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Acme Aircraft Sierra S-1 Sportplane
Beattie-Fellers S-1 




Acme Sierra N12K at Edwards FTC


Designed by Ron Beattie and Walt Fellers, the 1948 Sierra S-1 Sportplane was built by Acme's Crawford and Keeney. 




One midget racer Sierra Sue built and flown, but never competed (N12K) aka Beattie-Fellers S-1 (Ronald Beattie & Walter Fellers) in 1960. It was sed by Sierradyne in the '60s to test and promote Northrop's and Dr Werner Pfenninger's boundary layer control concepts, although it was never officially a Northrop plane.




It is reported displayed at the Los Angeles Science Museum.




Engine: Continental C-85, 85hp


Wing span: 20' 2"


Length: 18' 0"


Max speed: 200 mph


Empty weight: 590 lb  
Seats: 1


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