1976-02-01

A Ducted Propulsor Demonstrator 760470

The Ducted Propulsor is proposed as a means of quiet propulsion. In order to demonstrate that very low levels can be realistically achieved, a unit has been built based on a conventional 285 h.p. aircraft reciprocating engine.
The problems associated with the design of such a power plant, which include keeping the cost and weight of a production unit in perspective, are discussed along with the chosen solution. The test results will be published later.

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