Apr 05, 2026 17:37:00

OpenRocket Simulator: A free simulator useful for building your own rockets.

On April 2, 2026, Japan time, the Orion spacecraft, aiming for a lunar flyby

, was launched . Four astronauts were on board the Orion spacecraft, and many people were undoubtedly excited about this mission to the moon, the first in over 50 years. For those who have been inspired by such space-related news and dreamed of building their own rocket, the software ' OpenRocket Simulator ' may be useful.

OpenRocket Simulator
https://openrocket.info/

OpenRocket Simulator is open-source software that allows you to design and simulate the flight of rockets, and it is compatible with Windows, macOS, and Linux. The design screen looks like this.

You can also design while viewing in 3D.

A large amount of information on real-world parts is registered, allowing you to design by combining these parts. You can also specify material density and exterior surface treatment.

6DoF simulations using more than 50 variables are also possible.

You can also 3D render the rocket you've designed.

OpenRocket Simulator is developed as open source, and you can view the source code and report problems at the following link.

GitHub - openrocket/openrocket: Model-rocketry aerodynamics and trajectory simulation software · GitHub
https://github.com/openrocket/openrocket