Development of a Laser Velocimeter to be Used in AEDC Wind Tunnels.
Abstract
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 V/STOL wind tunnel calibration study verifying the superior performance of the LDV for velocity determinations and boundary-layer measurements. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1970
- Accession Number
- AD0871321
Entities
People
- A. E. Lennert
- D. B. Brayton
- F. L. Crosswy
Organizations
- Arnold Engineering Development Complex