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Aviation History
1961
1961 - 0630.PDF
«*» McDonnell Model 120 VTOL INTERNATIONAL SURVEY S-61L This is a commercial helicoptercarrying from 25-28 passengers. It has "the capability to continue flight to normal land-ing areas with one engine inoperative." The hull can be sealed to give the aircraft amphi-bious capability and to permit it to operate from land, water, snow, ice, or almost anyother surface. The S-61L uses the major mechanical components, the main rotorhead, and rotor blades of the HSS-2. • Rotor diam. 62ft; fuselage length, 58ftIlin; weight empty, 9,2701b; gross weight, 18,7001b; max Speed, 147 m.p.h.; typicalcruising speed, 136 m.p.h.; best rate of climb at s.l., l,600ft/min; range with max fuel, 350miles. S-62 The S-62 is the first Americanturbine-powered helicopter to be certificated by the Federal Aviation Agency for com-mercial operation. It is also the first heli- copter of any type to be certificated underthe FAA's new helicopter transport regula- tions which are far more stringent thanprevious requirements. The FAA certificate permits the aircraft to carry a pilot, co-pilotand 11 passengers. The first helicopter to have a flying-boat hull, the S-62 can operatefrom most types of surface. The makers further state: "The S-62 is the first helicopterin history to fly from the start with proven mechanical components having extendedoverhaul periods. This was accomplished under the Sikorsky building block conceptof blending a new airframe and a modern gas turbine powerplant with the mechanicalcomponents of the time-tested Sikorsky S-55. The S-55 has mechanical componentsproved in world-wide operations during more than 1,200,000 flight hours and thealmost 1,300 helicopters of this type manufactured during the past 11 years."The engine is a General Electric CT58-1OO-1 of 1,050 s.h.p. derated to 670 s.h.p. • Rotor diam. 53ft; fuselage length, 44ft7in; empty weight, 4,7891b; gross weight. 7,5001b; cruising speed, 98 m.p.h.; best rateof climb at s.l., l,38Oft/min; range with normal fuel, 270 miles. S-64 A forthcoming member of the Sky- 640 FLIGHT, 11 Ma . %\ Sikorsky S-60 crane family, the S-64 is described as an all-purpose transport and flying crane. A series of detachable pods, designed and equippedto give the best possible performance, is being developed, and an important applica-tion foreseen is that of aerial tug. The makers particularly draw attention to theaft-facing pilot's seat and flight controls, offering direct rear vision for pilot-com-mand of loading and towing operations; the 9ft unobstructed loading area; theundercarriage, which is hydraulically short- ened or extended to facilitate load pick-upsand to eliminate the need for extra ground- loading equipment; attachment points onboth the fuselage and undercarriage permitting almost any conceivable shape ofload to be secured; and the "load stabilizer" which prevents undue sway in cargowinching operations. The engines are Pratt & WhitneyJFTD12A-2 turbines delivering 4,050 s.h.p. each (military rating) and they drive asix-blade rotor. • Rotor diam, 72ft; overall length (bladesextended), 87ft 6in; empty weight, 17,2401b; gross weight, 38,OOOlb; cruising speed, 109m.p.h.; vertical rate of climb at s.l., 800ft/min; hovering ceiling out of ground effect, 6,000ft;max range (two engines), 200 n.m.; max range (single engine), 80u n.m. Umbaugh Aircraft Corporation Hagersto wn, Maryland Umbaugh 18 This autogyro, now in large-scale production, has been designed to sell for $9,995 (£3,569). The makers state thatthe Fairchild Engine & Airplane Corpora- tion has sub-contracted to build 10,000. ALycoming 180 h.p. engine drives a pusher propeller, necessitating the use of a low-setboom, which carries a tailplane and three vertical surfaces. The two occupants sitin tandem and have dual controls. The three-blade rotor can be pre-rotated forjump starts (the makers state, "Simply push a button and take off!")- Construction is allmetal and there is 6 cu ft of baggage space. The aircraft can be adapted for crop-dustingand spraying and will be available with floats. • Rotor diam, 35ft; gross weight, 1,8001b;cruising speed (65 per cent power), 100 m.p.h.; service ceiling, 15,000ft; range, 350 miles. Piasecki VZ-8P Sikorsky S-62 Sikorsky HSS-2 I X Umbaugh Model 18 Sikorsky S-6IL
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