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Aviation History
1961
1961 - 0629.PDF
639 FLIGHT,II Mav 1961 r, " X-/8 X». i Allison YT40-A-14 engines each of5 r;SO h.p. drive contra-rotating propellers which for,take-off function in the manner ofheicopter rotors. At low forward speeds control in pitch is provided by air ducts atth; tail fed by a Westinghouse J34 turbojet. 9 Span, 48ft: gross weight. 33.0001b; maxspeed. 250 m.p.h. Hughes Tool Company Culver City, CaliforniaModel 269A The makers claim that this helicopter requires half an hour of main-tenance per flight-hour, uses 8-10 US gal of fuel per flight-hour, and gives at leastl,000hr life for all wearing parts in all major components. The Lycoming O-360 engineof 180 h.p. is installed beneath the two seats, and a vee-belt drive eliminates the need for aclutch, • Rotor diam, 25ft; length, 28ft; emptyweight, 8671b; gross weight, 1,5501b; cruising speed. 85 m.p.h.; hovering ceiling in groundeffect, 6,000-13,500ft; range, 200-220 miles. Kaman Aircraft Corporation Bloomfield, ConnecticutH-43B[Huskie Powered with a Lycoming T53 turbinej-of 825 s.h.p., the Huskie isprimarily intended for crash-rescue. It features several well-known Kaman devel-opments, including servo-flaps, intermesh- ing rotors, and in-flight tracking. Servo-flapsare small aileron-like controls mounted behind the rotary wings. They make Hughes Model 269A Hiller E4 possible lighter, more sensitive control aswell as greater stability. The interrneshing rotors permit a symmetrical design inwhich torque is inherently equalized and balanced. All of the power of the enginecan be translated into lift. In-flight tracking is a Kaman-developed system that enablesthe pilot to track either rotor by a simple switch in the cockpit. • Rotor diam, 47ft; length, 47ft; emptyweight, 4.5001b; gross weight, 9,1501b; max speed, 129 m.p.h.; normal still-air range, 250 miles. HU2K-1 Seasprite A naval utility heli-copter powered with a General Electric [58-GE-6 gas turbine of 1,050 s.h.p., theSeasprite has a retractable undercarriage which is intended not only to benefit speedJwt to avoid the possibility of the cable ""ing entangled on rescue operations. InAddition to the crew of two up to 13 pas- S' igers or four stretcher cases can bet'--./ied. The manufacturers have de- v-:--iped their own automatic stabilizatione- iipment and dead-reckoning navigation Below) Kaman Seasprite equipment for this helicopter in order toprovide maximum flexibility in rescue work, all-weather operation and anti-submarinewarfare. When coupled, the autostabiliza- tion equipment and " autonavigator"provide complete hands-off control. • Rotor diam, 44ft; length, 52ft 2in; weightempty, 5,0521b; gross weight. 9,1521b. McDonnell Aircraft Corporation St Louis, Missouri Model 120 The Model 120 is beingdeveloped as a cargo helicopter and is unusual in having three compressors—AiResearch GTC-85-35s—which supply compressed air to pressure jets at the tips ofthe three rotor blades. Flight can be main- tained at gross weight with one engineinoperative. Cargo is carried suspended from a pilot-controlled hook immediatelybelow the rotor and twelve people can be accommodated on '"toboggan seats" whichattach to the cross-member supporting the cockpit and a similar aft member which is apart of a "personnel kit." This kit will contain an enclosure to protect the occu-pants from wind and downwash. The use of turbine compressors as the source of powerpermit take-off within 40sec of the pilot entering the cockpit. 0 Empty weight, 2,4001b; gross weight'6,3001b; range, 80 miles. Piasecki Aircraft Corporation International Airport, Philadelphia 42, Pa VZ-8P Sky Car One of a number ofPiasecki research vehicles, the Sky Car has a 425 h.p. Turbomeca Artouste 2B shaftturbine. The single passenger is seated between two ducted fans arranged intandem. A larger development is being built, powered with two Artouste 2Cs. Sikorsky Aircraft, Division of United Air- craft Corporation Stratford, Connecticut S-60 Skycrane The existing version of theSkycrane—a joint project with the US Navy —is a research and demonstration vehiclepowered by two Pratt & Whitney R-2800 piston engines and having a lifting capacityof five tons. Future aircraft of this family will be turbine-powered and will have liftingcapacities ranging from eight to 40 tons. The makers describe the Skycrane as a"prime mover," the aerial equivalent of a railway locomotive. There is no conven-tional passenger or cargo cabin, but the load is carried externally on a hoist or slingattached to four strong points. The pilot'a seat can be reversed to face rearward and sduplicate set of controls enables him to operate the winch or watch the loading andunloading operations. An experimental "people pod" detachable unit carrying 20persons with "complete lack of vibration" has been developed. • Rotor diam, 72ft; gross weight, 31,2001b. HSS-2 Claimed to be the world"s largestamphibious helicopter, the HSS-2 has a flying-boat hull and is powered by twoGeneral Electric T58-8 turbines of 1,250 s.h.p. each. It is in production for the USNavy as an anti-submarine warfare weapon system and will be the Navy's first all-weather helicopter. The makers state that it also gives the Navy its first helicopter"that can search out and destroy enemy submarines." The aircraft can alight andtake off from water in an emergency, and it has the capability to take off, land or fly ona single engine at low gross weights. • Rotor diam, 62ft; fuselage length, 54ft9in; empty weight, 10,8541b; gross weight, 17,3001b; max speed, 149 m.p.h.; best rate cfclimb at s.l., l,780ft/min; range with 10 per cent reserve, 580 miles.
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