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Aviation History
1949
1949 - 1168.PDF
June 23rd, 1949 735 H.P. 18 (VV.8). H.P.24. Hyderabad, H.P.19 llaiiltv The first Handley Page aircraft designed to take advan- tage of wing slots was the Hanley deck-landing torpedo carrier, a three-bay biplane with manually worked slots along the leading edges of upper and lower mainplanes. This type, which was. fly ing early in 1922, was a single- seater and was given a large ground angle to permit full advantage to be taken of the slots. The engine was a * JLion and the flying weight was 6,500 lb. 1H.P.2O (Y.4B) - A slotted cantilever wing, fitted to a Liberty-enginedD.H.ga fuselage, constituted this 6,500-lb experimental machine. 1I.P.21 » Three examples of this remarkable deck-landing fighter "••ftfere built in 1923 for the U.S. Navy. Despite a wing load- ing of 18 lb /.sq ft, leading-edge slots, and slotted '' droop- ing " ailerons allowed a landing speed of only 44 m.p.h. The 230 h.p. Bentley rotary engine gave a top speed of 146 m.p.h. p.P.22 1 For the 1923 Lympne Trials, Handley Page produced this tiny cantilever monoplane, weighing only 430 lb loaded, and powered by a 397 c.c. A.B.C. engine. The ailerons were slotted and drawings were prepared for an H.P.22 development (H.P.23) with leading-edge slots. This type never materialized. H.P.24 Hyderabad •i With certain exceptions, necessitated by its military application, the Hyderabad bomber of 1923 resembled the W.8. transport. Powered by two Napier Lion engines, and weighing 12,623 lb all-up, it had a maximum speed of 109 m.p.h., climbed at 800 ft/min (the 0/400 could not better 340 ft/min), and achieved a service ceiling of 14,000 ft, against the 0/400's 8,600ft. The Hyderabad was the first large aircraft to use Handley Page slotted-wing equip- ment; it had automatic wing-tip slots on the outer por- tions of the upper mainplanes. These gave a high degree of lateral stability and the pilot had powerful and well- maintained control throughout the speed range. On the Hyderabad was performed much of the development work on the automatic slot, which relieves the pilot of any Responsibility for correct opening and closing of the slots. H.P.25 Hendon Completed in June, 1924, the Hendon was a two-seater development of the Hariley, likewise having a Napier Lion engine. The speed range was from 45 m.p.h. to 108 m.p.h. and the service ceiling was 10,oooft. HJ».2I. HJ>.2L
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