Accession Number : AD0286256

Title :   FLUID AMPLIFICATION. I. BASIC PRINCIPLES

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : WARREN ,R.W. ; PEPERONE,S.J.

Report Date : 15 AUG 1962

Pagination or Media Count : 1

Abstract : Studies made on pure fluid amplification resulted in an over-all program for design and development of fluid amplifiers, both bistable and proportional, with no moving parts. Both flow and pressure at the receiving apertures of the proportional-type device depend on the power jet strength and flow direction. Since the flow direction is controlled by a low-energy jet, the ouput from the apertures is an amplified version of the control jet input. The energy controlled in the amplifier is an order of magnitude larger than the controlling energy. If the walls are relatively close to the interaction region, the stream has a marked tendency to attach to one of the walls. This wall-attachment phenomenon causes the fl id stream to shift completely from one output to the other in response to a control jet pulse, thereby permitting bistable operation. For a proportional unit, the walls are positioned much farther out to minimize the wall effect. Specifically covered in this report are the effects of the wall and splitter positions in bistable operation, and an analysis of the gain forportional operation. (Author)

Descriptors :   *FLUID FLOW, *FLUID MECHANICS, CONTROL SYSTEMS, DESIGN, HYDRAULIC EQUIPMENT, PNEUMATIC DEVICES, PRESSURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE