1.1 This specification covers the design and performance of unmanned aircraft system (UAS) launch system operating via a closed-loop pressurized hydraulic or pneumatic system with a hydraulic recovery, or both. 1.2 In ins This specification covers the design and performance requirements for unmanned aircraft system (UAS) launch systems operating via a closed-loop pressurized hydraulic, or pneumatic system with a hydraulic recovery, or both, which shall include, but not