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Aviation History
1961
1961 - 0121.PDF
FLIGHT, 27 January 1961 furnishing and Finishing... te-establish passengers' supply by means of transfer valvesiriKing the two lines. The Walter Kidde Co Ltd, Belvue Road, Northolt, Greenford,Middlesex, were early in the field with passengers' emergency oyvgen systems for high-flying commercial aircraft, and a Kiddesystem of oxygen presentation will be employed with the Normal- a - convertor in the VC10. In this the individual masks are builtinio boxes in the luggage racks, and are released to hang down- v jrds in the event of decompression. At each stowage box is apoint enabling oxygen to be tapped for individual passengers who may be distressed, quite independently of pressurization failureand activation of the whole system. Kidde also manufacture portable oxygen breathing sets whichcan be easily installed in seat stowages or dispensed by the cabin staff, in aircraft without installed provision for oxygen. Thesesets comprise a lightweight cylinder with oxygen stored at 1,8001b/ sq in with a head to which up to four outlets can befitted. The set is used in conjunction with a very light hand- held plastic mask.Escape chutes are now common on the larger passenger air- craft. Some of these are of rubber and are inflated with storedCOi when required. A simpler type is a shaped and reinforced nylon sheet, attached at one end to the aircraft threshold and heldby two people at the ground end. Examples of the latter type are manufactured for installation in BEA Viscounts by LatexUpholstery Ltd, 41 Lonsdale Road, London, Wll. For survival after ditching an essential part of the sophisticateddinghy packages carried in contemporary commercial aircraft is a means of deriving potable water from the sea—as it is impractic-able in inflatable dinghy packages to have the tanks of fresh water carried in ships' lifeboats. The Permutit Co Ltd supply majorairlines, including BOAC, and dinghy manufacturers with de-salt- ing kits, which are improved versions of those developed duringthe Second World War. The kits include charges of silver- barium-zeolite, to be placed in the purifier bag which is filled withsea water. After dissolving in sea water, the silver-barium-zeolite is left for about half an hour to do its work of precipitating dis-solved salts. Drinkable water is then squeezed through an integral filter in the bottom of the bag, which holds back the precipitatedsalts. It runs through a tube directly into the mouth or into a receptacle. 121 ICI Perspex acrylic sheet and Darvic sheet used for window surrounds and fitments in Comet 4 toilet compartment Decorative panel in Warerite (Bakelite Ltd) for BEA Viscount Permutit sea-water de-salting kit LIGHT IN FLIGHT "Modern air travel," hardened critics often say, "is dreadfullyboring—one can only sleep, eat or read." For the last of these functions good lighting is needed, and it is preferable for thesecond, though not, perhaps, for the first. Aircraft lighting is tn?lh/T field in which the General Electric Co Ltd have estab-sisned a big reputation. Contemporary aircraft have fluorescent !'r A"V systems and GEC have developed systems for BEA and el guards with fluorescent tubes concealed behind ceiling IHalf the tubes are operated by 28V d.c. transistor-invertorsm the batteries and the remainder, through control gear,the engine-driven 115V, 400-cycle alternators. TCA's Van-
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