Patent ID: 6449942
Filing Date: 2002-09-17
Classification: F16L

Abstract:
A fluid system, comprising:a fluid duct assembly which comprises first and second duct sections, first and second gimbal joints interconnected with said first and second duct sections, respectively, and a first slip joint which slidably interconnects said first and second duct sections and which is both dynamic, redundantly sealed, wherein said first slip joint is disposed between said first and second gimbal joints, wherein said first duct section comprises first, second, third, and fourth annular grooves that are longitudinally spaced, wherein said first slip joint comprises a first annular seal disposed in said first annular groove, a second annular seal disposed in said second annular groove, a first bushing disposed in said third annular groove and being a different structure than said first duct section, and a second bushing disposed in said fourth annular groove and being a different structure than said first duct section, wherein said first and second annular grooves are located at some longitudinal location that is between said third and fourth annular grooves; a rocket fuel tank which is interconnected with one of said first duct section and said second duct section; and a rocket engine which is interconnected with the other of said first duct section and said second duct section.