Laser Doppler Velocimeter Development

You are here: Homepage > Search

Laser Doppler Velocimeter Development

Lee Seegmiller, H. / Bader, Jan B. / Cooney, John P. / DeYoung, Anemarie / Donaldson, Ralph W. / Gunter, William D. / Harrison, Dean R.

Abstract

A new two-channel laser Doppler velocimeter developed for the Ames High Reynolds Channel No. II is described. Design features required for the satisfactory operation of the optical system in the channel environment are discussed. Fiber optics are used to transmit the megahertz Doppler signal to the photodetectors located outside the channel pressure vessel, and provision is made to isolate the optical system from pressure and thermal strain effects. Computer-controlled scanning mirrors are used to psoition the laser beams in the channel flow. Techniques used to seed the flow with 0.5-μ-diam polystyrene spheres avoiding deposition on the test-section windows and porous boundary-layer removal panels are described. Preliminary results are presented with a discussion of several of the factors affecting accuracy.

Access

Check access

Check availability in my library

Order at Subito €

Export, share and cite

Document information

Title :

Laser Doppler Velocimeter Development

Contributors:

Lee Seegmiller, H. (author) / Bader, Jan B. (author) / Cooney, John P. (author) / DeYoung, Anemarie (author) / Donaldson, Ralph W. (author) / Gunter, William D. (author) / Harrison, Dean R. (author)

Published in:

IEEE Aerospace and Electronic Systems Magazine ; 1 , 5 ; 16-20

Publication date :

1986-05-01

Size :

2906501 byte

ISSN :

1557-959X , 0885-8985

DOI :

https://doi.org/10.1109/MAES.1986.5005112

Type of media :

Article (Journal)