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The Helicycle helicopter is the first experimental helicopter kit in mass-production to be powered by a turbine engine, the military surplus Solar T62-T32, capable of producing 150 shaft horsepower. The engine is limited to 95 horsepower due to torque limits on the main gearbox and rotor system.
The Piasecki X-49 "SpeedHawk" is an American four-bladed, twin-engined experimental high-speed compound helicopter developed by Piasecki Aircraft.The X-49A is based on the airframe of a Sikorsky YSH-60F Seahawk, but utilizes Piasecki's proprietary vectored thrust ducted propeller (VTDP) design and includes the addition of lifting wings.
Derived from an original design by B.J. Schramm, the Schramm Javelin evolved into the Schramm Scorpion, both of which were developed by the Schramm Aircraft Company.A new company, RotorWay Aircraft Inc., was formed to market and produce plans and kits for the Scorpion, described as a production version of the earlier Javelin. [1]
They can be more challenging to build, requiring metal-cutting, metal-shaping, and riveting if building from plans. "Quick-build" kits are available which have the cutting, shaping, and hole-drilling mostly done, requiring only finishing and assembly. Such kits are also available for the other types of aircraft construction, especially composite.
The prototype of the one-man open framework homebuilt helicopter powered by a 34 hp (25 kW) Triumph motorcycle engine. Hobbycopter 101 Production version of the XH-1 offered as a kit for $900, or as plans for $35 to homebuilders. Hobbycopter 102 Strengthened Model 101 with 34 hp (25 kW) Triumph and a fibre-glass cockpit enclosure.
Plans available (2015) The GP-4 is an experimental aircraft designed to fly cross country with two passengers 1,100 mi (1,770 km) at 240 mph (386 km/h). [ 1 ] Aircraft Spruce & Specialty Co has the rights to distribute the kits for the aircraft, while the plans are distributed by Osprey Aircraft .
The company was founded to produce plans and kits for the Sonerai I aircraft. The Sonerai I was specially built to be used as a Formula V Air Racing racer. The follow-on aircraft, the Sonerai II was a two-seat modification that made the aircraft more marketable for sport piloting. [2] In 1982, the company marketed its Moni motor glider.
The prototype attended the 1969 Experimental Aircraft Association convention at Rockford, Illinois, winning the Outstanding Design Award. Currently the rights to the Smyth Sidewinder are held by EU-Wish, which continues to market the design. [7] 290 sets of plans had been sold by 1972, with at least 46 examples registered and flying. [8]