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Aviation History
1940
1940 - 0127.PDF
JANUARY 18, 1940 Advertisements. FIRE FIGHTING IN AIRCRAFT • THE R.A.F.'s NEW AUTOMATIC EQUIPMENT Reproduced by permission of the Illustrated London News WITCH IN NORMAL YING POSITION POSITION WHEN AIRCRAFTHITS THE GROUND THE TURN-OVER OR GRAVITY OPERATED SWITCH CAUSING ARM TO DROP BYTHE INERTIA OR CRASH OPERATED SWITCH I i SWITCH IN MOPMAl '••"] FLYING POSITION GRAVITY. & SWITCHES MARIN SHOCK DAMPIN MECHANISM SPRING LOADED ARM SWINGS FORWARDBY INERTIA WHEN THE CASE STOPS MOVING SUDDENLY RELEASING FIRE EXTINGUISH PUSH BUTTON OR MAN I CONTROL SWITCH AIRCRAFT TURNING OVER IN MAKING A FORCED LANDING OPERATED BY PILOT IN ANY EMERGENCY FIRE FIGHTING EQUIPMENT IN A BLENHEIM BOMBER MANUAL CONTRO SWITCH COPPER CYLINDER CONTAINING METHYL-BROMIDE FIRE-EXTINGUISHER IN ENGINE NACELLE PERFORATED PIPES CD FOR SPRAYING EXTINGUISHER OVER HOT METAL PARTS OF A ROLLS-ROYCE AERO ENGINE AND INTO CARBURETTORS WHEELS RETRACTED FIGHTING AN INTERNAL FIRE IN A BIG BOMBER BY MEANS OF A HAND EXTINGUISHERENGINE ON FIRE IN THE AIR AUTOMATICALLY SMOTHEREDBY THE OPERATING OF THE FLAME OR TEMPERATURE SWITCH FLAME SWITCH MOUNTED TO REAR OF ENGINE WHICH COMES INTO OPERATION WHEN SUBJECTED TO FLAME OR WHEN TEMPERATURE CEEOS I4O°CE AN AVIATION PANGER OVERCOME: THE GRAVJNER SYSTEM OF PREVENTING FIRE WHEN AN AIRCRAFT CRASHES A new fire extinguishing system, the Graviner, has been adopted M a standard fitting by the R.A.F. Its purpose is to put out fires in the engine compartments If a crash occurs, and to enable fires to be extinguished while in flight, or if the aircraft overturns In making a forced landing. The extinguishing medium used is pure methyl-bromide contained in copper bottles under a high pressure. When thl* fluid I* discharged, it immediately evaporates with an intense cooling effect. The englim Is inundated with the chemical, 10 that hot metal parti become Instantly reduced In heat below the ignition point of petrol and the fire it smothered. The Graviner system is operated by three simple switches; on», called the Crash Switch, acts with the speed of a gun the moment an aircraft crashes. The Gravity Switch operates when an aircraft inadvertently turns over in landing. The Flame-Operated Switch comes into action when the temperature round it reaches 150°. The push button control enables the pilot to flood his engine compartments with methyl-bromide just before an expected crash. THE GRAVINER MANUFACTURING CO. LTD • FIRST AVENUE HOUSE • HIGH HOLBORN • LONDON W.C.I
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