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Venturi Air-Jet Vacuum Ejector For Sampling Air (1990)

Hill, Gerald F. ; Burney, L. Garland ; Sachse, Glen W. ; [et al.]

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Publication Date: 2019-07-12

Description: Venturi air-jet vacuum ejector pump light in weight, requires no electrical power, does not contribute heat to aircraft, and provides high pumping speeds at moderate suctions. High-pressure motive gas required for this type of pump bled from compressor of aircraft engine with negligible effect on performance of engine. Used as source of vacuum for differential-absorption CO-measurement (DACOM), modified to achieve in situ measurements of CO at frequency response of 10 Hz. Provides improvement in spatial resolution and potentially leads to capability to measure turbulent flux of CO by use of eddy-correlation technique.

Keywords: MACHINERY

Type: LAR-14024 , NASA Tech Briefs (ISSN 0145-319X); 14; 10; P. 86

Format: text

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