Looking like a new design of rocket ready for launch into the night sky, this giant structure is in fact a variable-pitch propeller that will spend its working life in a totally opposite environment—under the sea. It is a double-acting variable pitch type on which the degree and direction of thrust may be varied by the axial rotation of the blades. This model, called the XX, is destined for a Royal Navy destroyer and is similar in design to more than 50 sets delivered to the Royal Navy, and to navies throughout the world. Over 3.9m (13ft) in diameter, it will be driven by one of the two Rolls-Royce "Olympus' 5 gas turbines which power the Type 42 destroyers and is designed to absorb 25,000 h.p. (18.642 kW).
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Bibliographic details
Press, 13 February 1981, Page 13
Word Count
128Looking like a new design of rocket ready for launch into the night sky, this giant structure is in fact a variable-pitch propeller that will spend its working life in a totally opposite environment—under the sea. It is a double-acting variable pitch type on which the degree and direction of thrust may be varied by the axial rotation of the blades. This model, called the XX, is destined for a Royal Navy destroyer and is similar in design to more than 50 sets delivered to the Royal Navy, and to navies throughout the world. Over 3.9m (13ft) in diameter, it will be driven by one of the two Rolls-Royce "Olympus'5 gas turbines which power the Type 42 destroyers and is designed to absorb 25,000 h.p. (18.642 kW). Press, 13 February 1981, Page 13
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