Tank Pressurization System
AssemblyHelium bottles and autogenous bleed lines that hold tank ullage pressure so the turbopumps never cavitate, plus vent valves that relieve boil-off between burns. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Tank Pressurization System
5 top-level lines as of r143768| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Helium COPV | rocket-upper-stage-helium-bottle | 4× | 4 | · | part |
| 2 | Pressurization Regulator | rocket-upper-stage-press-regulator | 2× | 2 | · | part |
| 3 | Vent & Relief Valve | rocket-upper-stage-vent-valve | 2× | 2 | · | part |
| 4 | Autogenous Pressurization Line | rocket-upper-stage-autogenous-line | 2× | 2 | · | part |
| 5 | O-Ring Set | oring-set | 4× | 4 | · | part |