Aerobatic Propellers An aerobatic airplane has either a fixed-pitch or constant-speed propeller. The pitch of the blades is the angle at which they "bite" into the air. On airplanes with a fixed ...

An aerobatic airplane has either a fixed-pitch or constant-speed propeller. The pitch of the blades is the angle at which they “bite” into the air. On airplanes with a fixed-pitch propeller ...

In June 1957, the G-159 design was finalized, and Grumman started selling it for $10,000. On August 14, 1958, the first ...