Which type of testing ensures space hardware works under expected environmental conditions?

Which type of testing ensures space hardware works under expected environmental conditions?

• A. Functional testing of software interfaces only.
• B. Load testing under peak mission data rates.
• C. Environmental testing, including thermal-vacuum and vibration tests.
• D. Regression testing to verify new features.

Answer: (C)

Environmental testing is the type of testing that ensures space hardware works under expected environmental conditions. It includes thermal-vacuum tests that simulate the vacuum and extreme temperatures of space, and vibration tests that reproduce launch loads. Thermal-vacuum checks how the thermal control system handles heat and cold, along with material behavior such as outgassing, seals, and lubricants across the mission’s temperature range. Vibration testing verifies the structural integrity of the hardware, mounting, connectors, and fasteners under launch-like accelerations. Other testing types focus on software functionality, performance, or changes and do not address how the hardware will respond to the space environment.