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Aviation History
1961
1961 - 0613.PDF
7T, 11 May 1961 Substantial numbers of an anti- ,rine version are on order for the Navy and are already entering ser- The proving of the type in service he subiect of an article in Flight of mber 11. I960. On that occasion it ^rted that the aircraft carried UHF HF radio, "dunking" Sonar, radio •eter. and Ryan APN-97A Dopnler. Its ubmarine weapons are carried ex- .ilv, and the IN anti-submarine system N> -'i is being fitted is licence-manufacturedn ;is countrv bv Louis Newmark Ltd. le manufacturers list the roles of the V vx as: 12-seat civil passenger transport; 'ransport, carrying up to 16 fully jd troops; casualty evacuation. vl: ing eight stretchers internally and amedical attendant: air/sea rescue, using an hvci-aulic winch capable of lifting 6001b; freighter, carrying uo to 4.0001b in the cabin or in an internal freight sling; pilot training (full dual control can be fitted); anti- submarine defence (search and strike); para- trooping; aerial tug; aerial crane. 0 Rotor diam. 56ft; length. 65ft 9in; height,14<"t Tin; gross weight, 12.6001b; empty weight, 7.6001b; max speed, 132 m.p.h.; max cruisingspeed. 126 m.n.h.; rate of climb at s.l. (for- ward speed 69 m.p.h.) 1.750ft/min; hoveringceilins out of ground effect, 5,000ft; max range 'standard tankage). 340 n.m. Wessex 2 This development of the Wessex 1 is a more powerful version, having two de Havilland Gnome free turbines of 1,250 s.h.p. each. Designed for both military and civil applications, it will have a performance in high temperatures and at high altitudes that will enable it to be operated, say the makers, "with realistic payloads in almost anv part of the world." They add that its excellent single-engine performance will give it a high degree of safety for bad weather flying and city-centre operations. The following performance figures are provisional:— • Rotor diam, 56ft; length, 65ft 9in; basicweight, 7,8501b; gross weight, 13.5001b: max speed. 138 m.p.h.; max cruising speed. 132m.p.h.; rate of climb at s.l. (forward speed of W m.p.h.). 1.540ft/min; hovering ceiling inground effect, 14,200ft; max range (standard tankage). 300 n.m. Whirlwind The Whirlwind is offered with either the Alvis Leonides Major of 750 h.p. or Pratt & Whitney R-1340 of 600 h.p. Typically an eight-seater, with a crew of two, it has proved over the years its adaptability for numerous civil and military applications. • Rotor diam, 53ft; overall length. 62ft;basic weight, 5.3751b; gross weight. 8.0001b; max cruising speed. 92 m.p.h.; hoveringceiling out of ground effect, 4,000ft; max range (standard tankage). 290 n.m. Gnome Whirlwind This 8/10-seater general- purpose helicopter is powered by a 1.050 West/and I92C interior Westland Wessex I Westland Wessex 2 (model) Westland Gnome Whirlwind Westland Whirlwind
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