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Aviation History
1960
1960 - 2012.PDF
64 FLIGHT 16 SEPTEMBER MICROGRAIN NICKEL FOR AIRCRAFT COMPONENTS This illustration shows Micrograin applied to the leading edge of propeller blades. D. NAPIER & SON LTD. in their Spray mat information bulletin 1B/S11 say "We consider that having taken into account the aircraft forward speed the outboard section of the blade should be protected by a metallic coating. Extensive testing has indicated that the best coating for this purpose is an electroformed Micrograin nickel sheath bonded onto the heater mat." METACHEMICAL PROCESSES LIMITED HARDNESSVariable with control between 450-700 Vickers Pyramid Number. RESISTANCE TO EROSION BY WATERTests on tubular forms show no apparent effect on the surface of the nickel under conditions of a supposed component flying at extremely highspeeds through rain of tropical intensity. RESISTANCE TO DAMAGE AND DEFORMATIONTests show propeller edge electroforms to be. highly resistant to damage and deformation by, dust and stones. PROTECTION and MICROGRAIN are synonymous 41-43 & 47 GATWICK RD ' CRAWLEY ' SUSSEX TELEPHONE: CRAWLEY 25241/<S THIS COULD MEAN A LOT TO YOU is the latest and most effective extinguishant available. It is non-corrosive, non-toxic, suitable for all types of fires and gives greater safety in less space and weight. 51b The 51b capacity dual purpose fire extinguisher can be used either as a portable unit or as a fixed system protecting up to 4 separate spaces. Is operated manually or remotely by an elec- trically fired cartridge. Total weight ISilb (fully charged). Both units are A.R.B. approved — specially developed for use where weight saving is vital. Telephone: VIKing 6611 THE WALTER KIDDE COMPANY LIMITED BELVUE ROAD • NORTHOLT • MIDDLESEX
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