Definitions Flashcards
Definition of V1:
• Means the maximum speed in the takeoff at which the pilot must take the first action (eg. Apply brakes, reduce thrust, deploy speed brakes) to stop the aircraft within the accelerate stop distance available; and
• Also means the minimum speed in the takeoff, following the failure of the critical engine at VEF at which the pilot can continue the takeoff and achieve the required height above the takeoff surface within the distance available.
• Must be:
o Greater than or equal to VMCG
o Less than or equal to VR
o Less than or equal to VMBE
VR is never less than
- V1
* 1.05 VMCA
Definition of V2:
• The airspeed at which the aircraft complies with those handling criteria associated with the climb after takeoff and the target speed to be attained at the 35’ screen height, assuming recognition of an engine failure at or after V1 and used to the point where acceleration to flap retraction speed is initiated.
• Must be:
o Greater than or equal to 1.2 VS
o Greater than or equal to 1.1 VMCA
Definition of VMCA:
- The minimum airspeed at which, when sudden and complete failure of the critical engine occurs at that speed, it is possible to recover the airplane with that engine still inoperative and maintain it in straight flight at that speed, either with zero yaw or with an angle of bank not in excess of 5°.
- Must be greater than or equal to 1.2VS (with undercarriage retracted and flaps in takeoff position)
Definition of VMCG:
• Is the minimum speed on the ground during the take off run, at which it is possible to recover control of the aircraft with the use of primary aerodynamic controls and the takeoff can be continued safely, when the critical engine suddenly becomes inoperative, with the remaining engines at takeoff thrust.
Definition of VA:
• Design maneuvering speed, the maximum speed at which application of full available rudder, aileron or elevator will not overstress the aircraft.
