Aeroplane Construction and Operation

by John B. Rathbun

A body built up in tubular form out of three-ply wood, thus virtually forming a single piece body.

Single seater.

Single valve Gnome motor.

Hot air balloon.

An aeroplane having the main lifting surface divided into a number of parts.

N

NACELLE.

The body or fuselage of an aeroplane or dirigible. It generally signifies a dirigible body. The short fuselage of a pusher type is often called the nacelle.

See INHERENT STABILITY.

Ailerons making a negative angle with the wind when in normal flight. The negative incidence of the ailerons is decreased on the low side and increased on the high side so that the high side is pushed down. This decreases the drag on the lower, inner wing in making a turn, and therefore does not tend to stall the machine.