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Aviation History
1949
1949 - 1170.PDF
June 23rd, 1949 9.41 and 45 (Hannibal and Heracles) H.PM Hamlet. HJ>.36 Hinaidi II. H.P.35 Clive The first Clive bomber transport for the R.A.F. (Mk. I) was built in 1928 and was of wooden construction; a metal version (Clive Mk. II) flew in 1930. The type was designed to fulfil any of five different functions—troop, freight or petrol carrier, bomber or ambulance. With two geared Bristol Jupiter VIII engines the Clive II (14,500 lb) attained 111 m.p.h. at 4,000ft. H.P.36 Hinaidi II The first Hinaidi night bomber (two Jupiter engines) was actually a converted Hyderabad, and bore the type number H.P.33, but the production Hinaidi Us of 1931-32 differed in detail and went by the type number H.P.36. As on the Hydera- bad, automatic slots were fitted. Data were: Span, 75ft; gross weight 14,500 lb; disposable load, 7,260 lb; top speed, 122 m.p.h. at sea level. H.P.38 Heyford Named after a famous R.A.F. bomber Station, this twin- Kestrel night bomber, designed* along unique lines, first flew in 1933. A number of R.A.F. squadrons were later equipped. The Heyford's most striking characteristic was the placing of the fuselage under the top wing. Bombs were stowed in the lower centre section, and there were nose, dorsal and ventral gun positions—the last a rotating and retracting "dustbin." Loaded to 15,500 1b the Heyford was capable of over 140 m.p.h. Its span was 75ft and the wing area 1,420 sq ft. HJP.39 Gugnune There were 27 entrants for the Guggenheim air safety com- petition held in the U.S.A. during 1931. Of these only two survived the tests. Both were slotted, and one was the H.P.39, later to be dubbed '' Gugnunc '' and to endear itself to thousands at the R:A.F. Display. This remarkable little biplane, now preserved in the Science Museum, South Kensington, had an astonishingly steep take-off angle, a top speed of 112^ m.p.h. and a minimum speed of 33! m.p.h. 11.P.43 The wing structure of this large bomber-transport (July, 1932) resembled that of the Hannibal and Heracles class transports of Imperial Airways, but the power plant consisted of three Bristol Pegasus—instead of four Bristol Jupiter—engines. The span was 114ft, gross weight 22,500 lb, and maximum speed 118 m.p.h. II.P.42 and 45 (Hannibal and Heracles) Late in.. 1930 came the first flight of the H.P.42—a most ambitiously planned airliner with four Bristol Jupiter engines and having a span of 130ft. The Hannibal class variant was for eastern service, and the Heracles for western, on Imperial routes. Eight machines were built; some 12,000 hr flying were registered by each and their aggregate mileage (at a'cruising speed of 95/105 m.p.h.) w.as upwards of 10 million. The take-off time was nine seconds and landing speed about 50 m.p.h. Petrol consumption was 79 gal/hr, or roughly 46 miles per passenger per gallon. These majestic old stalwarts continued in airline operation until the beginning of the war; they then embarked on a new career as military transport.
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