Need for light weight adjustable pitch propeller for use on small horsepowered airplanes led Freedman-Burnham Engineering Co, initially into development of light, inexpensive unit which could be installed on 40 to 50-hp engines and could be adjusted to meet various enginepropeller combinations desired in this field.
Freedman-Burnham propeller
Aero Digest
Aero Digest ; 34 , n 6
1939
2 pages
Aufsatz (Zeitschrift)
Englisch
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