The power to maintain an even keel in flight.

A runway to enable an aeroplane to leave the ground.

Resistance offered by planes or wings.

The difference between the distance actually travelled by a propeller and that measured by the pitch.

A gliding movement without apparent effort.

The extent of planes measured on one side only.

Extent of wings or planes which lend support to an aeroplane.

T

Tail.

The plane or planes, both horizontal and vertical, carried behind the main planes.