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Aviation History
1922
1922 - 0513.PDF
The Bristol 10-seater, 400 h.p. Bristol " Jupiter. D.H.9, 230 h.p. Siddeley "Puma. The Bristol Monoplane.—As the winner recently of the Aerial Derby Handicap, the Bristol monoplane with 100 h.p. three- cylinder, air-cooled Bristol " Lucifer " engine will be familiar to our readers. The machine, which was designed by Capt. Sutherland, to be piloted by Capt. Muir of the Surrey Flying Services, and the other by Col. Darby of the A.D.C., to be flown by Mr. Piercey. The engines fitted are Siddeley " Pumas." m SHBfl^* ; M^^m8^^^^^':i>*teca^ ^^^^^^^™™W^BB Bristol Monoplane, 100 h.p. Bristol " Lucifer." Barnwell, is characterised by crescent-shaped wings, and should thus be easily identified. It has been entered by Sir Henry White Smith, and will be flown in the race by Flying Officer R. A. de H. Haig, the famous Martlesham test pilot. The Boulton and Paul P.g.—This machine was designed some years ago as a general utility 'bus, and in order to keep •down cost and running expenses it was fitted with an engine of low power, i.e., 90 h.p. R.A.F. IA. In spite of this the P.£ is reasonably fast, and is, we understand, very nice to handle. Mr. Frank Courtney keeps one at Croydon for his The Boulton and Paul P.9, 90 h.p. R.A.F. 1A. personal use in travelling about the country on testing bent, and finds it not only very convenient, but also cheap to run. Two of the P.g's have been entered for the race—one by Lieut.-Col. J. E. Tennant, who will pilot the machine himself, and the other by Brig.-Gen. J. G. Weir, whose pilot in the race is Mr. C. T. Holmes. The D.H.g.—As the prototype of the different variations of D.H.'s, the 9 is of interest in having at onetimelbeen turned out in enormous quantities during the War. We have an idea that when production was at its maximum the Aircraft Manufacturing Co. were turning out D.H.9*s at the rate oi one machine every 40 minutes, or something like that. The type is therefore in existence in large quantities, and for fairlv small machines the D.H.9 and its variations have proved as suitable and efficient as it is possible to get a machine of this size It will be remembered that it was on a machine of this type that Mr. Cobham made all his famous tours in Europe and across to Northern Africa. Two D.H.9s have been entered for the race—one by his Grace the Duke ol D.H.9A, 350 h.p. Rolls-Royce " Eagle." The D.H. gA is generally similar to the standard D.H.9, but has a Rolls-Royce '' Eagle " engine instead of the Siddeley '' Puma." As the " Eagle " is of 350 h.p. the gA is naturally a good deal faster than the 9 with 230 h.p., hence it is placed considerably after the g's in handicap. The gA has been entered by Lieut.-Col. J. Barrett-Lennard, and will be flown by Mr. H. H. Perry. nxThe D.H.gB.—Of the variations of the standard D.H.9, the 9B represents, perhaps, least departure from the original design, the main difference being that whereas the standard 9 has but two cockpits, the gB has three, an extra seat having been added in front of the pilot, between him and the engine. In other respects the 9B is exactly similar to its prototype. The specimen entered for the race has been entered by Capt. The D.H.9B, 230 h.p. Siddeley " Puma." de Havilland, and will be flown by Mr. Cobham. The engine is a Siddeley " Puma." The D. H.gC.—If the Avro 504 has appeared with a number of different engines, it may be said about the de Havilland 9 that this machine has been used in a number of variations. 1 ' ^Bsflj^BSttttiiB^v;;.. ^^^jpiBBjBRj BBfl m m^ The D.H.9c, 230 h.p. Siddley " Puma.' 513
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