Fittings and adapters
Raptor 4 Engine Assembly
- Bounding box
- 2679.6 × 5628.3 × 2600.0 mm
- Engine
- Precision B-rep
- Parameters
- 39
- Published
- August 13, 2026
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The prompt
Raptor 4 rocket engine. Full-flow staged combustion. 308 tf thrust, 380 bar. Vertical Y-axis. Suspended from spherical gimbal (R=150 mm) at Y+1500. Structural cone Y=0 to +1300, expands from 400 to 800 mm diameter, 18 mm wall, 8 ribs. Turbopumps LOX and CH4 at Y±1200 on 35° platforms. Preburners at Y±600 (Ø120x250 mm). Combustion chamber Y=0 to +276: injector face with 91 coaxial elements in hex pattern, GRCop-84 liner 5 mm, Inconel 718 jacket 40 mm. Nozzle SL Y=0 to -3500, Rao profile, ε=40, throat Ø229.6 mm, exit Ø1452 mm, Inconel 625+ wall 20 to 6 mm. Include gas ducts, actuators at 120°, and N2 purge system. Export as STEP.
Parameters
| Name | Value | Range |
|---|---|---|
| Gimbal bearing radius | 150 mm | 100 – 200 |
| Gimbal center Y height | 1500 mm | 1400 – 1600 |
| Gimbal mount flange OD | 440 mm | 350 – 600 |
| Gimbal mount flange height | 40 mm | 20 – 80 |
| Structural cone lower diameter | 400 mm | 300 – 500 |
| Structural cone upper diameter | 800 mm | 600 – 1000 |
| Structural cone height | 1300 mm | 1000 – 1500 |
| Structural cone wall thickness | 18 mm | 8 – 30 |
| Number of longitudinal ribs | 8 count | 4 – 16 |
| Rib tangential width | 12 mm | 6 – 20 |
| Rib radial height | 35 mm | 15 – 60 |
| Turbopump package diameter | 300 mm | 200 – 400 |
| Turbopump package length | 700 mm | 500 – 900 |
| Turbopump cant angle | 35 deg | 15 – 60 |
| Turbopump center Y height | 1200 mm | 1000 – 1300 |
| Turbopump mounting standoff | 80 mm | 20 – 150 |
| Preburner diameter | 120 mm | 80 – 160 |
| Preburner length | 250 mm | 150 – 350 |
| Preburner center Y height | 600 mm | 400 – 800 |
| Combustion chamber OD | 400 mm | 300 – 500 |
| Combustion chamber height | 276 mm | 200 – 350 |
| Combustion chamber ID | 310 mm | 250 – 350 |
| Injector plate OD | 400 mm | 300 – 500 |
| Injector plate thickness | 30 mm | 15 – 50 |
| Number of coaxial elements | 91 count | 19 – 127 |
| Coaxial element hole diameter | 10 mm | 5 – 20 |
| Hex pattern spacing | 20 mm | 10 – 35 |
| Nozzle throat diameter | 229.6 mm | 150 – 300 |
| Nozzle exit diameter | 1452 mm | 1000 – 2000 |
| Nozzle length | 3500 mm | 2500 – 4500 |
| Nozzle wall thickness at throat | 20 mm | 10 – 30 |
| Nozzle wall thickness at exit | 6 mm | 3 – 12 |
| TVC actuator diameter | 80 mm | 40 – 120 |
| TVC actuator length | 700 mm | 400 – 900 |
| Number of TVC actuators | 3 count | 2 – 6 |
| TVC actuator radial position | 350 mm | 250 – 500 |
| N2 purge tube diameter | 15 mm | 8 – 25 |
| Number of purge tubes | 4 count | 2 – 8 |
| Purge tube radial position | 300 mm | 200 – 450 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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