Introduction:
The low Earth orbit space between 200 and 600 kilometers above the ground is the main operating area for observation satellites, meteorological satellites, space stations and other spacecraft.
The Earth orbit environment is home to atomic oxygen, ultraviolet radiation, particle radiation, high vacuum, plasma, thermal cycling, as well as micrometeoroids and space debris, which pose a serious threat to the service life and stability of spacecraft. The establishment of an orbital space simulation chamber to study the orbital space environment is an indispensable detection method for the physical and mechanical performance of spacecraft.
Functions:
1) Temperature control: Spacecraft operating within 200 to 600 km above the Earth's surface endure extreme environmental conditions. Low temperature environments cause materials to harden and become brittle, lead to differential material contraction, alter the performance of electronic components, and result in water condensation and freezing. In high-temperature environments, inconsistent expansion rates among different materials can cause components to seize up, leading to deformation of materials and seals, as well as discoloration and cracking of organic materials.
2) Ultraviolet radiation: The ultraviolet spectrum of solar radiation can degrade the performance of exposed spacecraft materials, potentially causing the deterioration or even failure of thermal-physical or optical properties of thermal control coatings, making it difficult for spacecraft to meet thermal equilibrium requirements. Under long-term ultraviolet radiation, the mechanical properties of polymer materials change, and even cracking occurs, which poses a fatal threat to the insulation and sealing properties of the materials.
3) Atomic oxygen: In residual gas environments in the form of atomic oxygen, atomic oxygen constitutes the primary component of the residual atmosphere at the orbital altitude. Interactions with spacecraft can cause erosion and aging of structural materials, damaging thermal control coatings and seriously jeopardizing the reliable operation of spacecraft.
4) Particle radiation: Charged particle radiation acts by interacting with the outer electrons of materials, exciting these electrons. When outer electrons are excited to a high energy level, the molecular reactivity is altered, leading to phenomena such as discoloration, decomposition, and fracture in polymeric materials.
Parameters:
1) Chamber Dimensions: Custom-made to non-standard specifications (based on the test specimen)
2) Temperature range: -150°C to 150°C
3) Vacuum range: 10⁻⁵ Pa to 10⁻⁷ Pa
4) Electron radiation: energy range: 200 keV to 2.5 MeV
5) Atomic oxygen: energy 5 eV
6) Ultraviolet radiation: Spectral range: 0.01–0.4 μm, 0–5 times the solar ultraviolet irradiation intensity
7) Solar radiation: Spectral range: 0.18–3.0 μm, solar irradiation intensity: 0–5 times
8) Coupled conditions: Temperature + vacuum; temperature + vacuum + electron radiation; temperature + vacuum + atomic oxygen; temperature + vacuum + atomic oxygen + solar radiation
(All parameters above can be customized to meet specific user requirements.)
