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WE publish in this issue a moving appeal from one who is an electrical expert, with wide prewar experience in general civilian installations, for a remodelling of the electrical system in large multiengined aeroplanes. He complains that those responsible for the design of these arrangements...
IN present day structural design we are very often faced with the problem of a strut of some particular constant cross section with partially fixed or free pinjointed end conditions and in which the line of action of the applied load does not coincide with the neutral axis of the strut. Indeed,...
In the First Russian Soaring Flight Competition at Feodosia Crimea in 1923, a very light allwing sailplane took part. The parabola plan shape of its wing, its small span and low aspect ratio raised general interest. The designer and pilot of this Flying Wing was the Russian student of...
THERE is an old saying that before you can cook your hare you must first catch it. The stressman might interpret this as before you can stress a redundant frame you must first find the redundancy.
A NUMBER of attempts have already been made to present a simple and easily understood account of wing flutter 1,2,3,4,5,6, but it appears that the subject is still obscure and difficult to many. Accordingly another elementary presentation of the subject is given in this paper, and the problem is...
THE forbearance of readers is requested at the outset for a personal note, considered to be inseparable from the basic purpose of this paper. The author's professional duties for many years prior to this war were concentrated on the specialist work of the design of distribution and transmission...
The Air Navigation regulations require that the certification of an aircraft before flight shall be made, in respect of the airframe, by an aircraft engineer licensed in Category A and in respect of the engines by an aircraft engineer licensed in Category C.
SOME truly remarkable results in highspeed or hyper milling of steel forgings have been attained on a production basis at Eastern Aircraft's Linden, N. J., plant. To date, work has been confined to tough 4140 chromemolybdenum steel forgings some annealed and some heattreated to 4041 Rockwell C...
An aircraft retractable undercarriage comprising a landing wheel strut having pivotally articulated upper and lower sections, a landing wheel carried at the lower end of said lower section, said upper section being ipivotally mounted at its upper end upon said aircraft, a worm wheel sector fixed...
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