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Aviation History
1925
1925 - 0676.PDF
OCTOBER 15, 1925 to his destination, and the lecturer arrived at the conclusion that over long distance services, under European conditions, multi-engined machines were a necessity. Mr. Handley Page then, again referring to the tables, pointed out that up to March, 1923, 10 per cent, of the flights commenced were interrupted, 9 per cent, up to March, 1924, and 7 per cent, up to March, 1925, and during the last two years there were' five and four accidents, respectively, which led to serious damage to the machine or injury to the occupants. This represented one serious accident for every 70 forced landings, or, approximately, one serious accident for every 1,000 flights commenced, which he regarded as much too high a percentage. Whilst the development of ground organisation and multi-engined aircraft was pro- ceeding, Mr. Handle - Page thought insistence should be laid on slow flying speeds with adequate control on all commercial aircraft. In the majority of cases, accidents were the result of a stall, and the lack of control which resulted, and if the aircraft could not only be landed slowly, but also flown slowly, the commercial air services could maintain a much greater degree of regularity. Another means of preventing accidents, as a result of having to make forced landings, was for the installation in the machine of a warning device to indicate to the pilot that the stalling point was being reached, or the use of the slot inter-connected with the aileron, or the slotted wing itself, so that full control was obtained if the machine was stalled, or, alterna- tively, that the stalling point was difficult to reach owing to the extremely great angle of incidence at which it occurred: No matter how adequate the control beyond the stall, it was much better to fly under the normal regime, but the slot and inter-connected aileron or slotted wing by itself provided the means by which the danger of a stall was avoided. A further point upon which Mr. Handley Page thought insistence should be laid was the avoidance of wing sections having a sudden stalling point. \ These two views of the Dornier "Wai," which vis ited South- ampton recently, have been sent to us by Mr. O. E. Simmonds. The upper photograph shows the ma- chine at rest on the sea, while on the right is a view of the nose and the two Rolls- Royce " Eagle " engines. 676
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