Feature

Boosting satellite life using barrier valves

Propellant supply plays a significant role in a satellite’s operational life. Optimising satellite design for longevity is a critical step before any mission. A high-performing solenoid valve can help conserve charged pressure and extend the life of a satellite, by creating an active barrier between the tank and the rest of the feed system.

29/05/2024 17:03:22

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Satellite systems require high pressure tanks to store propellant and use it as needed. For those using a gas, pressure in the tank decreases with each use. The tank must be reliably sealed throughout the pressure
range when the propellant is not used. The amount of propellant in the tank represents the life of the satellite.

If the tank leaks, the satellite will soon be dead in space. Whether propelled by chemical or
electrical means, satellites must compensate for the expected fluid loss due to leakage, by increasing the volume carried into orbit. Ordinarily, this would require larger or higher-pressure tanks.

As higher pressures require thicker walls, traditional solutions may
add considerable weight to the system, thereby increasing launch costs overall. If launch costs are capped, the mission life must be de-rated to account for any leakage that may occur throughout the life of the satellite. A
better solution is to use a small, reliable solenoid valve with minimal leakage to act as a barrier between the tank and the rest of the system, until flow is desired.

Read the full article in DPA's June 2024 issue

Written By Sophia Bell

Sophia Bell is the Group Editor of DPA, Connectivity, and PBSI. She joined the team in 2020 as Assistant Editor after achieving a First-Class Honours BA in English Literature and Film Studies from the University of East Anglia. In her current role, she leads the editorial strategy, driving digital growth and ensuring each title continues to deliver trusted, relevant insight for engineering and manufacturing professionals.