Vacuum Engine
AssemblyVacuum variant of the booster engine: same pintle powerhead exhausting through a large radiatively cooled nozzle extension for ~348 s of specific impulse. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Vacuum Engine parts and their functions
8 top-level parts · 54,035 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Turbopump 6 parts | 1× | Single-shaft turbopump spinning at ~36,000 rpm; one turbine drives back-to-back LOX and RP-1 centrifugal pump stages. |
| 2 | Thrust Chamber & Nozzle | 1× | Regeneratively cooled combustion chamber and bell nozzle; RP-1 flows through milled coolant channels in the liner before injection. |
| 3 | Nozzle Extension | 1× | Niobium or carbon-composite radiatively cooled skirt expanding the nozzle to a ~165:1 area ratio for vacuum operation. |
| 4 | Pintle Injector 5 parts | 1× | Single central pintle element in place of hundreds of coaxial ones: LOX flows down the centre post and sheets radially into an annular fuel curtain, inherently stable and throttleable, which is why a landing engine wants one. |
| 5 | Engine Valve | 6× | Pneumatically or hydraulically actuated propellant valve sequencing engine start, mainstage and shutdown. |
| 6 | Multi-Start Ignition System 4 parts | 1× | Restart for multi-burn missions |
| 7 | Engine Controller 5 parts | 1× | Dual-channel engine control unit that closes the loop on chamber pressure and mixture ratio and executes start/shutdown sequences. |
| 8 | Engine Plumbing & Hardware 6 parts | 1× | The propellant, purge and pneumatic lines, gimbal actuators, igniter and the brazed joints, B-nuts, seals, clips and bolts that take one engine to its ~50,000-part total. |
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Bill of materials for Vacuum Engine
8 top-level lines · 34 rows shown · 54,035 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Turbopump 6 parts | orbital-launch-vehicle-turbopump | 1× | 1 | 55 | assembly |
| 1.1 | Pump Impeller | orbital-launch-vehicle-pump-impeller | 2× | 2 | · | part |
| 1.2 | Pump Inducer | orbital-launch-vehicle-pump-inducer | 2× | 2 | · | part |
| 1.3 | Turbine Wheel | orbital-launch-vehicle-turbine-wheel | 1× | 1 | · | part |
| 1.4 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 1.5 | O-Ring Set | oring-set | 6× | 6 | · | part |
| 1.6 | Fastener Set | fastener-set | 40× | 40 | · | part |
| 2 | Thrust Chamber & Nozzle | orbital-launch-vehicle-thrust-chamber | 1× | 1 | · | part |
| 3 | Nozzle Extension | orbital-launch-vehicle-nozzle-extension | 1× | 1 | · | part |
| 4 | Pintle Injector 5 parts | reusable-launch-vehicle-pintle-injector | 1× | 1 | 31 | assembly |
| 4.1 | Pintle Post | reusable-launch-vehicle-pintle-post | 1× | 1 | · | part |
| 4.2 | Pintle Fuel Sleeve | reusable-launch-vehicle-pintle-sleeve | 1× | 1 | · | part |
| 4.3 | Injector Manifold | reusable-launch-vehicle-injector-manifold | 1× | 1 | · | part |
| 4.4 | O-Ring Set | oring-set | 4× | 4 | · | part |
| 4.5 | Fastener Set | fastener-set | 24× | 24 | · | part |
| 5 | Engine Valve | orbital-launch-vehicle-engine-valve | 6× | 6 | · | part |
| 6 | Multi-Start Ignition System 4 parts | reusable-launch-vehicle-multistart-ignition | 1× | 1 | 10 | assembly |
| 6.1 | TEA-TEB Ampoule | reusable-launch-vehicle-teateb-ampoule | 3× | 3 | · | part |
| 6.2 | Ignition Manifold | reusable-launch-vehicle-ignition-manifold | 1× | 1 | · | part |
| 6.3 | Propellant Valve | orbital-launch-vehicle-propellant-valve | 4× | 4 | · | part |
| 6.4 | Relay | relay | 2× | 2 | · | part |
| 7 | Engine Controller 5 parts | orbital-launch-vehicle-engine-controller | 1× | 1 | 1,846 | assembly |
| 7.1 | Bare PCB | pcb-bare | 2× | 2 | · | part |
| 7.2 | Microcontroller | mcu | 2× | 2 | · | part |
| 7.3 | SMD Passive (R/C/L) | smd-passives | 1800× | 1,800 | · | part |
| 7.4 | Connector | connector | 30× | 30 | · | part |
| 7.5 | Pressure Sensor | pressure-sensor | 12× | 12 | · | part |
| 8 | Engine Plumbing & Hardware 6 parts | orbital-launch-vehicle-engine-plumbing | 1× | 1 | 52,085 | assembly |
| 8.1 | Engine Gimbal Actuator | orbital-launch-vehicle-gimbal-actuator | 2× | 2 | · | part |
| 8.2 | Torch Igniter | orbital-launch-vehicle-igniter | 2× | 2 | · | part |
| 8.3 | Engine Heat Exchanger | orbital-launch-vehicle-heat-exchanger | 1× | 1 | · | part |
| 8.4 | Engine Line | orbital-launch-vehicle-engine-line | 80× | 80 | · | part |
| 8.5 | Brazed Joint | orbital-launch-vehicle-brazed-joint | 40000× | 40,000 | · | part |
| 8.6 | Tube Fitting | orbital-launch-vehicle-tube-fitting | 12000× | 12,000 | · | part |
Where the vacuum engine is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $500–$50k. How estimates work| 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 |