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Aviation History
1959
1959 - 0340.PDF
30 January 1959 167 THE INDUSTRY Filter in part section Palmer-Parmatic Filters AT the time of the Farnborough Show it was announced that- Palmer Aero Products Ltd. had acquired manufacturing rights for the filters designed by a well-known Canadian firm,Parmatic Engineering Ltd., and it is now possible to give details of the range available to the aircraft industry. The basic range covers a "virtually unlimited" number of fluids,at temperatures from —55 deg C to +200 deg C and at operating pressures up to 6,000 lb/sq in. Illustrated here is the Model D.1021, similar to that usedin the flying-control hydraulic system of the CF-100. Flowis 7 Imp gal/min at 3,000 lb/sq in, filtering D.T.D. 585at —55 deg C to +150 deg C. Degree of filtration is 5 mi-crons absolute and pressure- drop is 15 lb/sq in at 35deg C. (A) is a by-pass relief valve,so located as to prevent re- circulation of previously fil-tered dirt. It has a knife- edged seal which minimizesthe chances of particles being trapped, and its lightness inrelation to the spring load gives minimum g sensitivity.Cracking pressure is 80 ±20 lb/sq in. At (B) are portsmachined to take AGS 3017 and American AND Unions.(C) is a semi-automatic air bleed which operates whenthe bowl is removed and re- placed (some models have fully-automatic air bleeds), and (D) isan automatic cut-off valve which, together with the bowl design, prevents spillage of fluid on removal of the bowl. It is impossibleto remove the filter bowl without closing the cut-off valve and, conversely, impossible to reassemble without opening it. Nospring loads oppose the flow through the cut-off valve, and this, combined with smooth passages, contributes to the low pressure-drop through the filter. Neither valve relies on synthetic seals, and both can operate with a wide range of temperature and fluids. At(E) are the aluminium-alloy head and bowl, impulse fatigue-tested under a pressure rise of 0 to 3,000 lb/sq in, 100,000 cycles at6 c.p.s. sinusoidal wave form. Heigkt is 6|in, diameter 41in and total weight 6i lb. (F) is the sintered bronze permanent, cleanablefilter element; throw-away types can be used if preferred. This element, it is stated, will stand pressure impulses in either directionof up to 1,000 Ib/sq in. Features available, but not illustrated in this model, include amagnetic filtration stage; a by-pass warning or differential pressure-sensing device; and a wide choice of positions for inletsand outlets providing either vertical or horizontal connections as required. Palmer Aero Products Ltd. are at Herga House, VincentSquare, London, S.W.I. Keeping It Cool PRODUCED by the Northern Aluminium Co. Ltd., NoraMuctx is aluminium alloy sheet with internal systems of passages and ducts. Particularly designed for heat-transfer equipment of allkinds, it has possibilities for use in other fields, and among its aeronautical applications are those of skin-cooling panels forsupersonic aircraft and integrally cooled covers for pressurized radar equipment. The method of manufacture is extremely ingenious. A sheetof Noral alloy is superimposed on another, on which a fore- shortened impression of the required duct pattern has beenprinted, by a silk-screen process, in "stop-weld" ink. The sand- wich is then passed through a rolling mill. The pressure exertedcauses the alloy to unite in all areas except those that have been inked. The rolling of what is now virtually a single sheet is con-tinued until the required final gauge and size have been obtained. The sheet is then held between rigid plain platens and the printedareas are hydraulically inflated, thereby becoming ducts and chambers of the pattern required. Extremely complex patternscan be reproduced. The company's head office is at Bush House, Aldwych, London,W.C.2, and its Sales Development Division is at the works at Banbury, Oxfordshire. Smiths Re-alignment ^ ^ . "M EW divisions, known as Smiths Aviation and Marine Divi--1-1 sions, have been formed by S. Smith and Sons (England) Ltd. and a co-ordinating Board appointed to direct their activities.The divisions are made up of the following main and subsidiary companies: Smiths Aircraft Instruments Ltd.; Smiths IndustrialInstruments Ltd.; Waymouth Gauges and Instruments Ltd.; David Harcourt Ltd.; Kelvin andHughes Ltd. and subsidiary com- panies; and that part of the businessof S. Smith and Sons (England) Ltd. devoted to the manufacture or sale ofaviation and allied products. All these constituent organizations will continueto function through their respective Boards and executive managements. The chairman of the co-ordinatingBoard is Mr. Ralph Gordon-Smith (chairman and managing director ofS. Smith and Sons); the managing director is Mr. G. B. G. Potter, B.Sc,M.I.Mech.E., F.R.Ae.S. (managing director of Kelvin and Hughes Ltd.);and the other Board members are Mr. L. A. Morgan, A.F.R.Ae.S.(director and general manager of Smiths Aircraft Instruments Ltd.), W/C. H. M. Samuelson, R.A.F.O., A.M.I.E.E. (technicalsales director of Smiths Aircraft Instruments Ltd.), and Mr. G. S. Sturrock, M.A.(Cantab.), F.C.I.P.A. (commercialdirector of Kelvin and Hughes Ltd.). Smiths Aviation and Marine Divisions will have their adminis-trative headquarters at Kelvin House, Wembley Park Drive, Wembley, Middx. Supplementing Flexflyte - Mr. G. B. G. Potter its introduction to the aircraft industry about two yearsago, Flexflyte lightweight ducting—in a size range now ex- tending from half-inch to 8jin bore—has been adopted in itsstandard forms for many current military and civil aircraft. Its manufacturers, Avica Equipment Ltd., Mark Road, Hemel Hemp-stead, Herts, are now devoting a great deal of effort to an ever- increasing number of silicone rubber special shapes, to supple-ment Flexflyte and other Avica products such as stainless steel bellows and flexible pipelines. IN BRIEF The new head office address of Microcell Ltd. is Ingersoll House,9 Kingsway, London, W.C.2 (telephone Covent Garden 1262). * * * Mr. L. Malec, M.B.E., A.R.Ae.S., has resigned as head of thesales and service division of Air Trainers Link Ltd. and is being succeeded from February 1 by Mr. N. J. C. Hill, A.M.I.Mech.E.,M.C.A.I., A.R.Ae.S. The company has also announced the appointment of Capt. D. Wilson as sales manager. : , * * * •• •- - We regret to learn that Mr. Joe Lea, assistant managing directorof Avica Equipment Ltd., died on January 15 after a short illness. He joined the company on leaving the Royal Navy in 1946, andhad played an important part in Avica development since that time. • "..„"• * * * • •" Mr. T. A. Hayward, who since demobilization from the R.A.F.in 1946 has been with the Firth Cleveland group as a director of overseas companies in South Africa, the West Indies, Canada andthe U.S.A., has now in addition been appointed to the Board of Firth Cleveland Ltd., of which Mr. C. W. Hayward is chairman and managing director. * * * Graviner Manufacturing Co. Ltd. has formed a company inDusseldorf to look after its interests in Germany. The chief of these are airborne and industrial fire- and explosion-protectionequipment, diesel engine oil-mist detection and certain products in the nuclear-energy field; and the name and address of thenew Graviner-owned company is Deugra Gesellschaft fur Brandschutzsysteme m.b.H., Breite Strasse 3, Dusseldorf. * * * • Mr. N. M. Clark, B.Sc.(Eng.), A.C.G.I., A.M.I.Mech.E., hasbeen appointed chief engineer of Power Jets (Research and Development) Ltd. in succession to Mr. J. Hodge, who has joinedthe Holman Group. Mr. Clark has been with Power Jets since 1955, when he became a senior engineer in their consultancydepartment. His first appointment (in 1947) was with W. H. Allen Sons and Co. Ltd. of Bedford, where he was closely associatedwith the design of the first Allen gas turbines under Mr. A. W. Pope and was later appointed gas turbine development engineer.
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