Orbex reveals world’s largest 3D-printed rocket engine
UK start-up Orbex has publicly unveiled its Prime rocket for the first time at the opening of its new headquarters and rocket design facility in Forres in the Scottish Highlands.
The completed engineering prototype of the Stage 2 rocket (the stage that will transit into orbital flight after launch) is made from a specially formulated lightweight carbon fibre and aluminium composite, and includes the world’s largest 3D-printed rocket engine.
Thanks to its novel architecture, Orbex says Prime launchers are up to 30% lighter and 20% more efficient than any other vehicle in the small launcher category, packing more power per cubic litre than many heavy launchers.
Printed in one
The 3D-printed rocket engine was uniquely manufactured in a single piece without joins in partnership with additive manufacturer SLM Solutions. Given the extreme temperature and pressure fluctuations involved in space flight, this gives the engine an advantage over other rocket engines, which can suffer from weaknesses associated with joining and welding.
It is also the first commercial rocket engine designed to work with bio-propane, a clean-burning, renewable fuel source that cuts carbon emissions by 90% compared to fossil hydrocarbon fuels, supplied by Orbex’s new exclusive BioLPG fuel partner Calor.
Orbex first came into the public eye in July of 2018, when the UK Space Agency announced that Orbex had been chosen to launch from the proposed spaceport in Sutherland in the Scottish Highlands, as part of the main consortium. At that time, the company had already won £30 million ($40 million) in private and public backing for the project, making it Europe's best-funded private launch company, straight out of stealth mode.
Maiden flight: 2021
On Orbex Prime's maiden flight from Scotland in 2021, the rocket will carry an experimental payload from UK-based Surrey Satellite Technology Ltd. (SSTL), a manufacturer of small satellites.
Orbex also announced that Swiss-based Astrocast SA has selected Orbex to launch multiple nanosatellites for the development of a planet-wide Internet of Things (IoT) network. Astrocast’s satellite-based IoT network will eventually include 64 nanosatellites, spread across eight strata above the Earth to deliver IoT connectivity across the planet, including regions currently considered remote or inaccessible.
Elecnor Deimos has also confirmed that it has contracted with Orbex for up to 20 satellite launches.
The new Headquarters building at Forres is a 2,000-square-metre facility. It will combine a rocket design and integration facility, an operations centre as well as executive offices. It is expected that the facility will help bring over 130 jobs to the Scottish Highlands region. An “intense” recruitment drive is already underway, the company says.
One step closer for Britain
Chris Larmour, Orbex CEO, said: “Since the announcement in July 2018 that we had been chosen to launch from the Sutherland spaceport, Orbex has been on an incredible journey, largely behind-the-scenes. That is changing today, as we publicly reveal the company’s technical and commercial momentum. Not only do we have a full engineering prototype of the complete Stage 2 of the Prime rocket, but also a growing roster of customers hoping to be among the first to launch satellites from Scotland.”
Larmour continued: “Today Orbex has taken some big strides forward, creating something unique in Europe – a well-funded, private micro-launch solution supported by excellent facilities, strong industrial partners and an expanding line-up of commercial customers. There are only a handful of private launcher companies globally that have practical experience in the design and production of micro-launch vehicles, and even fewer that have combined those skills with sufficient funding and the commercial contracts to execute on their plans. We are looking forward to the next steps in our development from our new home in Scotland.”
Graham Turnock, Chief Executive, UK Space Agency said: “Orbex’s new rocket design facility brings Britain one step closer to having its own domestic commercial launch capability and firmly positions the UK as Europe’s frontrunner for those looking to Earth’s orbit and beyond for new opportunities. The new facility and future spaceport operations will help unlock vast economic and societal benefits not just in Scotland but right across the UK.”