Vacuum Engine Assembly
Expander-cycle LOX/LH2 engine producing 110 kN at 465 s specific impulse; hydrogen warmed in the chamber jacket drives the turbopumps, allowing gentle, restartable starts. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
7 top-level lines · 23 rows shown · 74 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Thrust Chamber | rocket-upper-stage-thrust-chamber | 1× | 1 | — | part |
| 2 | Nozzle Extension | rocket-upper-stage-nozzle-ext | 1× | 1 | — | part |
| 3 | LH2 Turbopump 4 parts | rocket-upper-stage-lh2-turbopump | 1× | 1 | 7 | assembly |
| 3.1 | Pump Impeller | rocket-upper-stage-impeller | 2× | 2 | — | part |
| 3.2 | Turbine Wheel | rocket-upper-stage-turbine-wheel | 1× | 1 | — | part |
| 3.3 | Ball Bearing | ball-bearing | 2× | 2 | — | part |
| 3.4 | Turbopump Shaft Seal | rocket-upper-stage-shaft-seal | 2× | 2 | — | part |
| 4 | LOX Turbopump 4 parts | rocket-upper-stage-lox-turbopump | 1× | 1 | 6 | assembly |
| 4.1 | Pump Impeller | rocket-upper-stage-impeller | 1× | 1 | — | part |
| 4.2 | Helical Gear Pair | gear-pair | 1× | 1 | — | part |
| 4.3 | Ball Bearing | ball-bearing | 2× | 2 | — | part |
| 4.4 | Turbopump Shaft Seal | rocket-upper-stage-shaft-seal | 2× | 2 | — | part |
| 5 | Turbine Bypass Valve | rocket-upper-stage-bypass-valve | 1× | 1 | — | part |
| 6 | Spark-Torch Igniter | rocket-upper-stage-igniter | 2× | 2 | — | part |
| 7 | TVC Actuator 4 parts | rocket-upper-stage-tvc-actuator | 2× | 2 | 28 | assembly |
| 7.1 | Servo Motor 4 parts | servo-motor | 1× | 2 | 24 | assembly |
| 7.1.1 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 2 | 3 | assembly |
| 7.1.2 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 2 | 19 | assembly |
| 7.1.3 | Encoder | encoder | 1× | 2 | — | part |
| 7.1.4 | Motor Housing | motor-housing | 1× | 2 | — | part |
| 7.2 | Ball Screw | ball-screw | 1× | 2 | — | part |
| 7.3 | Encoder | encoder | 1× | 2 | — | part |
| 7.4 | Connector | connector | 2× | 4 | — | part |
Used in 1 assembly
Sourcing — likely vendors
Companies that make this · indicative price $500–$50k · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| weichai.com ↗ | Weifang, CN | Diesel & power engines | 50 units | 12–16 wks |
| cumminsindia.com ↗ | Pune, IN | Diesel engines | 50 units | 12–16 wks |
| 🇨🇳Yuchai yuchai.com ↗ | Yulin, CN | Diesel engines | 50 units | 12–16 wks |
| koel.co.in ↗ | Pune, IN | Diesel & gas engines | 50 units | 12–16 wks |
| ashokleyland.com ↗ | Chennai, IN | Engines & commercial vehicles | 50 units | 12–16 wks |