burger-menu
Поиск по сайту:
airplane photo

Страна: Великобритания

Год: 1914

Единственный экземпляр

A.Jackson Avro Aircraft since 1908 (Putnam)

Avro 511

  Three full-sized aircraft shown on the Avro stand at the Olympia Aero Show, London, March 16-25, 1914, were a production Avro 504 seaplane, the Avro 508 pusher and the Avro 511 single-seat, single-bay biplane. This was designed specifically for fast scouting in the event of war and could be swiftly dismantled for road transport to the operational area. Heavily staggered, sparless mainplanes of cellular construction, designed and stressed by Avro’s assistant designer H. E. Broadsmith, were given pronounced sweepback in an attempt to reduce the span and attain inherent stability. On this account the aircraft was promptly and unofficially dubbed ‘Arrowplane’ or even ‘Arrowscout’ by the sensational press but these names can find no place in a serious work of reference. Ailerons were fitted to all four wings and single wide-chord interplane struts were used on each side. Landing flaps were incorporated in the inboard trailing edges of the lower mainplanes and pivoted diagonally about a stout steel tube which passed through the fuselage. This device, years ahead of its time, reduced touchdown speed to 35 mph.
  The Avro 511 was otherwise typically Avro with standard centre-skid undercarriage and comma-type rudder. The nose was of good streamline shape with a close fitting cowling round the 80 hp Gnome Monosoupape rotary engine. The cowling was later modified as it prevented adequate cooling. Estimated maximum speed was 95-100 mph and the machine was to have been piloted by F. P. Raynham in the Aerial Derby Race round London on May 23, 1914 (racing No. 14). Storms on the eve of the race caused deterioration in the weather which led to a postponement until June 6 but Raynham managed to make one or two demonstration runs for the benefit of the few hardy spectators. When returning home on the following day he made a safe landing after the engine failed within gliding distance of Brooklands. It had not proved as fast as had been hoped but was nevertheless entered (racing No.20) in the postponed Aerial Derby.
  In preparation for this event the Avro 511 was fitted with alternative mainplanes without sweepback which Broadsmith had designed in case trouble was encountered with the swept wings. The rebuilt machine, designated Avro 514, was also equipped with a light weight, unsprung, V-type racing undercarriage without the familiar skid, but while taxying out at Brooklands to take off for Hendon on the eve of the race, an eye bolt sheared. The undercarriage collapsed, breaking the airscrew and bending the engine crankshaft as well as damaging wings and fuselage. After reconstruction at Manchester the Avro 514 was successfully flown from Southport Sands by F. P. Raynham in July 1914 but further development was ended by the outbreak of war.


SPECIFICATION AND DATA
   Manufacturers: A. V. Roe and Co. Ltd., Clifton Street, Miles Platting, Manchester; and Brooklands Aerodrome, Byfleet, Surrey
   Power Plant: One 80 h.p. Gnome Monosoupape
   Dimensions:
   Span 26 ft. 0 in. Length 22 ft. 4 in.
   Height 9 ft. 4 in. Wing area 235 sq. ft.
   Weights: Tare weight 675 lb. All-up weight 1,165 lb.
   Performance: Maximum speed 95-100 m.p.h.

Показать полностью

Описание:

  • A.Jackson Avro Aircraft since 1908 (Putnam)
  • M.Goodall, A.Tagg British Aircraft before the Great War (Schiffer)
  • P.Lewis British Aircraft 1809-1914 (Putnam)
  • H.King Armament of British Aircraft (Putnam)
  • P.Lewis The British Fighter since 1912 (Putnam)
  • F.Mason The British Fighter since 1912 (Putnam)
  • Журнал Flight