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Aviation History
1954
1954 - 0725.PDF
19 MARCH 1954 FLIGHT 3 DWWPMfflARETANTISKID UNIT FOR NEW HIGH-PERFORMANCE AIRCRAFT Landing Runs Cut by 301 Now standard equipment on most of Britain's 'super- priority' Service types, as well as on the most famous Civil aeroplanes, the Dunlop Maxaret Anti-Skid Unit is clearly the greatest advance in aircraft braking since the plate brake. It is simple . . small . . . compact . . . superbly efficient. Only when the skidding point is reached does the unit momentarily release the brake pressure to prevent an actual skid developing. Reduced braking distances Practical tests on many different types of aircraft have proved that the Maxaret actually reduces landing runs up to 30%. The military advantages of this advance are obvious. On Civil aircraft it means—chief amongst many other things—more profitable permitted payloads. WHAT THE PILOTS SAY... The following extracts are taken from actual flight test reports of leading British, Commonwealth and Con tinental Aircraft: "Braked run of 2580 ft. re duced to 1620//." "Brakedrun without Maxaret 1570 ft., two tyres burst; braked run with Maxaret 1055 ft., tyres unmarked." "They effectively increase length of 2000 yd. runway by 800 yds." " Very satisfactory result with reduction of landing runs Oj approximately 30%." " Take-off and landing easily performed on runway covered with ice. Flying impossible without Maxaret." Associated advantages The Maxaret Unit, which is standard and makes no additional demands on aircraft services, totally prevents wheel skidding, and tyre 'scrubbing' damage, prolongs tyre life, and quietly and unobtrusively provides added security in emer gency. Designed specifically for operation with Dunlop tyres, wheels and brakes, the Maxaret is suitable for most types of aircraft and landing wheel arrangements. Technical angle The Maxaret is incorporated in the brake circuit. It consists of a brake pressure regulator valve controlled by a flywheel which is housed in a rubber-tyred shell rotated by direct contact with the main landing wheel. Full technical details are available from the Dunlop Aviation Division, Foleshill, Coventry. de Havilland Comet Tests Remarkable Results A series of tests by the de Havilland Company on a Comet fitted with a Dunlop Maxaret installation produced the following results: Saving of up to 32% in the distance of normally braked landing run. Reductions of braking distance up to 37.5% in simulated emergency landings, e.g. baulked take-off. Dunlop makes things better for everyone n/«03
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