Probe for measurement of velocity and density of vapor in vapor plume
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United States of America Patent
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Mar 11, 1997
Grant Date -
N/A
app pub date -
Nov 21, 1994
filing date -
Nov 21, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A probe which directs a light beam through a vapor plume in a first direction at a first angle ranging from greater than 0.degree. to less than 90.degree., reflecting the light beam back through the vapor plume at a 90.degree. angle, and then reflecting the light beam through the vapor plume a third time at a second angle equal to the first angle, using a series of mirrors to deflect the light beam while protecting the mirrors from the vapor plume with shields. The velocity, density, temperature and flow direction of the vapor plume may be determined by a comparison of the energy from a reference portion of the beam with the energy of the beam after it has passed through the vapor plume.
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