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Aviation History
1928
1928 - 0285.PDF
Flight, April 19, 1928 AIRCRAFTENGINEER. First Aeronautical Weekly in the World. Founded January, 1909' Founder and Editor : STANLEY SPOONER A Journal devoted to the Interests, Practice, and Progress of Aerial Locomotion and Transport OFFICIAL ORGAN OF THE ROYAL AERO CLUB OF THE UNITED KINGDOM No. 1008. (No. 16. Vol. XX.) APRIL 19, 1928 ["Weekly, Price 6d.L Post free, 7d. The Aircraft Engineer and Airships Editorial Offices: 36, GREAT QUEEN STREET, KINGSWAY, W.C.2. Telephone: Holborn 3211. Telegrams: Truditur, Westcent. London. Annual Subscription Rates, Post Free. United Kingdom .. 30s. 4d. Abroad .. .. 33s. 0d.* * Foreign subscriptions must be remitted in British currency. CONTENTS Editorial Comment : PAGE Variable Pitch Airscrews .. .. .. .. .. .. 257 A Wonderful Flight 258 Three Men 258 The German Atlantic Flight .. .. .. .. .. .. 259 The. French World Tour 262 Private Flying : Across Africa by Light 'Plane .. .. .. 265 Light'Plane Clubs 7 Variable Pitch Air Screw 269 Airisms From the Four Winds .. .. .. .. .. .. 272 Royal Air Force 275 Air Post Stamps 6 Air Ministry Notice .. .. .. .. •. -- •• 276 Imports and Exports .. .. .. .. .. .. • • 276 " FLIGHT " PHOTOGRAPHS To those desirous of obtaining copies of "Flight" Photographs, these can be supplied, enlarged or otherwise, upon application to Photo. Department, 36, Great Queen Street, W.C.2. DIARY OF CURRENT AND FORTHCOMING EVENTS Club Secretaries and others desirous of announcing the dates of important fixtures are invited to send particulars for inclusion in this list— 1928 Apl. 14-21 Apl. 26 .... May May 517 All-American Aircraft Show, Detroit, U.S.A. " The Design and Construction of Modern Rigid Airships." Mr. B. N. Wallis, before R.Ae.S. and Inst.Ae.E. Aerial Pageant, Filton, Bristol Aero Golfing Soc—Spring Meeting, " Flight' Challenge Cup Light 'Plane Meeting, Hamble 7th Annual Middle East Dinner Light 'Plane Meeting, Castle Bromwich 9-10 Aero Golfing Soc—Team Match v. R.A.F. 20 .... Aero Golfing Soc—Team Match v. Porters Park G.C. June 26-29 F.A.I. Annual Conference, Brussels May 28 Jane 7 June June June 9 Airscrews EDITORIAL COMMENT jjFTER the last meeting of the Royal Aeronautical Society, with which is incorporated the Institution of Aero- nautical Engineers, the nick-name given it by some of its critics, i.e., " The Mutual Admiration Society," can no longer be taken to apply, the shorter, if less polite, title, obviously being a misnomer. Whether it is the new blood from the I.Ae.E., or not, we cannot say, but at the last lecture, that by Dr. Hele-Shaw and Mr. Beacham, the " mutual admiration " was certainlyn °t conspicuous. In fact, it is a very long time since we have heard a paper quite as frankly criticised during the discussion following it. To our way of thinking, Dr. Hele-Shaw and Mr. Beacham stated the case for their variable pitch airscrew quite moderately and soberly, certainly making no exuberant claims for it. That they should subsequently be " rent asunder " therefore came to most as rather a surprise. We have no personal interest in the variable pitch airscrew, and to us it matters not at all whether it be adopted or not, excepting in so far as it may affect the progress of flying, service as well as commercial. But we do think that, in this instance, a certain amount of unfairness—not intentional, we are con- vinced—was allowed to creep in. The whole subject of whether or not the variable pitch airscrew is worth while depends entirely on its weight in proportion to the advantages which it can give. If it be accepted that the weight is and always will be, very great, then obviously there is little hope for the variable pitch airscrew. In their paper, the authors did not give specific figures of weight, but Mr. Lynam, of the R.A.E., quoted an 80 per cent, increase in weight of hydraulic gear as compared with the fixed pitch screw of the same size for the " Jupiter " engine. A similar ratio, he thought, applied to the propeller for the " Condor " engine. Mr. Beacham, in replying to the discussion, stated that already it had been possible to reduce that figure to 50 lbs. It is, of course, obvious that in submitting the first propeller
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