FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1957
1957 - 0065.PDF
FOR THE LAND BATTLC: i ne Auster A.O.P.9 above is one of two for the South African Air Force. Differences from R.A.F. standard are the "Springbok" markings, the fitting of sunblinds and provision for an F.24 camera. On the right is a new, and attractive, view of the Fiat G.91 light ground-support fighter (Bristol Orpheus turbojet). Recognition Par Excellence ATEAM from the Royal Netherlands Air Force Aircraft Recog-nition School at Breda is participating for the fifth successive year in the tenth All-England Aircraft Recognition Competi-tion, which is being held at the Royal Institution, London, tomorrow, January 19. Fifty-six teams of three members each, are taking part in thecompetition, which is organized by the Aircraft Recognition Society. The Air Training Corps (which is entering 28 teams)and Service representatives compete for special trophies, but all competitors are eligible for the highest award, the Silver Hurricane,which has been held for several years by the Royal Observer Corps. Mr. Peter Twiss is to attend the competition as independentumpire and Mr. Peter Masefleld, president of the Society, will present the trophies. Analogue Computors in Helicopter Design THE application of electronic analogue computor techniques tothe study of helicopter design problems provided the subject for discussion at the January meeting of the Helicopter Associa-tion, which took place last week. The lecturer was Mr. B. H. Venning, B.Sc, of the electronics department, SouthamptonUniversity. After giving background information on the origins and generalcharacteristics of analogue computors, Mr. Venning went on to outline recent work by his department in the construction of acomputor designed specifically to solve equations arising from analysis of the ground-resonance problem in single-rotor helicop-ters. A research grant had been made by the Ministry of Supply for the purpose and there had been close collaboration with anumber of helicopter constructors in the industry. The analogue computor constructed by the University wascapable of dealing with four linear second-order differential equa- tions and the speed at which solutions could be obtained made itpossible to prepare design curves for a wide variation of damping and stiffness in the undercarriage and blades. These curves gavean indication of the unstable ranges and from them it was possible to determine the degree of damping necessary to remove theinstability. The work was still in progress and a number of refinements hadbeen planned for the future. One of these was to enable the computor to deal with various non-linear parameters, such aschanges in stiffness when a shock-absorber became compressed, and for simulating damping forces other than those due to viscousdamping. Use of the new computor techniques would make it possible to allow for effects such as these which occurred in prac-tice but which could not easily be incorporated in straightforward mathematical analysis. R.Ae.C. Appointments T^HF, Royal Aero Club announces that W/C. H. G. L. Allsop-*• has been appointed house secretary as from January 1, 1957. It is also stated that G/C. J. F. H. du Boulay, C.B.E., D.F.C., is shortly leaving the service of the Club in order to take up acommercial appointment. Constitution of two R.Ae.C. committees for 1957 is as follows:House Committee.—L. R. E. Castlemaine; Maj. A. J. Michell-Clarke; J. G. Crammond; E. J. Earnshaw; G. B. Fellows S/L. W. A. R. Harris;S/L. C. K. Turner-Hughes; R. G. Kent; E. H. W, Lucas; G/C. C. S. Monce; Cant. J. G. Renton; Maj. J. Stewart; L. Swan; J. C. C. Taylor;Capt. R. H. Walmsley; G. H. Wilkinson. Aviation Committee.—Air Chief Marshal J. N. Boothman; B. F.Collins; H. Best-Devereux; J. J. Dykes; Lt-Col. C. F. H. Gough; R. E. Hardingham; S. Scott-Hall; F. N. Hillier; W. I. Scott-Hill; A. F.Houlberg; V. A. M. Hunt; N. Jones; H. B. Lindsay; Maj. R. H. Mayo; G/C. E. L. Mole; Maj. H. A. Petre; B. J. Snook; J. N. Somers;Whitney W. Straight; J. C. C. Taylor; P. A. WUls; F. Woodhead. WASH AND BRUSH UP in the Boeing Airplane Company's flight-test centre at Seattle before another day's work. In the foreground is the 707 prototype; next are the first two KC-135 military tankers; and last a B-52 bomber. The 707 now has 650 flight hours behind it, and its nose bears the insignia of eleven airlines which have already ordered production versions to a total of 132 aircraft. THRUST BOOSTING: Centre, above, the J 32B all-weather fighter development of the Saab A 32A Lansen attack aircraft has a later series of Rolls-Royce Avon with enlarged afterburner, as noted in a news item opposite. Below it is the Leduc 022, France's supersonic ramjet-development aircraft. The 6,600 Ib thrust of an Atar turbojet will be supplemented at full speed by I32J00Q Ib ramjet thrust.
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
