop with prop windmilling
Flaps/Trim set for takeoff and gear up
Up to 5 degrees bank into operating engine
Most unfavorable weight

Question 5

What is a Zero Slideslip Condition?

Answer 5

2-5 Degrees bank into operating engine, Split the Ball towards operating engine. By doing this you will be presenting the smallest profile to the relative wind, producing the least amount of drag, and getting the best performance.