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Aviation History
1920
1920 - 0677.PDF
.»::•': JtTNB 24, 1920 •double-surfaced wings sare essential for large machines, asone cannot obtain a reasonable section by double-surfacing •ordinarily constructed planes. (To be Continued) The Forthcoming Aero Show at OlympiaWE wish to get into touch, at once, with those readers wishing to exhibit models at the forthcoming show atOlympia. It has already been announced in FLIGHT thatthe Royal Aero Club is organising the Inventions and Model Section, and has consented to allot a certain space,free to exhibitors, for this purpose. While it is not desired to show any machines of the freak variety, it is not necessaryto show a complete machine. Any machine, or portion thereof, that embodies new ideas, or ideas that can reasonablybe termed novel or inventions, is what is required. Flying sticks and models having no direct bearing on full-sizepractice are not required. It is the inventor, the man with something new we wish to see exhibiting. One fears that,in the earlier model shows, the freak variety of machine was very much in evidence, and while they may not havebrought discredit on the movement, they did little, if any- thing, to create or sustain interest permanently. Provincial members need not be precluded from enteringon the score of distance. If they will send the jmachine to me, I shall be glad to arrange it in the show, and also to returnit thereafter. Owing to the proximity to the opening of the show, it is necessary that any desirous of exhibiting shouldlet us know without delay ; a card will do, stating exactly what it is proposed to exhibit. New wing-sections, improve-ments in airscrews, new designs of machine or new arrange- ments of components are what is required. Please make apoint of letting us know early, so that we may allocate space. Aero Models and Research Club . FROM Mr. C. Burchell, the hon. sec, we have received thefollowing report of the activities of this club since Easter:— " It has been difficult to keep in touch with members owingmostly to the fact that they are so widely scattered. How- ever, enthusiasm has been raised considerably by the adventof some fine models which have put up some splendid flights. Chief amongst these must be mentioned Mr. E. Coleman'sdeep spur model which was flying most successfully on the Saturday before Whitsun. This is a fine specimen of wood-craft. The spar or rather body being 1 f in. deep at the deepest part, and looking while in the air like the real thing.The prop (a 12-in. ' Sebur' type was finished off with a neat aluminium spinner. The span is 3 ft. 6 in., and haswire wing tips ; the same for tail and fin. Another novelty, too, is the chassis which is formed of a reinforced strut withbracing wires back and front. Mr. Colehatch, too, had a smart little machine which was putting up some fine altitudenights. Mr. Whelpton was making some fine flights. An : informal competition was organised on the spot for a pairof propellers presented by Messrs. A. E. Jones, and led to a ding-dong battle between four of the members, Messrs.Burchell and Coleman standing out; Mr. Colehatch finally winning with a total for three flights of 102 sees. The club•"•,. rule of 2 hand-launched and one R.O.G. flight was followed. • • Mr. Walkereline was a very close runner-up with 83 sees.,only failing with the R.O.G. which was only 3 sees. This is a thing which members will have to improve on as it is notan easy test for a machine to get off rough ground. Keen interest was taken in the contest, both by members andspectators, of which there were a large number. " The Easter flying was something of a fiasco owing tothe weather being so unsettled, and the competition was therefore held over till better times. Great interest hasbeen shown in Mr. Jackson's models-^-two of these have been out lately, one a little biplane only 2 ft. span with abody complete in every detail, only 18 in. long, and with a geared motor. Some nights of at least 100 yds. weremade by this small machine at a height sometimes of quite 20 ft. The ' Gem ' is a monoplane, Junker type, with adouble surface, which put up what must be a record for this type (35 sees.), and landing in a tree ! More will be heardof this model as it was by no means run out when it was ' treed.' Most of the members are concentrating on this typeincluding some rather large ones of fair weight. The Junker section wing (somewhat modified for model purposes), beingmostly used. It is good to see modellists going more deeply into this subject of wing sections. It is hoped to publishsome interesting results before long." Illinois Model Aero Club News The Year's Work WE have received the following from Mr. B. Pond, secretary of the Illinois U.S.A. Club :— " The summer was marked by a world's record passing from Mr. Pease to Mr. Sweitzer, who made a flight R.O.G.of 4,029 ft. The usual annual scries of contests for the handsome Laird Weaver Trophy was won by Mr. Wm.Sweitzer. Mr. R. Taros won the amateur duration prize. The prize for amateur distance was won by Mr. J. Kroviak.The famed Villard Trophy, muchly polished and lacquered is now a permanent part of the I.M.A.C. collection of trophies.The Aerial Age Medals .were all won by I.M.A.C. members, and medals formed an important part of the time-keepingequipment of the lucky ones. " The annual scale model contest was held December 5,1919. Among the models entered were an ' Ansaldo I,' an S.E. 5 and an Albatross C.V. The model makingthe best duration flight was given 50 per cent, and the other models in proportion. The best workmanship wasgiven 25 per cent, and the others in proportion. The model constructed most nearly like the drawing or plan of theoriginal machine, which the contestant was required to furnish, received 25 per cent, and the others proportionately.S.E. 5 took first in workmanship and following the original design, the ' Albatross ' flew longest, but the ' Ansaldo I '—judged a close second in all three characteristics—won a handsomely engraved shield given by Mr. Brock by havingthe highest average for the three points considered. "A big boost was given by the Chicago Aero Show, wherethe models created more of a sensation than the big machines. Members of the. I.M.A.C. kept slow flying indoor tractormodels circling in the air above the crowds roost of the time during the show. The dutdoor models and the scale modelswere hung around above the Club's booth and a large case of accessories of all sorts stood across the booth. " A series of indoor contests for 10 in. R.O.G. durationmachines, with two prizes for each contest, was held from January to April. Along with these .contests a series oflectures was given on model designing by many old flyers. " With many of the old members gone, the success of theclub during a very hard year is nothing short of remarkable. The club remains unchallenged as the foremost model clubin the country. " All contests except the hydro and scale model contestswill be held at Ashburn Flying Field. The hydro contests will be held at Lake Calumet and the scale model contestwill be held indoors. " Five contestants are necessary in order to hold acontest. Three official flights will be given each contestant. " A first and second prize will be given at contest No. IV,and other prizes donated will be divided among remaining contests." A Club for Golder'a Green A MOVE is being made with the object of starting a modelaeroplane club at Golder's Green, one of the leading spirits being Mr. C. S. Mitchell, who originated the Ascham ModelAero Club. Mr. A. E. Mayers, 12, The Meadway, Golder's Green, N.W. 4, will be glad to hear from anyone interestedwith a view to arranging for a meeting to discuss the forma- tion of club. (Replies to Correspondents) R. C. (Bradford).—(1) It has been tried and found useless.(2) The French Government are now experimenting with a machine which has given promising results. " The HelicoptereFlying Machine," by J. R. Porter, might provide some information of service to you.C. V. (Liverpool).—Sorry, we have no particulars of the machine you mention. No doubt, if you wrote to thecompany mentioned at their works, Hendon, they would supply the desired information. G. H. (Dumfriesshire).—As the matter would hardly beof general interest, we shall be glad to let you have particulars through the post.A.S. (Birmingham).—There is really nothing new in your screw, although it is impossible to give a precise opinion inthe absence of more definite information. During the past six years I have written much about model airscrews, andthe chapter in my book will doubtless explain the matter for you. I personally would not attach any importance tothe thrust you obtain, which is obtainable from any screw if sufficient power is applied; the screw duration (5 sees.), too,is not of practical use. If you will furnish a pencil drawing of the screw I shall then be pleased to go more deeply intothe matter. A. W. K. (Leatherhead).—Many thanks for your letter;I'll do my best to carry out your suggestions. See reply to W. C. O. below.F. K. (Ramseyj.—I replied direct to your letter. ~ 1 W. C. O. (Shoreham).—Your address has been forwardedto Mr. H. H. Groves. 677
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