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The performance characteristics of geometrically similar bistable amplifiers

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Author
Sarpkaya, Turgut
Date
1972-07-17
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Abstract
The results of a comprehensive study of the comparative performance characteristics of geometrically similar vented and unvented bistable amplifiers, together with their actual dimensions, are presented. The Reynolds number in the tests ranged from 9,750 to 60,000, Mach number from 0.07 to 0.42, and the power jet velocity from 75 to 460 ft/sec. Each amplifier as conceived and designed was capable of giving a maximum of geometric flexibility which enabled a systematic evaluation of the shape and location of the splitter plate and Coanda-walls. It was found, within the range of Reynolds and Mach numbers tested, that certain gain characteristics and the range of operation of a given unvented amplifier overlap, within a narrow range of P subscript o /P subscript s and Q subscript o /Q subscript s values, with the corresponding gain characteristics and the range of operation of the vented amplifier. It was also found that a convex-walled amplifier with proper geometry exhibits considerably better performance characteristics than are normally associated with such devices. Finally, a new bistable amplifier with vents located in the load ports has been introduced.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/29451
NPS Report Number
NPS-59SL72071A
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