Reusable Booster Engine

Assembly

Detroit Diesel Engine.jpg · Commons ↗ Report photo

A ~845 kN gas-generator kerolox engine built to be lit four times per flight and flown dozens of times: pintle injector, deep-throttle main valve, and a triple-shot hypergolic ignition system.

Direct parts	9
Total parts	54,037
Used in	1 assembly
Class	Assembly
Status	unverified

A ~845 kN gas-generator kerolox engine built to be lit four times per flight and flown dozens of times: pintle injector, deep-throttle main valve, and a triple-shot hypergolic ignition system. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Reusable Booster Engine parts and their functions

9 top-level parts · 54,037 parts in total · full bill of materials below

Reusable Booster Engine parts diagram: 1 turbopump, 2 thrust chamber & nozzle, 3 pintle injector, 4 gas generator, 5 throttle valve, 6 engine valve, 7 multi-start ignition system, 8 engine controller, 9 engine plumbing & hardware. 54,037 parts in 9 assemblies. — Reusable Booster Engine parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Turbopump 6 parts	1×	Shared single-shaft turbopump
2	Thrust Chamber & Nozzle	1×	Regeneratively cooled chamber + bell
3	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.
4	Gas Generator	1×	Small fuel-rich combustor whose ~900 K exhaust drives the turbopump turbine before being dumped overboard.
5	Throttle Valve	1×	Deep-throttle propellant metering
6	Engine Valve	7×	Main, GG and purge valves
7	Multi-Start Ignition System 4 parts	1×	Liftoff, boostback, entry, landing
8	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.
9	Engine Plumbing & Hardware 6 parts	1×	Lines, seals, fasteners

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model — STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour

product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Reusable Booster Engine

9 top-level lines · 35 rows shown · 54,037 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	Pintle Injector 5 parts	reusable-launch-vehicle-pintle-injector	1×	1	31	assembly
3.1	Pintle Post	reusable-launch-vehicle-pintle-post	1×	1	·	part
3.2	Pintle Fuel Sleeve	reusable-launch-vehicle-pintle-sleeve	1×	1	·	part
3.3	Injector Manifold	reusable-launch-vehicle-injector-manifold	1×	1	·	part
3.4	O-Ring Set	oring-set	4×	4	·	part
3.5	Fastener Set	fastener-set	24×	24	·	part
4	Gas Generator	orbital-launch-vehicle-gas-generator	1×	1	·	part
5	Throttle Valve	reusable-launch-vehicle-throttle-valve	1×	1	·	part
6	Engine Valve	orbital-launch-vehicle-engine-valve	7×	7	·	part
7	Multi-Start Ignition System 4 parts	reusable-launch-vehicle-multistart-ignition	1×	1	10	assembly
7.1	TEA-TEB Ampoule	reusable-launch-vehicle-teateb-ampoule	3×	3	·	part
7.2	Ignition Manifold	reusable-launch-vehicle-ignition-manifold	1×	1	·	part
7.3	Propellant Valve	orbital-launch-vehicle-propellant-valve	4×	4	·	part
7.4	Relay	relay	2×	2	·	part
8	Engine Controller 5 parts	orbital-launch-vehicle-engine-controller	1×	1	1,846	assembly
8.1	Bare PCB	pcb-bare	2×	2	·	part
8.2	Microcontroller	mcu	2×	2	·	part
8.3	SMD Passive (R/C/L)	smd-passives	1800×	1,800	·	part
8.4	Connector	connector	30×	30	·	part
8.5	Pressure Sensor	pressure-sensor	12×	12	·	part
9	Engine Plumbing & Hardware 6 parts	orbital-launch-vehicle-engine-plumbing	1×	1	52,085	assembly
9.1	Engine Gimbal Actuator	orbital-launch-vehicle-gimbal-actuator	2×	2	·	part
9.2	Torch Igniter	orbital-launch-vehicle-igniter	2×	2	·	part
9.3	Engine Heat Exchanger	orbital-launch-vehicle-heat-exchanger	1×	1	·	part
9.4	Engine Line	orbital-launch-vehicle-engine-line	80×	80	·	part
9.5	Brazed Joint	orbital-launch-vehicle-brazed-joint	40000×	40,000	·	part
9.6	Tube Fitting	orbital-launch-vehicle-tube-fitting	12000×	12,000	·	part

Where the reusable booster engine is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Space Systems 1 Reusable Launch Vehicle

Used in 1 assembly

Reusable Booster Stage

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 Power weichai.com ↗	Weifang, CN	Diesel & power engines	50 units	12–16 wks
🇮🇳Cummins India cumminsindia.com ↗	Pune, IN	Diesel engines	50 units	12–16 wks
🇨🇳Yuchai yuchai.com ↗	Yulin, CN	Diesel engines	50 units	12–16 wks
🇮🇳Kirloskar Oil Engines koel.co.in ↗	Pune, IN	Diesel & gas engines	50 units	12–16 wks
🇮🇳Ashok Leyland ashokleyland.com ↗	Chennai, IN	Engines & commercial vehicles	50 units	12–16 wks