Orbex successfully completes launch simulation for Prime

Orbex has for the first time successfully simulated the launch of its Prime vehicle, marking a major technical milestone ahead of bringing orbital launch services to the UK next year. 

The end-to-end simulation, saw all mission-critical systems - including flight software, engine control and tracking - successfully tested to replicate performance on launch day. 

Orbex’s avionics, software and GNC (guidance, navigation and control) teams worked together to test the key components responsible for executing every phase of the launch sequence, from countdown to payload deployment. 

Unlike many other launch vehicles, Prime’s avionics and software systems are developed entirely in-house, giving Orbex full control over systems integration, preventing any delays as a result of reliance on third party suppliers and allowing for seamless iterations.  

The test also demonstrated successful control of Prime’s patented coaxial tank system, which is a complex design requiring precise software-hardware integration. The coaxial tank structure is central to the design of Prime and enables a uniquely low mass rocket that is around 30 percent lighter than similarly sized launchers. 

Phil Chambers, CEO of Orbex, said: “This is a huge achievement for Orbex and is a demonstration of our progress towards operational launch services. After successfully building our bespoke components, we’re now in the exciting phase of assembling a fully operational launch system.

“This feat is testament to the incredible teamwork and coordination across our engineering and ground operations teams in the UK and Denmark. This complex, integrated mission simulation shows the strength and depth of our team, and we’re excited to take one step closer to launch.”

Orbex will undertake further simulations to refine the process and prepare for the first test launch – adding further aspects such as pre-launch procedures, countdown, and liftoff. These simulations will help the launch team prepare for various scenarios, troubleshoot potential issues, and ensure they are ready ahead of Orbex Prime’s inaugural launch from SaxaVord Spaceport in 2026.