Model attitude measurement system
Abstract
An optical system for accurately measuring the attitude of a model being tested inside a transonic wind tunnel is described. The system sensitivity is presented and a quantitative analysis of the Moire effect applied to the system's optical reflector is given. The system is particularly attractive for application to angle variation measurements. Its performance in terms of sensitivity and linearity is good and the reflector assembly, being a passive device, is not too sensitive to the environment.
- Publication:
-
European Transonic Windtunnel GmbH and DFVLR, 2nd Cryogenic Technology Meeting
- Pub Date:
- June 1988
- Bibcode:
- 1988trwt.meet.....R
- Keywords:
-
- Attitude (Inclination);
- Moire Effects;
- Optical Computers;
- Transonic Wind Tunnels;
- Collimation;
- Fresnel Diffraction;
- Optical Measuring Instruments;
- Instrumentation and Photography