openrocket/openrocket

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

3129 stars · 698 forks observed · 2026-09-24

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

OpenRocket is a free, open-source model rocket simulator written in Java for designing and simulating rockets before building and flying them. It offers six-degree-of-freedom flight simulation, 2D/3D design views, real-time performance feedback, and automatic design optimization.

Use cases

• design a model rocket and simulate its flight trajectory
• predict maximum altitude and velocity of a hobby rocket
• optimize rocket fin and motor parameters for a flight goal
• check rocket stability with center of pressure vs center of gravity
• simulate multi-stage and clustered motor rockets
• export rocket designs to RockSim, RASAero II, or OBJ for 3D printing
• plot and export simulation data to CSV for analysis

When to choose

• you design hobby or competition model rockets and want free simulation software
• you need cross-platform rocketry simulation with staging, clustering, and wind modeling
• you want automatic design optimization and real-time CG/CP feedback
• you need to export designs to other rocketry tools or 3D-printable formats

When to avoid

• you need CFD-grade or supersonic aerodynamic analysis
• you require professional aerospace trajectory tools for orbital or full-scale launch vehicles
• you need a lightweight library to embed simulation in your own app rather than a desktop GUI

Facets

application · maturity active

simulation data-visualization gui simulation graphics education cross-platform jvm windows model-rocketry aerodynamics trajectory-simulation rocket-design flight-simulation java optimization aerospace desktop macos linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="openrocket/openrocket")