The 1949 120 Paraplane I N9060H test-bed was used by Office of Naval Research in STOL evaluation. First flown by Leo Riley, the Paraplane featured an inverted “Vacucell” gull-wing with an air scoop below and vacuum-slots on top—operated by a hand-crank in the cockpit—enabled slow flight at 19mph, take-off in 100′, a 30° climb angle and 40° descent angle, and was spin- and stall-proof.
A modified Paraplane II showed up in 1949 with a 22’6″ wing and was capable of nearly hovering.
Engine: Continental A-90, 90hp
Wingspan: 20’5″
Length: 22’0″
Useful load (prototype): 455 lb
Max speed: 120 mph
Cruse speed: 30-120 mph
Stall: 28 mph
Seats: 1
All Aero 