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Aviation History
1924
1924 - 0682.PDF
DE HAVILLAND SEAPLANES IN view of the number of inquiries received—especially from the Colonies—by the De Havilland Aircraft Co., Ltd., of Stag Lane Aerodrome, Edgware, for seaplanes similar as regards type and performance to the popular D.H. 50 landplane, this firm decided to carry out some experiments with a D.H. 9 biplane fitted with floats in order to collect the necessary data which would enable them to produce a successful float 90 m.p.h. It has a very good climb—600 ft. per min. at ground level—it taking 32 mins. for a climb to 10,000 ft. and 9 mins. to 5,000 ft. From these figures it has been deduced that the D.H. 50, fitted with the same, undercarriage, would be entirely satis factory as a commercial seaplane, and the performance and characteristics would be approximately as follows : — THE D.H.9 SEAPLANE : Four views of the D.H.9 (230 h.p. Siddeley Puma engine) with which trials were recently carried out with the object of producing a suitable float undercarriage for use on the D.H.50 biplane. There is considerable demand for a seaplane of this type for use in the Colonies. undercarriage suitable for use with the D.H. 50 four-passenger machine. We show in the accompanying illustrations four views of a D.H. 9 seaplane, with which some tests were carried out recently in connection with the above problem. These tests were entirely successful, and some very satisfactory figures were obtained. The weight of the D.H. 9 seaplane, empty but including water, is 2,900 lbs., and the weight fullv loaded 3,900 lbs., the load being distributed thus :—Petrol (56 gals.), 395 lbs. ; oil (8 gals.), 80 lbs. ; pilot, 180 lbs. ; paying load, 345 lbs. The speed at ground level is 104 m.p.h., and at 10,000 ft. 100 m.p.h. ; the cruising speed is in the neighbourhood of E H A Norwegian Flight to the North Pole ANOTHER attempt to reach the North Pole by air is reported from Norway. Lieuts. Larsen and Dietrichson are preparing plans for a flight, with two machines, from Spitz- bergen next Spring. Should the scheme be financially assured they will offer the leadership of the expedition to Capt. Amundsen. South Africa's Air Force COL. CRESWELL, South African Union Minister of Defence, appears to be causing some misgivings as to the effect of his far-reaching plans for the reorganisation of the Union Defence Force. Even the Union Air Force, which has never been developed to any great extent, is, it is said, to be reduced under the new scheme. Weight, empty, including water Petrol, 55 gallons Oil, 8 gallons Pilot Paying load Weight fully loaded Speed at ground level . . Cruising speed Speed at 10,000 ft Rate of climb at ground level Time to 10,000 ft Time to 5,000 ft Time to unstick 2,940 lbs. 395 lbs. 80 lbs. 180 lbs. 565 lbs. 4,160 lbs. 140 m.p.h. 90 m.p.h. 100 m.p.h. 550 ft. per min. 35 to 40 mins. 13 mins. 26 sees. H H Italian Aeroplanes Bomb Senussi ON October 12 two Italian aeroplanes flew from Benghazi, Cyrenaica, to Jalo (230 miles away) and dropped bombs on the headquarters of the Senussi insurgents, who have, up to the present, considered their stronghold impregnable. The machines returned safely to Benghazi. R.A.F. Officers from Cambridge University THE Air Ministry announces that on the nomination of the Board of Military Studies of the University of Cambridge the undermentioned graduates of Cambridge University h- ve been appointed to permanent commissions as pilot officers in •Lhe General Duties branch of the Royal Air Force, with an antedate in each case of 12 months' seniority under the University candidates scheme of entry:—Ronald Mel bourne, Edward Collis de Vivac Lart. 682
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