Best Engine Out Speeds

Question 1

What is Vyse? What is Vxse? In what situation would you use Vxse instead of Vyse?

Answer 1

Y = rate of climb
X = angle of climb
*you’d only use Vxse if you had an obstacle to clear in a fixed distance (not time period)

Question 2

How should the aircraft be configured to achieve best performance at Vyse?

Answer 2

• clean (flaps / gear up)
• max power (prop 2000 RPM and Tq 2230 ft-lbs.)
• FLC / deck angle 121

Question 3

What is meant by Vmca? What is Vmca in this aircraft?

Answer 3

Vmca is defined as the minimum airspeed at which the pilot can maintain directional control.

Vmca:
- (clean) 91 kias
- (app flaps) 88 kias
- (full flaps) 78 kias

Question 4

What is meant by Vsse? What is Vsse in this aircraft?

Answer 4

117 kias

Question 5

Under what conditions is Vmca derived?

Answer 5

• Critical Engine Inoperative (Propeller Windmilling / not feathered)
• Operating Engine(s) at Takeoff or Maximum Power (*simulate the highest yawing moment from the operating engine(s).)
• Most Unfavorable Weight and CG
• Flaps and Landing Gear in Takeoff Configuration
• Bank Angle Limit
• Rudder Input Limit
• Maintaining a Controllable Heading