A critical part of a satellite is its structural subsystem, which is designed to survive launch loads and protect the operation of other subsystems. Structures are often classified into primary and secondary components, the latter includes struts and brackets that are used in different configurations as needed. Several satellite elements in static or relative movement are linked together by structural bracket connectors that are fixed securely to the satellite body. Similar to many “flying vehicles,” satellites are designed with materials as light and compact as possible, especially in small and nanosatellites.
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Launch Vehicle Fuel / Oxidizer Poppet Valve
Category
Leakage Requirement
3 min
Description
In order to handle all the fluids used on a launch vehicle such as in the propulsion system, many different type of valves are installed that also require radial and dynamic seals. Some are poppet valves, which are unique due to the reciprocating movement of the shaft leaving the seal unsupported.
As a flow control device, the valve allows the flow of pressurized fluid (liquid or gas) in one direction only. In normal operations, they are in shut-off position where sealing is secured by static seals that are designed to withstand any blowout.
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