Booster Engine
AssemblyA ~850 kN gas-generator-cycle kerolox engine; counting every brazed joint, seal, clip and bolt, one large liquid rocket engine runs to roughly 50,000 parts (the RS-25 is documented above that figure). A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Booster Engine parts and their functions
7 top-level parts · 54,697 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 | Injector 2 parts | 1× | Flat-face injector that meters and atomises both propellants into the chamber through hundreds of discrete elements. |
| 4 | Gas Generator | 1× | Small fuel-rich combustor whose ~900 K exhaust drives the turbopump turbine before being dumped overboard. |
| 5 | Engine Valve | 8× | Main, GG and purge valves |
| 6 | 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. |
| 7 | Engine Plumbing & Hardware 6 parts | 1× | Lines, actuators, igniters, joints |
3D model
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Build & assembly graph
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Bill of materials for Booster Engine
7 top-level lines · 26 rows shown · 54,697 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 | Injector 2 parts | orbital-launch-vehicle-injector | 1× | 1 | 701 | assembly |
| 3.1 | Injector Body | orbital-launch-vehicle-injector-body | 1× | 1 | · | part |
| 3.2 | Injector Element | orbital-launch-vehicle-injector-element | 700× | 700 | · | part |
| 4 | Gas Generator | orbital-launch-vehicle-gas-generator | 1× | 1 | · | part |
| 5 | Engine Valve | orbital-launch-vehicle-engine-valve | 8× | 8 | · | part |
| 6 | Engine Controller 5 parts | orbital-launch-vehicle-engine-controller | 1× | 1 | 1,846 | assembly |
| 6.1 | Bare PCB | pcb-bare | 2× | 2 | · | part |
| 6.2 | Microcontroller | mcu | 2× | 2 | · | part |
| 6.3 | SMD Passive (R/C/L) | smd-passives | 1800× | 1,800 | · | part |
| 6.4 | Connector | connector | 30× | 30 | · | part |
| 6.5 | Pressure Sensor | pressure-sensor | 12× | 12 | · | part |
| 7 | Engine Plumbing & Hardware 6 parts | orbital-launch-vehicle-engine-plumbing | 1× | 1 | 52,085 | assembly |
| 7.1 | Engine Gimbal Actuator | orbital-launch-vehicle-gimbal-actuator | 2× | 2 | · | part |
| 7.2 | Torch Igniter | orbital-launch-vehicle-igniter | 2× | 2 | · | part |
| 7.3 | Engine Heat Exchanger | orbital-launch-vehicle-heat-exchanger | 1× | 1 | · | part |
| 7.4 | Engine Line | orbital-launch-vehicle-engine-line | 80× | 80 | · | part |
| 7.5 | Brazed Joint | orbital-launch-vehicle-brazed-joint | 40000× | 40,000 | · | part |
| 7.6 | Tube Fitting | orbital-launch-vehicle-tube-fitting | 12000× | 12,000 | · | part |
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Where the booster engine is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → 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 |