The Design and Construction of a Mach-Zehnder Interferometer for Use with the GALCIT Transonic Wind Tunnel

Author: Ashkenas, Harry Israel

Year: 1950

Degree: Engineer's thesis

Advisor: Liepmann, Hans Wolfgang

Committee Member: Unknown, Unknown

Option: Aeronautics

DOI: 10.7907/D0V1-MJ80

Abstract

A Mach-Zehnder Interferometer has been designed and constructed for use in conjunction with the GALCIT Transonic Wind Tunnel. The instrument is to be utilized in making detailed density measurements of supersonic air streams. The design of the instrument is such that, contrary to general wind tunnel practice, both light beams of the interferometer traverse the test section of the wind tunnel in an effort to minimize boundary layer corrections. A detailed description of the instrument is presented, as well as a “cook-book” adjustment procedure. A discussion of the limitations of the instrument is included.

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