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The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy

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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.

Keywords:

acoustic directivity rocket sled test system sensor layout shock wave interference

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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.