University teams
Size a pressure-fed engine and document the design basis for review.
Pressure-fed engine design software
Pressure-fed rocket engine design software.
RPL Engine Workbench focuses on pressure-fed liquid rocket engines: sizing, injector and nozzle workflows, feed-budget context, DXF export, and reports for design review in one local Windows 11 or Apple silicon Mac workflow.
Mac 1.0.0 · signed and notarized. Windows 1.0.0 Public Beta · unsigned. Preliminary design software for analysis, iteration, documentation, and review.
Who it is for
For teams designing pressure-fed engines.
From first-pass sizing to coupled operating-point review, with assumptions kept visible.
Startups
Iterate on chamber pressure, O/F, and feed assumptions with traceable outputs.
Independent engineers
Work locally on the Mac without cloud dependencies.
Workflow
The pressure-fed design loop.
Define the case, solve, inspect warnings, and export artifacts.
Sizing basis
Solve from thrust, mass flow, throat diameter, injector geometry, or tank pressure.
Feed and boundary
Work with coupled feed boundary conditions and pressurization assumptions.
Injector and nozzle
Size injectors and generate bell, conical, and TIC nozzle contours.
Export and report
Export DXF geometry and PDF reports tied to the solved case.
Keep going
Related pages.
Product
Full capability overview.
Flowfield Studio
Visualization and diagnostics.
Methods
Assumptions and boundaries.
Validation
Reference-case coverage.
Docs
Documentation hub.
Pricing
Personal $29/month or $199/year; Business $799/year. Usage rights and plan limits apply.
Download
Windows beta and Mac release with built-in trial.
Sample outputs
See report and DXF previews.
Get started
Design a pressure-fed engine, end to end.
Choose the Windows beta or Mac release and start in built-in trial mode.