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Aviation History
1940
1940 - 0709.PDF
MARCH 14, 1940 Advertisements. 29 FIRE FIGHTING IN AIRCRAFT • THE R.A.F.'s NEW AUTOMATIC EQUIPMENT Reproduced by permission of the Illustrated London News SWITCH IN NOHMALI FIYING POSITION I THE TURN-OVER ORGRAVITY OPERATED SWITCH POSITION WHEN AIRCRAFT HITS THE GROUND SWITCH IN NORMALFLYING POSITIONTHE INERTIA OR CRASH OPERATED SWITCH SHOCK DAMPING MECHANISM THE CASE STOPS MOVING SUDDENLY PUSH BUTTON OR MANUAL CONTROL SWITCH Alt. TURNING OVER IN MAKING A FORCED LANDING AIRCRAFT CRASHING?" •-*"" OPERATED BY PILOT IN ANY MERCENCY FIRE FIGHTING EQUIPMENT IN A"BLENHEIM*BOMBER| COPPER CYLINDER CONTAINING METHYL-BROMIDE FIRE-EXTINGUISHER IN ENGINE NACELLE PERFORATED PIPES <D FOR SPRAYING EXTINGUISHER OVER HOT METAL PARTS OF A ROLLS-ROYCE AERO ENGINE AND INTO CARBURETTORS I WHEELS RETRACTED FIGHTING'AN INTERNAL FIRE IN A BIC BOMBER BY.MEANS OF A HAND EXTINGUISHER ENGINE ON FIRE IN THE AIR AUTOMATICALLY SMOTHERED BY THE OPERATING OF THE FUME. OR TEMPERATURE SWITCH FLAME SWITCHMOUNTED TO REAR OF ENGINEWHICH COMES INTO OPERATION WHEN SUBJECTED TO FLAME OR WHEN TEMPERATURE CEED£J40°CEN AN AVIATION DANGER OVERCOME: THE GRAV1NER SYSTEM OF PREVENTING FIRE WHHN AN AIRCRAFT CRASHES Anew fire extinguishing system, the Gravlner, has been adopted as a standard tt ng by the R.A.F. Its purpose Is to put out fires in the engine compartments 1 Cruh occu™. »nd to enable fires to be extinguished while In flight, or if the "raft overturns In making a forced landing. The extinguishing medium used Is Wre methyl-bromide contained in copper bottles under a high prejsure. Whan l» fluid Is discharged, It Immediately evaporate, with an Intense cooling effect. e «B»ih« li Inundated with the chemical, so that hot metal parts become GRAVINER MANUFACTURING CO. LTD • FIRST AVENUE HOUSE • HIGH HOLBORN • LONDON W.C.I instantly reduced in heat below the ignition point of petrol and the fire Is smothered. The Graviner system is operated by three simple switches; one, 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 ISO". The push utitton control enables the pilot to flood his engine compartments with methyl-bromide just before an expected crash
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