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Aviation History
1958
1958 - 0381.PDF
Above and below, Hughes Model 269A. Hughes Tool Company, Aircraft Division Culver City, Calif.Model 269A The Model 269A is a development of the 269, simplified andcleaned up in several respects. It is a two- seater, ultra-light helicopter with a three-blade main rotor, the blades being of metal construction. A Lycoming O-360 engine isinstalled and has been derated from 180 h.p. to 160 h.p. for this particular applica-tion. There is a neat Plexiglas canopy for the pilot and passenger and dual controlsare optional. The 269A is being developed to meet a military requirement, but themakers state that the appeal for a simple, economical, high-performance helicopter ina price class roughly half that of present helicopters has "stimulated a lively interestin civil circles." • Rotor diam., 25ft; empty weight, 890 lb;gross weight, 1,550 lb; max. speed, 90 m.p.h.; cruising speed, 75 m.p.h.; range at cruisingspeed, 150 miles; max. rate of climb, 1,100ft/ min; vertical rate of climb, 400ft/min. Miscellaneous Hughes Projects The Air-craft Division of the Hughes Tool Com- 397 Kaman HU2K-1 pany is actively engaged in all phases ofheavy-lift helicopter research and develop- ment and has operated a research vehicleof the pressure-jet rotor type (XH-17), which has been flown at gross weights of46,000 lb. Design work has been under- taken on other large pressure-jet studies. Kaman Aircraft Corp. Bloomfield,Conn. HOK-1 This twin-rotor helicopter bearsthe makers' designation K-600 and con- tinues in production for the U.S. Navyand Marine Corps. It has twin two-blade intermeshing rotors and twin tail-booms.The engine is a Pratt and Whitney R-1340-28 of 600 h.p., mounted at therear end of the fuselage at an angle of 35 deg. Blade pitch is controlled by servoflaps. In U.S. Marine Corps service HOK-ls are intended for cargo carrying,casualty evacuation, search and rescue, reconnaissance and personnel transport.Normally seats for four are provided. The HUK-1 is a "utility" Navy version.A similar machine is the H-43, being ordered in large numbers as the standardfire/crash-rescue helicopter of the U.S.A.F. The H-43A has an R-1340 engine; theH-43B is turbine-driven (picture below). • Rotor diam., 47ft; max. length, 47ft; grossweight, 5,800 lb (normal); gross weight, 6,800 lb (max.); max. speed, 110 m.p.h.; hover-ing ceiling in ground effect, 12,000ft; normal still-air range, 220 miles. HU2K-1 The photograph on this pagedepicting the forthcoming HU2K-1 utility helicopter shows the very elaborate mock-up which has been constructed for the U.S. Navy. Kaman have received a Navycontract to produce "a prototype quantity" of HU2K-ls powered by the General Elec-tric T58 gas turbine. Features of the HU2K-1 include four-blade main rotorequipped with Kaman "servo flap" control system and a retractable undercarriage. Below, Kaman H-43B (Lycoming T53 development of HOK-1); right, Kellett K-25. Kellett Aircraft Corp. P.O. Box 35, Willow Grove,Pennsylvania. KH-15 This research helicopter datesfrom 1954 and is described as a variable- stability test-bed. It is powered by twoReaction Motors XLR32 hydrogen per- oxide rocket motors, mounted at the tipsof the two-blade rotor. Its principal func- tion, however, is to flight-test a gyro-stabilizing system and to demonstrate positive dynamic stability without loss ofcontrol throughout the speed range. • Rotor diam., 18ft; empty weight, 264 lb;gross weight, 610 lb. K-25 The K-25 is a projected converti-plane powered with a Lycoming XT53-L-1 gas turbine. The two rotors measure32ft 6in diameter and the undercarriage is retractable. (Drawing below.) Laskowitz Helicopter Co. Projected Convertibles One Laskowitzproject—the L15CV—is designed for a Continental Palas turbine and will havea two-blade rotor. A two-seater, this machine will have a maximum speed of215 m.p.h. and a range of about 170 miles. The Model L180CV-1 is a larger machinewith two Westinghouse J34 turbojets. The two-blade rotor has a diameter of 104ft andweight empty is given as 11,970 1b. Up to 21 passengers could be carried, and themaximum speed is estimated as 450 m.p.h. Range is stated to be 270 miles. McDonnell Aircraft Corp. St. Louis 3, Missouri.XV-1 Bearing the makers' works desig- nation Model 82, this experimental con-vertiplane is being jointly developed by the U.S.A.F., the U.S. Army and the McDon-nell Aircraft Corporation. A speed of 200 m.p.h. has been achieved by one of the twoprototypes built. The rotor is driven by
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