Estimation of spaceplane longitudinal stability and control derivatives from dynamic wind tunnel test
Abstract
Dynamic wind tunnel tests using a 5-percent cable-mounted model of the NAL spaceplane have been conducted in the NAL low-speed large scale wind tunnel. A parameter identification study of the recorded data was undertaken to extract longitudinal stability and control derivatives. The following three estimation methods were adopted: (1) estimate all the derivatives simultaneously; (2) estimate the stability and control derivatives separately; and (3) estimate the dynamic derivatives only while the static derivatives are fixed in results from static wind tunnel tests. The estimated derivatives were evaluated by comparing mathematically simulated time histories based on them with tunnel test data. As a result, all major derivatives were estimated well and the effectiveness of the dynamic test was shown.
- Publication:
-
28th Aircraft Symposium
- Pub Date:
- 1990
- Bibcode:
- 1990aicr.symp..508Y
- Keywords:
-
- Aerospace Planes;
- Dynamic Tests;
- Longitudinal Stability;
- Stability Derivatives;
- Wind Tunnel Tests;
- Aerodynamic Forces;
- Low Speed Wind Tunnels;
- Static Stability;
- Launch Vehicles and Space Vehicles