Galt Collegiate Institute and Vocational School - Specula Galtonia Yearbook (Galt, Ontario Canada)

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90 SPECULA GALTONIA sa FE NG ' Dept. Editors: JAMES WILLARD, JESSIE HINRICH Model Airplanes as a Hobby OME people make the mistake of thinking that building a flying model aeroplane is mere child's play. How- ever, this is not the case, as it is actually developing from a hobby to a science. Many men, boys and girls are taking up this interesting craft. Those who know about model planes un- derstand, automatically, about man-carry- ing ships. William B. Stout, designer of the Ford-Stout all metal air-plane, learned about areonautics from the models he started building more than thirty years ago. Commander Richard E. Byrd and other aid leaders have profited by studying models. When a new airplane is designed, a min- iature of it is built and tested in a wind tunnel. This is a tunnel-like enclosure through which a blast of air is driven. The model is fastened to a type of weighing scale, and careful recordings are made of its reactions. By taking these findings on a much larger scale the designer knows almost exactly how the large plane will perform. A great deal of accuracy is required in the building of models. Parts must be carefully cut to the proper dimensions. It would not do to have them overweight with overstrength, nor underweight with very little strength. It is often a slow job constructing a model, but when it is Hn- ally completed and it flies well, one feels rewarded for his efforts. HARRY ZINN, Form T2A Radio and the Talkies ADIO 'has developed rapidly since 1901 when Marconi sent the first signals across the Atlantic. The talkies and public address sys- tems are very closely associated with ra- dio, the chief diHerence being that in radio the sound signals are picked up from the air and in the talking pictures they are reproduced from recordings usually made on wax discs synchronized with the film. In both cases the sound signals are put through amplifiers, the ones used in the talkies being much more powerful than in radio, as much more volume is re- quired. The dynamic speaker has done much towards better reproduction both in radio and the popular talking pictures. It can handle a much larger amount of power than the older type and for this reason has become the most widely used. Radio has also proven itself invaluable in aviation, as it keeps explorers and long distance iiiers in touch with the world. It will probably be one of the most im- portant factors in helping to combat and conquer fog, the airplane's greatest men- ace. IVAN HOLLOWAY, Form T2A