Development of a Laser Velocimeter to be Used in AEDC Wind Tunnels.
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN
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The report summarizes a three-year analytical and experimental program to develop a laser Doppler velocity LDV instrument for measuring velocities of flowing fluids. The electro-optical instruments are being developed for enhancing the measuring capabilities in the AEDC wind tunnels. The basic design parameters of the input-aligned optics LDV system and, in particular, the development of a self-aligning system to obviate the basic problems inherent with previously conceived systems, are described in detail. The design and the progress are presented on a direct readout system to determine directly three orthogonal components of velocity. A number of significant proof-of-principle experiments covering a wide variety of flows, both liquid and gaseous, are discussed. Included are the results of a VSTOL wind tunnel calibration study verifying the superior performance of the LDV for velocity determinations and boundary-layer measurements. Author
- Lasers and Masers
- Test Facilities, Equipment and Methods