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Aviation History
1960
1960 - 0727.PDF
FLIGHT, 27 May 1960 727 Gyrodyne YRON-h at s.l., l,58Oft/min; range, 300 miles (plusreserve). Cessna Aircraft Company Wichita, Kansas CH-1C Since this attractive helicopterwas described last year it has been on tour of military commands and several addi-tional evaluations are planned in the near future. Announcing certification by theFAA the makers claimed that chief among the CH-lC's qualities was inherentstability without dependence upon elec- tronic stabilizing devices. This stability,they said, was comparable to that of a fixed-wing aircraft. A four-seater, theCH-1C has a Continental FSO-526A engine of 260 h.p., located forward of thecabin section. A single two-blade metal main rotor is employed. In executive formthe aircraft appears to be a worthy stable companion of the Cessna fixed-wing range.• Rotor diam, 35ft; fuselage length, 32ft 8in; empty weight, 2,0651b; gross weight, 3,1001b;max speed, 122 m.p.h.; cruising speed, 100-120 m.p.h.; hovering ceiling in ground effect(2,7001b), 13,500ft; range, 267 miles. Gyrodyne Co of America Inc St James, Long Island, N.Y. YRON-1 Rotorcycle Four distinct ver-sions of the Rotorcycle have been developed and the makers distinguish thesein the following terms: — "Version 1. 17ft diameter rotor, powered bya four-cycle Porsche engine (YO-95-2) with a take-off rating of 62 s.h.p. net after cooling,standard sea-level conditions. This Rotorcycle is now being evaluated by the Marine Corps atQuantico, Va. Expected minimum life of the Rotorcycle between major overhauls—lOOhr.Version 2. 17ft diameter rotor, powered by a Solar T62 gas turbine engine rated at 62 h.p.standard sea-level conditions (based on trans- mission limitations). Flight testing of Rotor-cyde is currently under way, and is scheduled for completion by early 1960. Expected mini-mum life of the Rotorcycle between major overhauls — 500-l,000hr. Version 3. 20ftdiameter rotor, powered by a Porsche engine (YO-95-6) rated at 72 h.p. net after cooling,standard sea-level conditions. Development of Rotorcycle is complete and flight testing iscurrently under way. Expected minimum life of the Rotorcycle between major overhauls—l,000hr. Version 4. 15ft diameter rotor, 'ultra-light' version, powered by a Solar T62 Hitler 72f Kaman HU2K Hughes 269A Kaman K-17 v Doman Helicopters Inc Danbury, Conn LZ-5-2 Although the makers havefailed to furnish particulars of the latest developments in connection with this air-craft, a member of Flight's staff who flew in it last year reported that it had manyfeatures to commend it to operators. "Perhaps the most attractive of these," hewrote, "is the totally enclosed self-lubricat- ing rotor hub, mounting the four hingelessblades; control is effected by tilting the gimbal-mounted rotor-head. The six pas-sengers occupy seats angled out towards the sizeable windows, and with seatsremoved the concertina doors on each side fold to give a completely unrestrictedaccess for large items of cargo. The eight- cylinder Lycoming engine is inclined lowin the nose, and drives via a shaft passing between the pilots up to the rotor-head.In the air the LZ-5 demonstrated great tractability, with sufficient reserve from anengine of only 400 h.p. Ground resonance was quite absent, and vibration in flightnot excessive for a craft of this type." • Rotor diam., 48ft; fuselage length, 38ft;empty weight, 3,2501b; gross wright, 5,2001b; max continuous speed, 100 m.p.h.; speed forbest range, 81 m.p.h.; range (standard tanks), 486 miles. Whippet To be marketed next year, the Whippet is a four-seater with a Lycoming VO-360 engine of 180 h.p. • Gross weight, 1,9401b; max speed, 132m.p.h.; speed for best range, 103 m.p.h.: rate of climb, l,S00ft/min; service ceiling, 15,000ft;range (with 15min reserve), 206 miles engine rated at 62 h.p. on standard day. Thismodel will be a revival of the first Rotorcycle built with the two-cycle engine. Expectedminimum life of the Rotorcycle between major overhauls—5 00-1,000hr."In addition, a twin-engined version, with a 20ft rotor, is under development, andtesting of this model should be completed by the end of this year. The following dataapply to Version 4 of the Rotorcycle: — 9 Rotor diam, 15ft; empty weight, 3001b; gross weight, 5301b; vertical rate of climb, 1,840ft/ min; max speed, 72 m.p.h.; typical range, 25 n.m. (Version 1 has a typical range of 51 n.m.) DSN-1 This is a "drone" developmentof the basic Rotorcycle configuration. A series of these unmanned aircraft will bedeveloped as the airborne elements in the DASH (destroyer anti-submarine helicop-ter) weapon system. By incorporating electronic equipment in place of the pilotthe machine will perform an ASW func- tion of great importance, operating fromdestroyers and returning, after the attack, to the mother ship. Hiller Aircraft Corporation Palo Alto, California YROE-1 Rotorcycle The first of abatch of these small helicopters being built in Great Britain by Saunders-Roe wasflown late last year. The Hiller company state that the type represents the minimumpractical size in helicopters. It achieves a gross-to-empty weight ratio of about two-claimed to be a value unprecedented in mechanically driven helicopters. The en-gine is now a Porsche of 62 h.p., developed
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