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Method and system for measuring sound velocityA method and system for determining the speed of sound in a fluidic medium by determining the travel time of an acoustical signal a predetermined distance in a fluidic medium by generating a cyclical reference signal of a predetermined frequency and transmitting a portion of the reference signal through the medium. The transmitted portion of the reference signal is received after travelling a predetermined distance in the fluidic medium. The cycles of the cyclical reference signal are counted during the period of time between the transmitting and receiving of the portion of the reference signal wherein the travel time of the portion of the reference signal, is the number of cycle counts divided by the frequency. The speed of the acoustical signal through the fluidic medium is a function of the path length divided by the travel time.
Document ID
20080008769
Acquisition Source
Goddard Space Flight Center
Document Type
Other - Patent
Authors
Boegeman, Dwight E.
Lowenstein, Carl D.
Spiess, Fred N.
Date Acquired
August 24, 2013
Publication Date
May 15, 1990
Subject Category
Acoustics
Report/Patent Number
Patent Number: US-Patent-4,926,395
Patent Application Number: US-Patent-Appl-SN-108794
Funding Number(s)
CONTRACT_GRANT: NAG5-320
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-4,926,395
Patent Application
US-Patent-Appl-SN-108794

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