Booster Engine Assembly
A ~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.
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Bill of materials
7 top-level lines · 21 rows shown · 54,612 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 Hardware Set 1 parts | orbital-launch-vehicle-engine-hardware | 1× | 1 | 52,000 | assembly |
| 7.1 | Engine Small Part | orbital-launch-vehicle-engine-smallpart | 52000× | 52,000 | — | 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 |