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Aviation History
1933
1933 - 0112.PDF
FLIGHT, JULY 13, 1933 hexagon jointing ferrules and finally the internal linkage is made up in one length. The controls can be despatched within about 24 hr. of receiving the templates, and all that the aircraft manufacturer has to do is to insert the various lengths of casing tube in position, join them up by means of the ferrules, clip the casing tube in position, insert the linkage and the control is ready to do its work. The draw ing office is thus completely relieved of much detailed work and the time for installation is negligible. A special control for Mr. and Mrs. Mollison's " Dragon " The Sea farer was promptly completed in this manner. Twenty- three aircraft manufacturers are now regularly using the Simmonds-Corsey system in over 50 different types of 3.ircr3,ii" AERODROME BEACONS C ODIUM lamps have already proved their use on roads and are now being taken up by aerodrome authorities. On the Waalhaven Aerodrome at Rotterdam an air beacon, containing Philips' " Philora " sodium lamps, has been installed. At Amsterdam Aerodrome also these lamps have been installed on the aerial tower at a height of 50 yd. each ; this latter beacon has a luminous intensity of 2,000 c.p. The lamps are supplied with A.C. and burn at the normal voltage. Pilots have reported that they can see these lights 40 miles distant. The Philip Sodium lamp is not a filament lamp, but a gas discharge lamp. The light differs in many ways from the ordinary bulbs used hitherto in that the radiation yielded is practically monochromatic, whilst there is also a noted absence of glare. Sodium lamps, throwing out a beam which is nearly yellow in colour, practically conquer fog, and are therefore ideal for use on aerodromes. INSTRUMENTS ""THOSE who interest themselves in the fitting of instru-A ments to aircraft would do well to study those manufactured by Morell. They are ball-bearing, using a special design of ball race, making them very free running and assuring long life with little attention. The tacho meters, so the makers claim, are provided with such an efficient inertia damping mechanism, that they are dead- beat, yet cause no friction, and may be driven in any direction of rotation. Their long-distance tachometer is a small plant generating an alternating current, thus eliminating the use of a commutator and brushes, which up to the present have been the main source of defects. The generator is simple, dustproof and foolproof, its net weight being 1£ lb., and that of the indicator 2 lb. The Morell anemometer is a combination of the Robinson Cup Cross and centrifugal tachometer. On the extension of the pendulum shaft the cup cross is located. When exposed to an air current the cup cross receives a very definite average angle velocity in such a manner that the average absolute speed of the cup centre is in approxi mately constant relation to the wind velocity. Morell instruments were used by Costes and Bellonte in their non-stop flight between Paris and New York. GOGGLES JV/IESSRS. E. B. MEYROWITZ have made a change in *" the cushions of their goggles, which in future will be red instead of white and of home manufacture. All Luxor Goggles will in future be fitted with these red rubber cushions embossed with the word " Luxor." &ook Rwieua " The Aeronautical and Miscellaneous Notebook of Sir George Cayley." Edited by J. E. Hodgson (E. W. Heffer, Cambridge). Obtainable from FLIGHT Office. Price Is. 6d. It is not often that theory foreruns practice by a whole century, especially when connected with things mechanical. It must be admitted, however, that such has been the case with aviation, though probably few people realise it. Sir George Cayley, who has justly been called the '' Father of Aeronautics," first studied, and worked out, the theory of flying at the beginning of the last century, and modern developments have proved these theories to be correct by putting them into practice successfully. Until recently it was thought that the notebooks of Sir George Cayley had been lest, but Mr. J. E. Hodgson, the Hon. Librarian of the Royal Aeronautical Society, obtained permission from the Cayley family to make a search, and the notebook was found—this now being published, with the permission of Sir Kenneth Cayley. under the title of " The Aeronautical and Miscellaneous Notebook of Sir George Cayley." This book is very well worth reading. At a time when all sorts cf fantastic, almost incredible, theories concern ing flying were floating about various European countries, Sir George Cayley, in his Yorkshire home, had perceived the truth. Apart from clear analyses of the flight of birds, which must have been the result of many hours of careful study and observation, this book contains a number of sketches illustrating methods of wing constructing, which help to prove that his theories of aerodynamics anticipated those of a much later date. The method of handling his subject by Mr. Hodgson leaves nothing to be desired. " Scale Model Aircraft," by James H. Stevens (John Hamil ton, Ltd.). Obtainable from FLIGHT Office. Price Ss. 6d., post free. Judging from the large number of inquiries we receive requesting particulars and details of various types of air craft for the purpose of constructing scale models (apart from flying models), there is no doubt that this is a very popular—and increasing^ so—hobby. There are many reasons for this ; there is your aviation enthusiast who is keenly interested in all aeroplanes, and, in addition to collecting photographs and cuttings of various types, is anxious also to possess exact scale models of favourite types. Then there is the person who desires to possess models of some particular type or types in which he is personally interested for some reason or the other, while much enjoyment can be obtained with a collection of scale models by " making up " a layout of an airport complete with hangars, clubhouse, trees, etc., or arranging forma tions, evolutions, aerial combats, etc., against a suitable background and photographing the result—which can sometimes be most realistic. Not the least fascinating side of collecting non-flying scale models of aeroplanes is their construction, and this, once you know how, is not a particularly difficult job. " Scale Model Aircraft," by James H. Stevens, is an excellent book which tells you how to make these models and all about them. It is profusely illustrated, not only with constructional details, but with complete views and scale drawings of several well-known types of aircraft. These latter include the following: Hawker "Hart'' Armstrong Whitworth A.W. XVI; Bristol "Bulldog"; D.H. " Dragon " ; Bristol Fighter ; S.E.5 ; Sopwitb " Pup " and " Snipe " ; Spad S.VII ; " Albatros D.V. ; Roland D.ll, and Hannoveraner. An example of a model aerodrome is also given. Anyone, expert or otherwise. who wishes to construct scale model aeroplanes will find this book extremely helpful. " The ' Autogiro ' and How to Fly It," by Reginald Brie (Sir Isaac Pitman). Obtainable from FLIGHT Office. Ss. 6d., post free. This book of 82 pages contains much instructive anc interesting matter connected with the " Autcgiro/(' Thf author is probably one of the most experienced " Auto giro " pilots we have. He answers a series of carefully chosen questions in a lucid manner, interpolating them with many useful diagrams and photographs. No wile claims are made, and it is not concealed that " Autogifj ing " or " Giropiloting " or whatever the technical wore should be, is not the same as more orthodox flying. The book is not an advertisement and avoids " puff " with admirable reserve. It comprises what is virtually a lay course for the pilot or owner and also includes maintenance and adjustment notes. A very short summary of the theory of the " Autogiro " is given as lucidly as the sub ject allows. Altogether it is a most useful and instructive book. 712
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