Vacuum Engine

Assembly

Detroit Diesel Engine.jpg · Commons ↗ Report photo

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.

Direct parts	7
Total parts	74
Used in	1 assembly
Class	Assembly

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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.

Vacuum Engine parts and their functions

7 top-level parts · 74 parts in total · full bill of materials below

Vacuum Engine parts diagram: 1 thrust chamber, 2 nozzle extension, 3 LH2 turbopump, 4 LOX turbopump, 5 turbine bypass valve, 6 spark-torch igniter, 7 TVC actuator. 74 parts in 7 top-level items. — Vacuum 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	Thrust Chamber	1×	Regeneratively cooled chamber
2	Nozzle Extension	1×	Radiative nozzle extension
3	LH2 Turbopump 4 parts	1×	Fuel turbopump
4	LOX Turbopump 4 parts	1×	Oxidizer turbopump
5	Turbine Bypass Valve	1×	Thrust-control bypass valve
6	Spark-Torch Igniter	2×	Spark-torch igniters
7	TVC Actuator 4 parts	2×	Thrust vector actuators

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Build & assembly graph

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Bill of materials for Vacuum Engine

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

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Where the vacuum engine is used

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

Space Systems 1 Rocket Upper Stage

Used in 1 assembly

Rocket Upper Stage

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 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