Random Flashcards
What is CFL?
the greater of the total runway distances required to accelerate on all engines, experience a failure of the most critical engine (Vcef) from the standpoint of control of the airplace, and then to either continue the takeoff to lift-off or stop
What is Vcef?
accelerate-stop speed that equates to CFL
What is minimum runway length for normal takeoff?
Critical field length
For peace-time, do not use runways less than ______ feet
3,000
What is the acceleration distance based on?
based on all engines set at the computed takeoff power, not exceeding 19,600 inch-pounds of torque
Bleeds closed decreases takeoff factor by ____
0.1
What is Vr?
Refusal speed. Based on runway available and is defined as the max speed to which the airplane can accelerate with engines at takeoff power and then stop within the remainder of the runway available, with two engines (symmetrical power) in reverse, one engine in ground idle, one propeller windmilling and max anti-skid braking
Vrot (rotation speed) is set to ___ knots below take-off speed
5 knots
Why is Vrot set to 5 knots below Vto?
Allows for the airplane to have sufficient acceleration capability to achieve Vto over the time interval during which is is rotated to its pitch attitude/angle-of-attach required for take-off
Calculate Vrot as 5 KIAS less than the take-off speed or ______, whichever is higher
Vmca
What is Vmcg?
the minimum airspeed at which the airplane may lose an outboard engine during the takeoff ground run and still maintain directional control
What is Vmcg based on?
- No 1 engine inoperative with the propeller windmilling on NTS
- Maximum power on all operating engines
- Zero bleed (good for any bleed condition)
- Flaps 50 percent with 3,000 PSI rudder boost
- Max available rudder deflection limited by 180-pound rudder pedal force or maximum rudder surface deflection, whichever occurs first
- Max deviation from runway center line of 30 feet
- Maintain wings level
When is Vmcg not applicable?
after a takeoff is aborted and asymmetrical power conditions no longer exist
When is Vmcg applicable?
When a takeoff is continued after a critical engine failure. (Vmcg <= Vr < Vto)
When must the acceleration check be done?
When Vr is lower than Vto