Define V1 speed
Takeoff decision speed for jets, turboprops or Transport category aircraft
- Below V1: abort
- V1 and above: continue
Define V2MIN speed
Minimum takeoff safety speed
1.2 x stall speed in takeoff configuration
Define VA speed
Design Maneuvering speed.
The highest speed for abrupt control deflection -- does not allow for multiple large control inputs.
What is VSB (sometimes shown as VABO)?
Maximum speed for Speedbrake (Air-Brake) operation
What is VAC?
Missed Approach Climb speed for flap configuration with critical engine inop (2.1% climb gradiant)
What is VAP?
Approach target speed
What is VB?
Transport category aircraft design speed for maximum gust intensity.
Part 25: Turbulent-air-penetration speed -- will protect up to 66 fps gusts
What is VC?
Design Cruising speed
What is VD?
Design Diving Speed
What is VDEC?
Accelerate/Stop Decision Speed for Multiengine Piston/Turboprops
What is VDF or MDF?
Demonstrated Flight Diving Speed in knots or Mach
What is VEF?
Critical engine failure speed used during certification testing
What is VENR?
Enroute climb speed with critical engine inop.
Accelerate to VENR above 1,500 feet AGL
What is VF?
Design Flap Speed...
Should be the same as VFE
What is VFC or MFC?
Maximum speed for undesirable Flight Characteristics -- knots and Mach
What is VFE?
Maximum Flap-Extended speed
Top of the "white arc"
Highest speed permissible with flaps at a perscribed position
What is VFR?
Flap Retraction Speed -- minimum speed required for flap retraction after takeoff.
What is VFS?
Final Segment speed (take off) with critical engine inop.
Accellerate to VFS at 400 ft AGL.
What is VFTO?
Final Take Off Speed.
End of the takeoff path, enroute configuration with one engine inop.
What is VH?
Maximum speed in level flight with maximum continuous power.
What is VLE?
Maximum Landing Gear Extended speed
What is VLLE?
Maximum Landing Light Extended speed.
What is VLLO?
Maximum Landing Light Operating speed.
What is VLO?
Maximum Landing gear Operating Speed
Maximum speed where landing gear can be extended or retracted.
What is VLOF?
What is VMCA or VMC?
Minimum Control speed with the most critical engine inoperative and out of ground effect.
With airspeed below VMC full rudder will not prevent yaw toward dead engine.
Not constant -- changes with CG and power.
What is VMCG?
Minimum speed to maintain directional control following an engine failure during takeoff -- still on the ground.
What is VMO/MMO?
Maximum Operation limit speed (turbine/jets)
VMO -- lower altitude and in Knots
MMO -- higher altitudes and in Mach
What is VMU?
Minimum Unstick speed. Slowest speed at which an aircraft will become airborne.
What is VNE?
Never Exceed speed -- redline (piston)