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Development of combined hypersonic test facility for aerothermodynamic testing
Sungmo Yang1, Ilsung Choi1, Gisu Park1
1Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea.
Plos One
|February 14, 2024
Summary
A novel combined arc-jet and shock tunnel facility enables aerothermodynamic testing for hypersonic flight simulation. Preheating models revealed changes in surface roughness, paving the way for future force measurements.
Area of Science:
- Aerospace Engineering
- Fluid Dynamics
- Materials Science
Background:
- Hypersonic flight presents extreme aerothermodynamic challenges.
- Simulating flight conditions requires advanced testing facilities.
- Understanding material behavior under high heat flux is crucial.
Purpose of the Study:
- To develop and validate a combined arc-jet and shock tunnel test facility.
- To investigate aerothermodynamic phenomena on different models.
- To assess the impact of preheating on material surfaces.
Main Methods:
- A Huels-type arc-jet tunnel preheated models before shock tunnel experiments.
- Experiments simulated Mach 5 flight at 24 km altitude.
- Cone and hemisphere models (AL6061, STS303) were used to study ablation and surface roughness effects.
Main Results:
- The combined facility achieved high heat flux (1.99±0.03 MW/m2).
- Preheating induced changes in surface roughness were observed.
- Qualitative visualization limited full validation, but initial findings were noted.
Conclusions:
- The integrated hypersonic test facility shows significant potential for aerothermodynamic research.
- Preheating effects on surface characteristics warrant further investigation.
- Future studies will include force measurements with accelerometers.
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