Software / REDTOP


Software for Rocket Engine Design

Explore the system trade space and improve design decisions

A propulsion test stand on your desktop

Streamlined workflow

Cycle options

Rapid and robust execution

Power up your engine design

Flexible modeling and analysis

  • Multiple propellant configurations (monopropellant, bipropellant, cold gas thruster) expand modeling to virtually any liquid rocket engine
  • Power balance solution ensures consistency in turbomachinery sizing
  • Editable chemical species database allows customization to match user needs
  • 3D geometry outputs make nozzle and combustion chamber sizing tangible and transferable
  • Flexible units of measurement (English or SI) offer convenient integration and reporting
  • Syntax highlighting for Notepad++, VScode, and Gedit makes file editing easy

License Information

REDTOP™ software is sold under an annual renewable license. The initial purchase of the software entitles the customer to one (1) year of REDTOP use, along with access to any updates released during that calendar year. A software maintenance fee is due annually thereafter on the anniversary of the initial purchase in order to continue using the product.

Please contact SpaceWorks directly for further information. For sales information, contact

View Full License Agreement

ITAR Notice

ITAR stands for International Traffic in Arms Regulation. It is a U.S. law intended to reduce the proliferation of weapons and weapons technology. Our software is subject to ITAR and as a result cannot be distributed to foreign nationals without an export license.

For more information, please visit the Directorate of Defense Trade Controls website.

System Requirements

  • Windows 7, 8, 10, 11
  • Mac OS X
  • Linux

Additional Notes