The Development of Titanium and Inconel Cryogenic Pressure Vessels
This paper summarizes the development of lightweight pressure vessels for the Apollo cryogenic storage system. The vessels store supercritical hydrogen and oxygen and are contained in a load-bearing thermal protection system which provides the necessary fluid storage life and uniform vessel loading. The Ti-5Al-2,5Sn ELI alloy was selected for the hydrogen vessel and Inconel 718 was chosen for the oxygen vessel. Design considerations included limiting joints to one single girth weld and providing generous tapered sections at all discontinuities. The forge-machine method of fabrication and the electron beam technique of welding were selected over other methods.
KeywordsTitanium Alloy Pressure Vessel Electron Beam Welding Scatter Band Burst Test
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