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Aviation History
1935
1935 - 1371.PDF
JUNE 6, 1935- FLIGHT. 017 Here and There.— sinners have tried to get over the difficulty by designing forms of attachment in which the shear area was increased, but • none of the attempts has met with full success. It would appear that the new method overcomes all difficul ties previously encountered in effecting the mechanical combination. At any rate, the Schwartz C.P. airscrew has obtained its certificate of airworthiness in Germany, and is jn quantity production there. Four types are to be tested in this country in the near future, and there seems to be no reason to think that the airscrews will not work as satisfac torily on British as on German engines. The use of wooden blades on a C.P. airscrew should bring verv considerable advantages. It is not that the blades in themselves are startlingly lighter than corresponding blades in metal; probably the relative weights of the wooden blades is something over 50 per cent. But, as the bulk of the wooden hlades lies only a short distance out from the hub, the centri fugal force is probably only about one-third of that of a metal blade, so that, apart from the saving of weight on the blade itself, there should be a very great saving on the weight of the hub. It is, of course, obvious that the more weight can be saved on a wooden-bladed C.P. airscrew the lower the pitch-diameter ratio at which the C.P. airscrew becomes worth adopting, so that many aircraft on which C.P. airscrews of the weights common to-day would scarcely be worth while would come into the C.P. category. It is understood that the Airscrew Company does not intend to start the manufacture of C.P. hubs, holding the view, with which we agree, that this is the engine designer's proper care. The company will produce the wooden blades, in close col laboration with the designer of the hub, leaving him free to use any system of operation which he prefers, either a two- position hub or an infinitely variable pitch hub. The results of the four tests to be made with wooden-bladed C.P. airscrews in this country will be watched with the keenest interest and may well be found to mark the 'beginning of quite a wide adoption of this particular aid to efficiency. Monoplane as Heroine " Henrietta." By Charles Lome. (Peter Davies, Ltd., London, js. 6d. net.) Writers of novels or short stories in which the characters are exclusively involved in some highly technical job or other are in an extremely difficult position. If they please the technicians they fail to please the public—and vice versa. American writers usually manage to carry it off, and it is unusual to read an American story about flying or oil prospecting or cowpunching in which the author does not give an impression of having a thorough grasp of his subject—with out boring his readers. The author of '' Henrietta '' has carried off a difficult sub ject well. The story is exclusively centred round a cabin monoplane, and the characters appear and disappear without explanation or apology. Yet the reader is sufficiently gripped by the main subject to be almost indifferent to the fate of thr mere humans who successively own the machine. The suggestion that the monoplane is in partial control of every situation is, perhaps, a trifle overdone, but it is difficult to see how Mr. Lome could have handled the situation without this little conceit to assist him. H. A. T. ' FOR THE KING'S CUP. In the maker's works at Reading this racing " Hawk Major " two-seater is nearing completion. Fitted with a boosted " Gipsy Major " giving 146 h.p., it will be flown by Mr. Cook, who competed in last year's event on a " Gipsy Swift." The new machine has a coupe top which gives it exceptionally good lines, and it should do well. (Flight photograph.; Reconnaissance Tests in Deutschlandflug TEAM work rather than individual performances was again aimed at in the Deutschlandflug (Circuit of Germany) this year. Organised by the Deutsche Luftsport-Verband, the contest started and finished at Tempelhof aerodrome, Berlin. During the period May 27-June 2 the competitors had to cover a circuit of Germany totalling 5,534 km. (3,435 miles), and points were awarded for reporting accurately the location of certain marks laid out on the ground, large gather ings of people, troops on the march, large convoys of motor cars, and so forth. Failure to report these accurately' was penalised by the loss of points. For the rest, the award of points was based upon the maintenance of certain averagt speeds, higher speeds for small squadrons and lower speeds for large squadrons If a squadron lost a machine it was not disqualified, but had to increase its speed to that correspond ing to its reduced size. Thirty squadrons, totalling T54 aeroplanes (reports Flight'i Berlin correspondent), started from Tempelhof. The squad rons were composed as follows: 6 of 3 aeroplanes each, 2 ol 4 each, 16 of 5 each, 3 of 7 each, and 3 of 9 each. During the circuit 31 compulsory landings had to be made and 35 turning points had to be rounded. The stops at night were at Guben, Koenigsberg. Bremen, Freiburg and Erfurt. On the first dav two machines fell out, and on the second Forthcoming Events June 1-1 June 7-1 June June Club Secretaries and others are invited to send particulars of important fixtures for inclusion in this list. July 20-21. Coupe Armand Esders, Aero Club de France. July 27. London-Newcastle Race. Newcastle Aero Club. July 28. Private Owners' Garden Party, Ratcliffe, Leicester. Aug. 17. Round the Isle of Wight Air Race and Portsmouth Air June 15. June 15. June 16. June 29. July 1. July 6. July 7. July 13. July 20 5. Lisbon Aero Show. 1. Whitsun Flight through Austria. Oesterreichischer Aero Club. London Aeroplane Club. Garden Party. Hatfield. Official opening and garden party. Witney and Oxford Aero Club. R.A.F. Flying Club Annual Display, Hatfield. Bristol and Wessex Aeroplane Club S.B.A.C. Challenge Cun, Whitchurch. Scottish Flying Club Display, Renfrew. Royal Air Force Display, Hcndon. S.B.A.C. Display, Hendon. Royal Air Force Fly-past before H.M. the King at Duxford. Douze Heures D'Angers, Aero Club de France Opening of Leicester Municipal Airport. Opening of Brighton. Hove and Worthing Municipal Airport. Shoreham. Trophy. Aug. 24-25. Third International Flying Meeting, Lympne. Aug. 24-25. Cinoue Ports Club. International Flying Meeting and Wakefield Cup Race. Aug. 24-30. Raduno del Littorio. Rome. Reale Aero Club d'ltalia. Sept. 4-18. Jungfraujoch Concours Aero Club de Suisse. Sept. 6-7. King's Cup Air Race. Sept. 14. Cinque Ports Club. Folkestone Aero Trophy Race Sept. 15. Gordon Bennett Balloon Race, Warsaw. Oct. 12-28 International Aircraft Exhibition Milan.
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