Product
RPL Engine Workbench connects performance calculations, thermochemistry data, injector sizing, nozzle geometry, DXF export, reports, and Flowfield Studio in one native Apple silicon desktop workflow.
Design Loop
The app is organized around the way propulsion design work moves: define the case, solve the engine, inspect warnings, adjust geometry, export artifacts, and document the assumptions.
Work from target vacuum thrust, total mass flow, throat diameter, injector geometry, or tank pressure. Results flow through the engine summary, feed budget, injector outputs, nozzle geometry, thermal screening, and report export.
Compute characteristic velocity, chamber temperature, vacuum and ambient Isp, mass flow, expansion behavior, separation screening flags, and solve notes that keep review context visible.
Embedded CEA-referenced tables are the default path. Optional local RocketCEA integration can be used where installed; fallbacks and estimates are labeled in the result stream.
Size unlike doublets, triplets, and showerhead concepts with per-stream orifice sizing, pressure drop, momentum ratio, packing, ligament checks, and O/F consistency warnings.
Generate bell, conical, and TIC nozzle contours with solved throat, exit, length, area ratio, and geometry views for iteration and review.
Export nozzle contour geometry as DXF entities for CAD handoff, machining reference, or downstream review without rebuilding the profile manually.
Deliverables
Every solved case can produce shareable engineering artifacts. Reports communicate assumptions and warnings; exported geometry shortens the path to CAD and machining discussions.
Engine sizing, injector and feed-system tools, nozzle geometry, DXF export, and PDF/CSV/JSON reports are included in every paid plan. Flowfield Studio (steady preview and transient playback) and VTK export are Pro plans only; Business Pro runs Flowfield at the highest resolution. Academic licenses are for non-commercial, educational use only; Business licenses permit commercial use. See pricing for the full comparison.
Native Workflow
The current public platform is native Apple silicon Mac. Core workflows run locally with no cloud requirement and no browser-based engineering state.
Built as a native C++/Qt desktop app for Apple silicon Macs, with local files and local computation.
Flowfield Studio can use GPU/Metal acceleration where supported by the installed build and current solver path.
Core work does not require a cloud service. Optional external tools, such as RocketCEA, remain local integrations when configured by the user.
Positioning
RPL Engine Workbench supports design iteration, validation planning, and engineering review. Results should be reviewed by qualified engineers and validated against test data before hardware decisions.
