Thermal Vacuum Test Chamber

The DHT® Thermal Vacuum Test Chamber is specifically engineered for full lifecycle verification of spacecraft, precisely simulating the extreme environmental conditions of outer space. With a vacuum level reaching ≤5×10⁻⁶ Pa, a broad temperature range from –196°C to +180°C, and adjustable solar radiation intensity between 1120 and 1500 W/m², it enables comprehensive environmental reliability testing in accordance with ECSS-E-ST-10-03C, MIL-STD-1540E, and GJB 1027A-2021 standards.

This system has been successfully deployed in key aerospace applications, including thermal deformation testing of phased-array antennas on low-Earth orbit satellites, thermal management validation of isotope power systems for deep space probes, and integrated thermal-vacuum trials of reusable commercial launch vehicles. It provides critical data for in-orbit failure analysis, accelerated lifespan assessment, and evaluation of spacecraft adaptability to space environments.

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Benefits

Precise Vacuum Simulation: The chamber is capable of simulating the vacuum environment experienced by spacecraft, with an adjustable vacuum range from 13.3 to 13.3×10⁻¹⁰ Pa (10⁻⁴ to 10⁻¹⁴ mmHg), sufficient to meet the thermal-physical simulation requirements for spacecraft.

Efficient Cooling System: Featuring a liquid nitrogen-cooled black radiation screen, the chamber can lower the simulation room temperature to below 100K, effectively simulating the thermal sink effect and replicating the operational state of spacecraft in extremely low-temperature environments.

Wide Vacuum Range: In addition to the standard vacuum of 13.3 Pa, the device can be adjusted to achieve even higher vacuum levels (13.3×10⁻¹ to 13.3×10⁻¹⁰ Pa), supporting studies on material sublimation, aging, and other characteristics, and fulfilling the requirements of more advanced research standards.

High-Precision Thermal Simulation: With a test chamber to spacecraft feature size ratio greater than 2:1, the thermal simulation error is less than 1%. This high-precision simulation can be corrected through theoretical calculations, ensuring the accuracy of the test data.

Compliance with International Standards: The thermal vacuum test chamber complies with the GJB 3758-99 standard, ensuring the equipment’s professionalism and reliability, making it suitable for high-precision testing of spacecraft and their components.

Features Video

Specifications

Temperature Range (°C) 0~180;-40~180;
-65~180;-70~180
Temperature Fluctuation (°C) ≤±1.0 (atmospheric pressure, no load)
Temperature Uniformity (°C) ±2.0 (atmospheric pressure, no load)
Temperature Gradient (°C) ≤2.0
Temperature Rate (°C/min) Heating/Cooling Rate: 0.5 ~ 1.0°C/min
Non-linear Adjustable (atmospheric pressure, no load)
Temperature Deviation (°C) ≤2.0 (atmospheric pressure, no load)
During low pressure composite testing: ±3
Pressure Recovery Rate (kPa/min) ≤10
Pressure Range (kPa) Customizable
Pressure Accuracy (kPa) 0.1
Pressure Variation Rate (kPa/min) ≤10
Available Temperature Range for Humidity Control (°C) 15 ~ 95
Relative Humidity Range (%RH) 20~98
Humidity Accuracy (%RH) ±1.0 ~±3.0