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Quasi non-intrusive sampling and analysis of gases associated with the boundary layer on the tethered satellite and similar supersonic and hypersonic research vehiclesThe effect that one candidate inlet, an assembly of capillary openings in a thin glass plate (a multichannel plate), might have on the overall sampling process is considered. The flow characteristics of the plate, under a variety of conditions of external pressure and mass flow, is evaluated. A review of capillary flow theory is presented with some development of the pertinent equations. The predicted mass flow will be compared to that determined perimentally to assess the effect that mass flow through one capillary might have upon a neighboring capillary. Mass spectrometric measurements of mixtures flowing through the multichannel plate (MCP) is also considered. In the first part of the experiments, the flow was in a direction normal to the surface of the plate. The experimental gases were Argon and mixtures of carbon dioxide in air. Ongoing experiments are discussed which are conducted with the flow parallel to the surface of the plate, a simulation of the kind of flow that a flight vehicle would experience.
Document ID
19850022827
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Fishel, C. (Old Dominion Univ. Norfolk, VA, United States)
Niederriter, S. (Old Dominion Univ. Norfolk, VA, United States)
Brown, K. G. (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 5, 2013
Publication Date
June 1, 1985
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NAS 1.26:176075
NASA-CR-176075
Accession Number
85N31140
Funding Number(s)
CONTRACT_GRANT: NAS1-17099
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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