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Model Aircraft Glossary


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V-Tail

Tail consisting of 2 surfaces at an extreme dihedral angle. The elevator and rudder functions are mixed and the fin and rudder can be dispensed with.


Variable Incidence Tailplane

An automatic device that alters the tailplane incidence of a free-flight aircraft in flight to re-trim it after its climb.


Venetian Blind Flaps

Venetian Blind Flaps

See: Flaps.


Venturi

A tube reduced in diameter at its centre. Air flowing through it is speeded up by the change in shape.


VHF

Very High Frequency.

See also: Radio Frequencies.


Vortices

Vortices

Air from the high pressure region under the wing flows to the low pressure region above the wing when generating lift, the result are vortices. This reduces the effective lifting area of the wing and generates drag. If the wing span was very very long the loss due to this flow from bottom to top would be very low and the induced drag very low. This is why high aspect ratio wings are used where low drag and high lift is required e.g. gliders.

Reference: Aerodynamics Glossary - diracdelta.co.uk.



Vought

Vought CorsairArguably perhaps one of the most elegant aircraft of all time in the air is the Vought Corsair.

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