A marking post on an aeroplane course.
P
RACE OF A PROPELLER.
The air stream thrown by the propeller.
A motor with the cylinders arranged in radial lines around the crankcase.
The tips are arranged at an angle with the wing so that the span of the trailing edge is greater than that of the leading edge.
Spokes.
An aerofoil in which the trailing edge is given an upward turn.
A downward current of air.
Tank.