Designed by Dudley R. Kelly, the Kelly was was available as plans only. The wings are detachable.
Engine: Lycoming O-235, 115 hp.
Height: 7.8 ft.
Length: 19.2 ft.
Wing span: 26.3 ft.
Wing area: 230 sq.ft.
Speed max: 105 mph.
Cruise: 90 mph.
Range: 270 sm.
Stall: 55 mph.
ROC: 800 fpm.
Take-off dist: 400 ft.
Landing dist: 600 ft.
HP range: 100-125.
Fuel cap: 24 USG.
Weight empty: 950 lbs.
Gross: 1500 lbs.
Seats: 2.
Landing gear: tail wheel.
Designed and built as a formula 1 racer, the debut was at the 1995 Reno Races.
Top speed: 300 mph
Cruise: 205 mph
Stall: 60 mph
Range: 400 sm
Rate of climb: 2000 fpm
Takeoff dist: 600 ft
Landing dist: 1200 ft
Engine: Continental O-200A, 100 hp
HP range: 85-125
Fuel capacity: 13 USG
Empty weight: 500 lb
Gross weight: 800 lb
Height: 4 ft
Length: 17 ft
Wing span: 19.3 ft
Wing area: 67.5 sq.ft
Seats: 1
Landing gear: tailwheel
Experimental conversion of a standard Kellett KD-IB Autgiro into a convertiplane, for the U.S. Navy. Chief external changes are addition of wings and two wing-mounied engines. Was due to fly in 1955.
Engine: 1 x 275 hp Jacobs and 2 x 140 hp Lycoming
Rotor diameter: 40 ft
Rotors: 3-blade main; 3 propellers
Length (blades folded): 25 ft 11 in
Loaded weight: 3,400 lb
Seats: 1.
In 1954 the first helicopters with rocket-driven rotors were flown; the Kellett KH-15 and Rotor-craft RH-1.
Nicknamed ‘Stable Mable’, the KH-15 has been built for the U.S. Navy to test a new system oft gyro-abilisng cotrols. It flew after only 8 minutes of tethered tests. Power units are tip-mounted hydrogen peroxide rocket motors.
Power: 2 Reaction Motors XLR32 rockets
Rotors: 2-blade tip-powered main rotor and tail rotor
Rotor diameter: 18 ft
Loaded weight: 644 lb
Seats: 1
The Kellett O-60 was built and tested as an observation aircraft for the US Army in 1942 while the helicopter was still in development. The aircraft had a free-turning 43 ft 2 in rotor which provided lift in place of a conventional wing. A 285 horsepower radial engine turning a two-blade propeller gave the O-60 its forward thrust.
The two-place YO-60 was designed by Richard O. Prewitt and could do jump take-offs. The rotor was spun up to about 280 rpm (rotations per minute) at a no-lift angle using the power of the radial engine. When ready for take-off, the pilot would release a clutch mechanism which changed the blade angle to 8 degrees. This caused the aircraft to ‘jump’ about 10 feet into the air. The engine and propeller then pulled the YO-60 into forward flight as the rotor angle was decreased to a normal flight pitch of 3 degrees. The engine was only used to spin the rotor up to flight speeds on the ground, while in flight the rotor was free spinning.
The YO-60 never got past the service test phase. Seven aircraft were built as XO-60 (S/N 42-13604 to 42-13610) with 225 hp radial engines and later re-engined with 285 hp. radials and redesignated YO-60.
YO-60
Engine: Jacobs R-915-3 of 285 hp.
Fuselage length: 20 ft. 9 in.
Fuselage width: 9 ft. 6 in. (at landing gear); 10 ft. at horizontal stabilizer
Height: 10 ft. 3 in.
Rotor diameter: 43 ft. 2 in.
No of blades: 3
Weight: 2,640 lbs. (gross)
Crew: 2
Top speed: 122 mph
Autogyro.
Year: 1939.
Seats: 2.
Engine: Jacobs L4MA7, 225 hp.
Gross wt: 2250 lbs.
Rotor dia: 40 ft.
No of blades: 3.
Autogyro.
Year: 1939.
Seats: 2.
Engine: Jacobs R915-3, 285 hp.
Gross wt: 2400 lbs.
Rotor dia: 40 ft.
No of blades: 3.
Cierva and Pitcairn licensed the Kellett Autogiro Corporation of Philadelphia to build autogiros and the developed Kellett YG-1 of the late 1930s became the US Army’s first rotary-winged aircraft.
Seven YG-1B autogyro were procured by the US army in 1937 for observation duties.
YG-1A
Year: 1936.
Seats: 2.
Engine: Jacobs L4MA7, 225 hp.
Gross wt: 2205 lbs.
Empty wt: 1586 lbs.
Rotor dia: 40 ft.
No of blades: 3.
YG-1B
Year: 1937.
Seats: 2.
Engine: Jacobs L4MA7, 225 hp.
Gross wt: 2400 lbs.
Empty wt: 1617 lbs.
Rotor dia: 40 ft.
No of blades: 3.
Cierva’s C30 series and Pitcairn’s PA-22 and Luscombe-built aluminum body PA-36, and the KD-1 series constructed by Kellett Autogiro Company of Philadelphia were capable of jump take-offs and direct-control without wings.
KD-1
Year: 1935.
Seats: 2.
Engine: Jacobs L4MA7, 225 hp.
Gross wt: 2050 lbs.
Empty wt: 1345 lbs.
Rotor dia: 40 ft.
No of blades: 3.
KD-1A
Seats: 2.
Engine: Jacobs L4M4 seven-cylinder radial
KD-1B
Year: 1939.
Seats: 1.
Engine: Jacobs L4MA7, 2225 hp.
Gross wt: 2295 lbs.
Empty wt: 1670 lbs.
Rotor dia: 40 ft.
No of blades: 3.
Dr.Wynn Laurence LePage designed the first line of autogiros, K-2, K-3, and K-4, establishing Kellet as manufacturer of good performing autogiros.
The K-4 was developed in 1933.
Year: 1934.
Seats: 2.
Engine: Continental R-670, 210 hp.
Gross wt: 2400 lbs.
Empty wt: 1620 lbs.
Rotor dia: 40 ft 6 in.
No of blades: 4.
