1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031686
WE are becoming increasingly exercised over the continuance of a trend in connexion with commercial transport aircraft to which we have, in fact, called attention in the past.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031687
THE study of the vibration of a straight elastic bar is a very old one. The vibrations may be classified as lateral or transverse torsional and longitudinal. The first two are the more important ones and also the more difficult. We shall consider the lateral and torsional vibrations of a bar clamped at one end and free at the other, which may rotate like the blades of an airscrew. Both cases, rotation or none, are important problems of civil engineering, marine and aeronautical engineering and the theory of elasticity.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031688
THE work described in this paper was undertaken to investigate the behaviour of a magnesium alloy beam clastically and plastically deformed by a uniform bending moment at room temperature. The object of the work was to obtain relations between stresses and strains in the beam, to afford a basis for design, in cases where it is required to submit magnesium alloy structures to bending stresses exceeding the elastic limit.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031689
THE U.S. Air Force recently ordered twentyseven C97 Stratofreighters in addition to the thirteen previously ordered, some of which have been delivered. These are the cargo version of the Boeing Aircraft Company's Stratocruiser.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031690
BEFORE the war scientific filtration as applied to aircraft was a little known subject. The prime concern of the people developing aircraft in those days was the attainment of higher power output, ceiling and maximum speed. More streamlining was the cry and, although filters were available, they were rarely used.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031691
NETWORKS of the type considered are of practical importance as components of automatic control systems and similar devices. The electrical variety is exemplified by the wellknown phaseadvance network, while analogous arrangements of dashpots and springs arc often used to obtain the same effect.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031692
Mr Rissik needs little introduction to engineers, least of all to readers of Aircraft Engineering, since much that is contained in his latest book on Quality Control was foreshadowed in articles published in this Journal during the war years.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031693
Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Notes of the United States National Advisory Committee for Aeronautics and publications of other similar Research Bodies as issued
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031694
The Council of the Helicopter Association of Great Britain Ltd. announce that the prize for the 194748 competition for an essay on The Safety of Rotary Wing Aircraft has been awarded to D. R. Garraway, B.Sc.Eng., for his essay entitled The Structural Airworthiness of Helicopters with particular reference to Fatigue Failure, which is reproduced in the current number of the Society's journal.
1948 Aircraft Engineering and Aerospace Technology
doi: 10.1108/eb031695
These details and drawings of patents granted in the United States are taken, by permission of the Department of Commerce, from the Official Gazette of the United States Patent Office. Printed copies of the full specification can be obtained, price 10 cents each, from the Commissioner of Patents, Washington, D.C., U.S.A. They are usually available for inspection at the British Patent Office, Southampton Buildings, Chancery Lane, London, W.C.2.
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