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Aviation History
1960
1960 - 0729.PDF
729FLIGHT, 27 May 1960 Sikorsky S-56 (nearest camera), S-S8 and 5-55 Sikorsky $-60 Skycrang HELICOPTERS OF THE WORLD altitude record for helicopters in the3,850-6,6141b weight category of 30,100ft. • Rotor diam, 47ft; length, 47ft; emptyweight, 5,9001b; gross weight, 7,1001b; max speed, 107 m.p.h.; hovering ceiling in groundeffect, 20,000ft; normal range, 250 miles. Kellett Autogiro Company Box 35, Willow Grove, Pennsylvania KD-1 Notwithstanding its "pre-war" layout, this autogiro is an aircraft of many attractions. A Jacobs R755-9 engine of 225 h.p. is standard and, as the illustra- tion (an artist's impression) shows, the tandem cockpits are enclosed. • Rotor diam, 40ft; length (blades folded),26ft; empty weight, 1,5001b; gross weight, 2,2001b; max speed, 125 m.p.h.; take-off run(no wind), 200ft; rate of climb, l,060ft/min; service ceiling, 14,000ft. McDonnell Aircraft Corporation St Louis 66, Mo Model 120 A private-venture cargohelicopter, the Model 120 is pressure-jet driven and of unusual layout (see picture).Level flight can be maintained at maximum weight with one of the three AiResearchturbine compressors inoperative. The engines are mounted at shoulder height andit is claimed that they can be changed in five minutes without the use of any tools.Cargo is suspended from a pilot-controlled hook immediately below the rotor; alterna-tively, twelve persons can be accommo- dated on "toboggan seats" which attach tothe crossmember supporting the cockpit and a similar aft member which is part of a"personnel kit." This kit will contain an enclosure to protect the occupants fromwind and downwash. • Rotor diam, 31ft; empty weight, 2,4501b;gross weight, 6,3001b; max speed, 138 m.p.h.; hovering ceiling in ground effect, 12,000ft;normal range, 98 miles. Monte-Copter Inc Boeing Field, Seattle 8, Wash Model 15 Tri-phibian This amphibious helicopter utilizes the cold-cycle pressure- jet rotor system. The air-compressor is a Continental 141—the American version of the French Palouste 4. As the illustration shows, the wing (stressed skin) provides outrigger stability as well as unloading the rotor. The fuselage has glass fibre skin and the cabin seats three people. • Rotor diam, 36ft; length, 15ft 3in; emptyweight, 1,2301b; gross weight, 2,0001b; max speed, 95 m.p.h.; range, 170 miles; servicecsiling 15,000ft. Omega Aircraft Corporation Municipal Airport, New Bedford, Mass BS-12 The makers have communicated no new information on this twin-engined utility helicopter, which embodies a five- seat cabin forward and a large cargo area directly beneath the rotor centreline. Two Lycoming O-540-F1B5 engines are mounted externally. • Rotor diam, 39ft; overall length, 48ft; emptyweight, 3,3001b; gross weight, 4,7501b; max speed at s.l., 95 m.p.h.; economical cruisingspeed, 75 m.p.h. Rotorwing Aircraft Company PO Box 9113, Birmingham 13, Alabama Sportsman Although initial productionof this autogiro will be in America, it is also foreseen that production will eventu-ally be shared by a subsidiary in the United Kingdom. The prototype has an 85 h.p.Continental C85, but an engine of 115 h.p. will be fitted in production models. Pilotand passenger sit side by side in the 42in- wide cockpit. The rotor blades are made ofcedar and mahogany, with a steel spar, and the main undercarriage is of leaf-springtype. The first prototype flew in April this year and delivery of the first certifi-cated production model is scheduled for next February. • Rotor diam, 27ft 6in; fuselage length, 12ft;empty weight, 7501b; gross weight, 1,2001b; max cruising speed, 95 m.p.h.; stalling speed,19 m.p.h.; service ceiling, 10,000ft; take-off run, 50ft; endurance, 4hr with 30min reserve. Sikorsky Aircraft Division of United Aircraft Corporation Stratford, Conn S-56 The US Navy and Marine Corpsknow this helicopter as the HR2S and the US Army call it the H-37A Mojave. It cancarry 36 fully equipped troops, with an alternative cargo capacity of 1,325 cu ft.There are clamshell doors in the nose, and vehicles can be driven up a ramp. Auto-matic stabilization equipment, semi-auto- matic blade-folding equipment, a retract-able undercarriage, and a 10,0001b-capa- city automatic touchdown-release cargosling to carry external loads are features. • Rotor diam, 72ft; fuselage length, 82ft lOin;empty weight, 20,6901b; gross weight, 31,0001b; max speed, 130 m.p.h.; cruisingspeed, 115 m.p.h.; rate of climb, 910ft/min; service ceiling, 8,700ft; hovering ceiling inground effect, 4,500ft; range, 230 miles (with external tanks). S-58 This is the helicopter from whichWestland's Wessex has been developed. It is otherwise known as the HSS-1 (USNavy), H-34 Choctaw (US Army) and HUS-1 (US Marine Corps). Seatingcapacity is for pilot and co-pilot and 12-18 passengers; or alternatively eight stretchersor a 4,0001b load can be carried for 100 Sikorsky HSS-2 Sikorsky S-62 Umbaugh -18
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