High Enthalpy Shock Tunnel (HIEST)
World’s largest shock tunnel
This is the world’s largest shock tunnel.
It is possible to conduct a test in a simulated re-entry environment using a 50 cm size model.
Moreover, using a model that measures up to around 2 m, it is possible to conduct tests on combined cycle engines and SCRAM jet engines that are fueled by hydrogen gas.
| Department | Space Technology Directorate I |
|---|---|
| Installation location | Kakuda Space Center |
| Test conditions | Test airflow stagnation enthalpy: Maximum of 25 MJ/kg Test airflow stagnation pressure: Maximum of 150 MJ/kg Test airflow duration： more than 2 milliseconds Nozzle exit diameter: 1,200 mm Number of tests: 1.5 times/day |
| Measurements | Data recording system: 250 channels Maximum sampling frequencies: 1 MHz Optical measuring device: Schlieren device |