PROP_DESIGN is open source, public domain, aircraft propeller design software. PROP_DESIGN can also be used to design products similar to aircraft propellers:
Besides traditional aircraft, PROP_DESIGN can also aid the design of:
PROP_DESIGN allows for the design of unducted or ducted aircraft propellers with straight or swept blades and constant or elliptical chord distributions. PROP_DESIGN can be used for all altitudes covered by the U.S. Standard Atmosphere of 1976. Efficiencies of approx. 90% are easily attained, even for effective velocities as high as Mach .85. Below are some other unique features of PROP_DESIGN:
In the past, aircraft propellers have also been called airscrews. This is due to the fact that, aircraft propellers work their way through air, in a manner similar to how screws work their way through solids. This does not help to solve the mathematics of aircraft propeller design and analysis. However, it is a simple way of understanding how aircraft propellers function.