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Aviation History
1954
1954 - 1619.PDF
8 FLIGHT 4 JUNE 1954 MACH SWITCH This is a pressure-ratio switch operated by forces proportional to pitot and static pressures. It may be used to operate a warning or control device such as alteration of trim, when aircraft approaches a pre-set mach number. The range of this instrument is 0.72 M to 1.5 M with an accuracy of +0.005 M of the pre-set Mach Number with a differential of 0.005 M altitudes below; and to within 0.01 M at altitudes above 40,000 feet. TEDDINGTON A AUTOMATIC CONTROLS TEDDINGTON CONTROLS LTD., CEFN COED, MERTHYR TYDFIL, SOUTH WALES (Merthyr Tydfil 666) T/103 illlllllllllllllll!l!lllllllllll!l!llll!lllllll!llllllllll!l!llllllllll!l!llllllllllllllllllllllllllllllll!lllllllllllllllllllllllllllllllllllllllllllll JET TANKS LIMITED Directors: F. G. Miles, F.R.Ae.S., G. A. Richards, M.C.) Designers and Manufacturers of Non-Metallic Tanks and other Aeronautical Components. Production and Development Engineers in "Durestos" and Fibreglass. Aeronautical and General Engineers — Sheet Metal Fabrication. ] 3 RED PLACE, GREEN STREET, LONDON, W.I | I Telephone: MAY fair 9358/9 | 'Works: London and Shorehanvby-Sea fftiiiiiiiiiiimiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiM
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