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	Research Unit IV，Research and Development Directorate
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

Department

Research Unit IV，Research and Development Directorate

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