ETS-VII

The Engineering Test Satellite VII (ETS-VII), also known as Kiku No. 7, was a Japanese satellite developed by the Japan Aerospace Exploration Agency (JAXA). Launched on November 28, 1997, its primary mission objective was to conduct rendezvous docking and space robotics experiments in orbit.

The satellite comprised two main components: a "target" satellite and a "chaser" satellite. The chaser satellite was equipped with robotic arms and sensors designed to approach, grapple, and dock with the target satellite. These experiments aimed to demonstrate the technologies necessary for future on-orbit servicing, assembly, and repair of spacecraft.

Key technologies tested during the ETS-VII mission included:

• Automated Rendezvous and Docking (RVD): Algorithms and systems designed to autonomously guide the chaser satellite towards the target satellite.
• Space Robotics: Robotic arms and end-effectors used for manipulating objects and performing tasks in the space environment.
• On-orbit Experimentation: Assessing the performance of materials, components, and systems in the vacuum and radiation of space.
• Advanced Sensors: Employing sensors for precise navigation, proximity sensing, and target recognition.

The ETS-VII mission contributed significantly to the advancement of space robotics and on-orbit servicing technologies, providing valuable data and experience for future space missions requiring autonomous operations and in-space manipulation capabilities. Though the mission concluded, the knowledge gained from ETS-VII continues to inform the design and development of future spacecraft and robotic systems.