Vmc 12 Factors

Question 1

12 Factors

Answer 1

1 Weight @ most unfavorable

2 Aft Legal CG

3 Out of ground effect

4 Gear Up

5 Critical Engine Windmilling

6 Max T.O. Power

7 Standard Day-Sea Level

8 Flaps/Cowl set for T.O.

9 Bank up to 5 degrees

10 Rudder Pressure full or 150 lbs (whichever first)

11 Rudder Trimmed for T.O.

12 recover within 20 degrees

Question 2

Weight @ most unfavorable

Answer 2

Vmc increases as weight decreases. Good for performance

Question 3

Aft Legal CG

Answer 3

Vmc decreases as CG moves farther forward. Good for performance

Question 4

Out of ground effect

Answer 4

Increases Vmc (more induced drag once out of ground effect). Bad for performance

Question 5

Gear up

Answer 5

Vmc increases with gear up, as gear down stabilizes by the Keel effect. Good for performance

Question 6

Critical Engine Windmilling

Answer 6

Increases Vmc (more drag). Bad for performance

Question 7

Max T.O. Power

Answer 7

Max power increases Vmc, as the yawing force is greater. Good for performance

Question 8

Standard Day at Sea Level

Answer 8

As DA increases, Vmc decreases.

Question 9

Flaps/Cowl Set for T.O.

Answer 9

Flaps extended will decrease Vmc (Keel). Flaps set for TO is good for performance, Cowl set for TO is bad for it

Question 10

Bank up to 5 degrees toward good engine

Answer 10

As horizontal component of lift increases, VMC decreases.

Question 11

Rudder pressure

Answer 11

Specification

Question 12

Trimmed for T.O.

Answer 12

Safety specification

Question 13

Recover within 20 degrees

Answer 13

Specification