In the typical spacecraft lifecycle, which stage focuses on assembling components, integrating subsystems, and verifying functions prior to launch?

In the typical spacecraft lifecycle, which stage focuses on assembling components, integrating subsystems, and verifying functions prior to launch?

• A. Concept
• B. Detailed Design
• C. Assembly/Integration/Test
• D. Disposal

Answer: (C)

Bringing hardware together and validating it as a complete system occurs in the Assembly/Integration/Test phase. After parts are manufactured, this stage physically assembles the spacecraft, connects components and subsystems, and runs system-level tests to verify everything works together as intended. It includes checking interfaces, power and data paths, and performing end-to-end functional tests, along with environmental testing (vibration, thermal vacuum, EMI) to simulate launch and space conditions. Completing these checks before launch helps catch integration issues early and ensures the system meets its requirements. Earlier stages focus on defining goals and refining designs, while later stages cover operations and disposal. This phase specifically emphasizes assembling, integrating, and validating the spacecraft before flight.

Bringing hardware together and validating it as a complete system occurs in the Assembly/Integration/Test phase. After parts are manufactured, this stage physically assembles the spacecraft, connects components and subsystems, and runs system-level tests to verify everything works together as intended. It includes checking interfaces, power and data paths, and performing end-to-end functional tests, along with environmental testing (vibration, thermal vacuum, EMI) to simulate launch and space conditions. Completing these checks before launch helps catch integration issues early and ensures the system meets its requirements. Earlier stages focus on defining goals and refining designs, while later stages cover operations and disposal. This phase specifically emphasizes assembling, integrating, and validating the spacecraft before flight.