Krauss TSR-1
Gyrocopter
Kokkola KO-04 Super Upstart
In 1968 the Kokkola Brothers, Kalevi and Seppo, designed the KO-04 Super Upstart autogiro or gyrocopter with rotor-tip thrusters for increased take-off performance. The plane was registered OH-XYY (Serial number 1) during 1969 – 1976, and after that it came in airworthy condition to the Finnish Aviation Museum. The plane was donated to the museum’s collection in the end of the 1990’s.
Koch Tandem Special
Gyrocopter.
KAI KhAI-24
The KhAI-24 autogyro was built by the Kharkov Aviation Institute in the mid-1960s. Its fuselage resembled that of a conventional light aircraft with a tandem two-seat cabin, twin tail fins and a 115hp four-cylinder in-line inverted air-cooled M-332 engine in the nose. It was fitted with a fixed tricycle undercarriage and a three-blade main rotor. There is no indication that more than the single prototype was ever built.
Engine: M-332, 115hp
Top speed: 150km/h
Range: 250km
Ken Brock KB-3
First flown in 1983, the KB-3 conforms to Pt 103 as a homebuilt.
The KB-3 was sold in sub-kits. Price may vary with options, but the average is $12,500 in 2001.
Plans
2001 Plans for the Rotax 582-powered KB-3: $125
Engine: 64 hp Rotax 582cc.
Prop: Ground adjustable 60”.
Empty wt. lbs: 250
Max wt. lbs: 600
Rotor blades: 22’ x 7” Brock riveted aluminium, adjustable hub.
Disk area: 380 sq.ft.
Min speed: 18-20 mph.
Cruise: 60 mph.
Top speed: 63 mph.
Range: 100 sm.
Fuel cap: 5 USG.
ROC: 700 fpm.
Service ceiling: 12,000 ft.
Empty wt: 250 lbs.
Useful load: 350 lbs.
Gross wt: 600 lbs.
Width: 5’.
Height: 7’7”.
Length: 11’3”.
Seats: 1.
Engine: Rotax 532
Max speed mph: 63
Cruise mph: 45 Seats: 1
Engine: Rotax 582, 64 hp
Rotor span: 6.70 m
MAUW: 271 kg
Empty weight: 113 kg
Fuel capacity: 34 lt
Max speed: 150 kph
Cruise speed: 115 kph
Minimum speed: 35 kph
Climb rate: 6 m/s
Seats: 1
Fuel consumption: 18 lt/hr
Plan price (1998): $125
Kit price (1998): $11,000
Ken Brock KB-2 Gyroplane
First flown in 1980, the KB-2 Gyroplane has quite a few features that distinguish it from other similar aircraft. These include: an aircraft-type joystick for con¬trol; its fuel tank seat which is molded from polyurethane to save on weight and add to the clean-looking design; its choice of rotor blades and its wheels. Construction has been simplified by packaging into seven separate kits (airframe, landing gear, rotor head, rotor blades, rotor hub, joystick, rudder/horizontal stabilizer and an optional kit for a prefab metal tail). Engine: 72 or 90 hp McCulloch, VW, or similar.
The KB-2 was sold in sub-kits. Price may vary with options, but the average is $12,500 in 2001.
Plans
2001 Plans for the McCulloch-powered KB-2: $125
2001 Plans for the Volkswagon-powered KB-2: $135
Engine: McCulloch, 90 hp.
Rotor blades: 22’ x 7” Brock riveted aluminium, adjustable hub.
Prop: Brock 48” x 18-20” wood fixed pitch.
Speed max: 95 mph.
Cruise: 70 mph.
Range: 150 sm.
ROC: 1200 fpm.
Take-off dist: 200 ft.
Landing dist: 15 ft.
Service ceiling: 12,000 ft.
Fuel cap: 9 USG.
Weight empty: 240 lbs.
Gross: 650 lbs.
Height: 7 ft.
Length: 12 ft.
Disk span: 22 ft.
Disk area: 380 sq.ft.
Seats: 1.
Landing gear: nose wheel.
Ken Brock Manufacturing
1995-7: 11852 Western Ave, Stanton, CA 90680, USA.
Ken Brock died in an aircraft accident on 19 October 2001.
Ul, gyrocopter, and para-glider builder
Kellett KH-17A
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.
Kellett O-60
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
Kellett XR-3
Autogyro.
Year: 1939.
Seats: 2.
Engine: Jacobs L4MA7, 225 hp.
Gross wt: 2250 lbs.
Rotor dia: 40 ft.
No of blades: 3.
All Aero 