What does VFE mean in UNCLASSIFIED

A velocity flap is a moveable airfoil or spoiler attached to the trailing edge of an aircraft's wing, which can increase drag and reduce lift. This allows the aircraft to descend more quickly than it would if the flaps were not deployed.

Velocity flaps are typically deployed during landing approaches, when the aircraft needs to slow down in order to land safely. The amount of flap used varies from aircraft to aircraft and depends on its weight and other operating conditions.

Deploying a velocity flap increases drag and reduces lift, which causes the aircraft to descend more quickly than it would with the flaps not deployed. It also increases stability by decreasing pitching movements of the wings while in flight.

Yes, although they are minimal. If too much force is placed on the flap during deployment or if it is in poor condition, it could cause an imbalance in air flow over the wings that may result in turbulence and loss of control momentarily. In addition, severe stall characteristics may be encountered when flying at high angles of attack with high amounts of flap extended.

VFE stands for "velocity flaps extended," which means that all movable flight surfaces have been extended as far as applicable for maximum drag so that descent rates can be increased during landing approaches.

Using VFE during landing approaches increases response times by providing more drag on descent, so that pilots can slow down their rate of descent quickly and accurately for safe touchdown.

No, VFE can also be used during emergency situations such as missed approach procedures where extra drag may be needed to slow down or turn quickly in order to avoid obstacles.

Pilots should consult their aircraft's operations manual for guidance on specific speeds at which VFE should or should not be activated--but generally speaking, deploying your flaps before reaching approximately 70% of your reference speed (VREF) is recommended.

Yes - errors such as excessive force being applied or jammed flaps due to improper operation are possible when deploying or retracting velocity flaps. Pilots should always exercise caution while operating these devices and pay close attention to ensure everything looks normal.