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ARMAMEN T MEN MARKET SPIN-OFF TECHNOLOGY Services launch Defence Technology Enter- prises Lt d wit h a selectio n o f RARD E goodies develope d for the motor and transport industries . SPECTS of tribology are seen in A the several automotive-related "goo d ideas" recently announced by Defence Technology Enterprises Ltd, a new trading division of the Royal Armament Research and Developmen t Establishment (RARDE). The DTE set-up has the specific function of assisting in the transfer of spin-off technology into industry. Examples seen at a RARDE's Chertsey open day included new developments in oil-cooled multi- disc heavy vehicle brakes; a dif ferential steering system, giving tighter-turn geometry for tracked vehicles; a hydrostatic variable transmission system claimed to be cost- and power-efficient, and a crown-cam gearbox. The last-mentioned, an Admiralty Research Establishment contribu tion, is said to have high power-to- weigh t ratio advantages, high mechanical efficiency, low wear and low inertia and possibly zero backlash — all within the same design configuration. Applications Incorporating a rigid thermo from a new composite researched noted varied from windscreen plasti c to bond wood veneer by the Royal Aircraft Establishment. wipers to the gear mechanisms of a Composite materials using wood imparts better impact properties crane. veneers for at least one of the rein tha n those of conventional The system is claimed to be forcing components offer a number plywood . Alternatively, use of suitable where precise control of of significant advantages, including rubber-based adhesives makes an start-stop motion is essential, and energy-absorban t laminate, or weight-saving and a means of rigi where space and weight are at a "rubber-wood" . A reinforced dity in the uncured state. Improved premium. stiffness and breaking strength (for thermoplastics laminate suitable A different approach to effective a given weight) are obtained by the for the car industry has also been damping is seen in an anti-vibration use of pyrolised veneers. developed by RARDE. unit where the vibrating element is mounted between the upper and lower bellows systems. The main excitation frequency of the suspen ded equipment is monitored by a sensor and the response to the absorber is tuned accordingly by changin g bellows pressure, so giving different effective resis tances. A typical application is said to be in reduction of vibrations from rotating machinery. The materials field is to benefit 152 INDUSTRIAL LUBRICATION AND TRIBOLOGY, July/August 1987
Industrial Lubrication and Tribology – Emerald Publishing
Published: Apr 1, 1987
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