GB/T 32221-2015 Vacuum Technology: Sanwood Technology Large Altitude Test Chambers

In the vast and ambitious field of space exploration, every satellite successfully launched into orbit and every spacecraft exploring the cosmos is the result of countless rigorous tests and meticulous preparations conducted on the ground. Sanwood Technology's Large Altitude Test Chambers is a device designed to simulate space or other extreme environmental conditions. It combines high-temperature and vacuum conditions to evaluate the performance, reliability, and durability of test samples under these conditions, while also meeting the technical requirements of GB/T 32221-2015, thereby contributing to the development of the aerospace industry.

Standard Interpretation 

GB/T 32221-2015 ‘Vacuum Technology - General Technical Requirements for Vacuum Thermal Environment Simulation Test Equipment for Spacecraft’ is a national standard. This standard aims to standardise the design, manufacturing, inspection, and acceptance of thermal vacuum and thermal balance test equipment used for spacecraft (satellites, spacecraft, space probes, etc.). Its core purpose is to ensure that such critical equipment can simulate the vacuum, cold black, and solar radiation environments of space on the ground, thereby verifying the performance, reliability, and lifespan of the spacecraft's thermal control system during in-orbit operation. This standard applies to vacuum thermal environment simulation test equipment operating at pressures between 1×10⁻² Pa and 1×10⁻⁴ Pa. 

Working Principle of the Large Altitude Test Chambers

Sanwood Technology's Large Altitude Test Chambers can achieve a vacuum level of 10⁻³ Pa or higher. The internal annular heat sink simulates a cold black space environment, while the temperature-controlled base plate reduces the temperature stabilisation time of test specimens under high vacuum conditions. The temperature measurement system enables real-time monitoring and data recording during the test process.

Main Technical Specifications of the Large Altitude Test Chambers

The main technical specifications of the thermal vacuum test chamber include temperature control range, vacuum chamber dimensions, ultimate vacuum level, working vacuum level, temperature resolution, temperature fluctuation, power supply voltage, etc. For example, the technical specifications of the following model of Large Altitude Test Chambers:

Solar spectrum absorption coefficient of the inner surface of the heat sink: as ≥ 0.93

Spherical emissivity of the inner surface of the heat sink: ℇH ≥ 0.87

Heat sink temperature range: -70°C to +150°C 

Installation base plate temperature range: -70°C to +150°C 

Average temperature change rate of the heat sink: ≥2°C/min 

Average temperature change rate of the base plate: ≥2°C/min 

Temperature uniformity of the heat sink: ±2°C 

Temperature uniformity of the base plate: ±2°C

Ultimate pressure: ≤5×10⁻⁵ Pa 

Operating pressure: ≤1.3×10⁻³ Pa

Based on the stringent testing requirements for aerospace products, Sanwood Technology provides not just a piece of equipment, but a reliable, precise, and safe ground-based space environment simulation platform. We take GB/T 32221-2015 as our quality foundation and are committed to becoming the most trusted partner in China's aerospace industry and the global high-end equipment sector. In addition to Large Altitude Test Chambers, we have developed AGREE Test Chambers, Altitude Test Chambers,Thermal Shock Test Chambers, and other reliability testing equipment, and we also offer customisation services.

For professional testing solutions, please contact Sanwood Technology, and we will tailor professional services to meet your specific needs.