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Aviation History
1949
1949 - 1592.PDF
556 FLIGHT, 15 September 1949 (Top left) A representative range of Marshall cabin atmosphere control equipment was shown by Sir George Godfrey and Partners Ltd. (Top right) A full inspection of the latest form of British-built Link Trainer could be made on the Air Trainers stand. (Bottom left) Representative of their wide range of equipment, Smiths Aircraft Instruments exhibited the S.E.P.I., a typical variety of aircraft instru- ments and a demonstration unit of the Waymouth fuel contents gauge system. (Bottom right) Examples of their highly specialized sheet metal work were shown by the famous Coventry firm of Cornercroft Ltd. "Static" Highlights tainer are grouped a duplex hydraulic pump driven by an electric motor; delivery and scavenge niters, solenoid valves to control water flow; a thermal safety switch; and a suppressor and relay switch for the motor circuit. The Ministry of Supply stand carried many interesting exhibits, particularly that of a two-step rocket lor super- sonic research. In addition, there was a neat demonstra- tion model of the action of after-burning as applied to turbojets. (As noted on other pages, a Meteor and Vam- pire employing the re-heat system were included in the flying display.) The demonstration model comprised a small blower delivering air down a 3Jin-diam.et.er glass pipe in which was arranged a four-prong array of small- bore pipes through which Calor gas was ejected. The gas was delivered on to the apices of four steel cones, the pur- pose of which was to diffuse the stream and promote turbu- lent mixing, the gas being ignited in the first place by spark ignition after which, of course, burning was con- tinuous. For the safety of spectators the efflux was de- flected by a curved steel baffle plate. In addition to their well-established ejector seat. Martin- Baker Aircraft, Ltd., also displayed their newst automatic model of this most necessary item of safety equipment. With this latest form of seat, the pilot's parachute is stowed in the seat chassis and is opened automatically even though the man may be unconscious. As long as the pilot has sufficient wits to pull down the face blind, his safe ejection is assured. On ejection, a time switch is triggered for a period of six to nine seconds, after which the drogue parachute is released from the seat and auto- matically pulls out the pilot's 28ft canopy, releasing him at The latest develop- ment of the Martin- Baker ejector seat provides automatic opening of the pilot's parachute.
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