Pressurization System
AssemblyHigh-pressure helium stored cold and metered down to keep the propellant tanks ullage-pressurised as they drain, holding pump inlet pressure above cavitation through the burn. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Pressurization System
5 top-level lines as of r117558| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | COPV Pressure Vessel | orbital-launch-vehicle-copv | 4× | 4 | · | part |
| 2 | Pressure Regulator | orbital-launch-vehicle-pressure-regulator | 2× | 2 | · | part |
| 3 | Check Valve | orbital-launch-vehicle-check-valve | 6× | 6 | · | part |
| 4 | Helium Line | orbital-launch-vehicle-helium-line | 20× | 20 | · | part |
| 5 | Pressure Sensor | pressure-sensor | 6× | 6 | · | part |