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Aviation History
1920
1920 - 0059.PDF
JAMUARY 8, I92O MODEL. AEROPLANES . «' NOTE.—All communications should be addressed to the Model Editor. Compressed-air-driven Model " 1 SHOW this week a plan and end elevation of the model dealt with in the issue of Dec. 18. Birch was used for the mainplane (single-surfaced). The container is bound with 35 S.W.G. and weighs 4 oz. ; the engine weighs ij oz. The planes are attached as shown in Fig. 4, by means of tinfoil straps fastened round the container body by means of draw bolts. Cudworth, 41, Coniston Road, Abbeydale, Sheffield ; or the Vice-President, Mr. H. Slack, 70, Hawksley Avenue, Hills- borough, Sheffield. British Records We have received the following letter from Mr. Louch :— " I wish to point out a slight error made in the issue of FLIGHT for December 4, 1919. The error in question is with reference to official records. It is stated that the official Histories of Model Clubs The writer, just after the outbreak of War, in these columns raised the question of the histories of the older Model Aero Clubs. Space limitations and the absorption by the army of the members of those clubs, prevented the tentative project from reaching fruition, although the writer went to con- siderable trouble in retrospection of the history of the Windsor Aero and Gliding Club, with which he was formerly con- nected. The time, however, is now ripe for the publication of these histories, many of which were started. Evans, of the Paddington Club, promised one of his club, and so did many others. We should be glad, therefore, to receive them, or if secretaries will provide me with the data, 1 should be glad to write them myself for publication herein. Such matter should provide highly interesting reading, and 1 hope secre- taries will communicate with me on the subject. Drawings need only be sent in rough outline (needless to add,with full dimensions and particulars), and I shall have great pleasure in preparing them for reproduction. Photographs must be sharp for reproduction. Sheffield Aero Club (Affiliated with K. and M.A.A.). WE have received the following from Mr. Cudworth :— " The above Club was founded on February 8, 1911. Owing to hostilities and most of the members joining the Army, the activities of the club have been in abeyance for the last four years. All interested in aeronautics desirous of becoming members (as the club is starting again early in the New Year), should communicate with the Hon. Secretary, Mr. C. F. W. duration record of 2 min. 49 sec. was created by Mr. L. H. Slatter, whereas that particular record was made by me. The records held by Mr. Slatter are twin-screw, R.O.G., dis- tance 365 yards, and single screw hydro, off water, 35 sees. " It may be of interest to know that the actual model, when flown a couple of weeks after creating the record of 2 min. 49 sec, attained a duration of 5 min. 5 sec, and over one mile distance, before 300 witnesses at Leytonstone (unofficially). Of course this was a so-called ' fluke,' the natural duration of the machine being as shown by the ' record.' It is interesting to note that my machine in three con- secutive flights created the same performance as given in the first article. There was no glide, the air was damp and conditions generally unfavourable." Replies to Correspondents R. W. P. (ST. MARY).—As the K.M.A.A. is recognised by the R. Ae.C, and as the former always recognised the scientific aspect of model aeroplaning, we should say that as soon as the Association gets going it will encourage the construction of scientific models. But where is the line of demarcation ? The so-called flying stick can be a scientific machine, if constructed to prove the truth or otherwise of a premise, and in this respect it cannot be a matter of guess- work to achieve a duration of 5 mins. 5 sees., as Louch in- forms me he has done. My own opinion is that any model constructed according to scientific principles is a scientific model. Anyone can make a model resembling a full-size prototype that won't fly ; this is not a scientific model. 57
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