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Sensors Layout Optimization Design of Rocket Sled Test System
Hongjun Qian1, Wenjie Wang1, Xu Zhao1
1School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China.
Sensors (Basel, Switzerland)
|June 19, 2024
Summary
Rocket sled testing optimizes sensor layout by analyzing aerodynamic and aeroacoustic data. This study details vortex dynamics and acoustic directivity for improved high-speed ground testing.
Area of Science:
- Aerospace Engineering
- Fluid Dynamics
- Acoustics
Background:
- Rocket sleds integrate wind tunnel and flight test features for ground dynamic testing.
- Uniformly distributed sensors face interference from shock waves, ground effects, and aerodynamic noise across wide speed ranges.
Purpose of the Study:
- To optimize sensor layout for rocket sled tests by simulating aerodynamic and aeroacoustic characteristics.
- To analyze the impact of variable acceleration on sensor performance and data integrity.
Main Methods:
- Utilized the AGARD HB-2 standard model as payload for simulations.
- Investigated aerodynamic and aeroacoustic phenomena during variable acceleration periods.
- Analyzed complex wave coupling in high Mach number flow fields.
Main Results:
- Peak wake vortex strength observed at 1.5 seconds, diminishing over time.
- Vortex position shifts forward in subsonic and backward/expands in supersonic stages.
- Pronounced acoustic directivity noted at 75° (subsonic) and 135° (transonic) relative to sliding speed.
Conclusions:
- The study provides crucial data for sensor layout optimization in rocket sled testing.
- Findings support high-precision testing by understanding interference factors and flow dynamics.
- Results contribute to the advancement of ground dynamic testing methodologies.
