Europe’s challenge to SpaceX’s reusable space transport systems

Europe’s challenge to SpaceX’s reusable space transport systems

Stephen Kuper

The European Space Agency has sought to challenge private space companies like Elon Musk’s SpaceX to begin development on the Space Rider re-entry vehicle providing a return to Earth and landing capability to complement the existing launch options of the Ariane and Vega families.

Having recently completed system and subsystem preliminary design reviews, Space Rider is advancing quickly towards the critical design review at the end of 2019.

Launched on Vega-C, Space Rider will serve as an uncrewed high-tech space laboratory operating for periods longer than two months in low orbit. It will then re-enter the Earth's atmosphere and land, returning its valuable payload to eager engineers and scientists at the landing site. After minimal refurbishment it will be ready for its next mission with new payloads and a new mission.

Space Rider combines reusability, in-orbit operations and transportation, and precise descent of a re-entry vehicle able to safely traverse and land close to inhabited zones. These are major developments, set to extend European know-how across a host of applications allowing industry to open up new markets.

Up to 800 kilograms of payloads can fit inside the environmentally controlled cargo bay that offers 1,200 litres of payload volume and provides services including 600 watts of power along with thermal, control, data-handling and telemetry capability.

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Offering an array of orbit altitudes and inclinations, Space Rider will enable a large variety of experiments in microgravity, open opportunities for educational missions, and help prove technologies for Earth observation, science, telecommunication and robotic exploration.

Jose Longo, ESA’s Space Rider development program manager, said, "Space Rider is Europe’s first reusable space transportation vehicle. This fascinating challenge is honing our skills in a range of cutting-edge technologies and this will strengthen our position in this competitive market."

 

Non-space-based companies can use Space Rider as a shortcut into the space arena, bypassing the need to become expert space users. The Space Rider system is an adaptation of both Vega-C’s AVUM+ stage, and ESA’s Intermediate eXperimental Vehicle (IXV), which flew a flawless mission in 2015.

The knowledge gained from these developments is being used to ensure a short development schedule and costs per kilogram of payload that are compatible with the evolving global space market.

The upper stage AVUM+ is enhanced with an AVUM Life Extension kit that will be Space Rider's service module providing power, attitude control and de-orbit capability for missions typically lasting two months or more.

Giorgio Tumino, ESA's Vega and Space Rider development program manager, added, "Space Rider provides the European Vega Space Transportation System with the unique opportunity to complement today's capability to access space, with the capabilities to operate and return payloads from space for a variety of in-space applications, in a competitive manner with respect to any alternative solution."

Space Rider builds on IXV, now featuring an added multi-purpose cargo bay, landing gear, and an upgraded design to guarantee reusability for an additional five flights.

To minimise costs, commercial-off-the-shelf components are used whenever possible, and expensive elements will be reused. After each mission, the vehicle will require only minimal refurbishment, making this vehicle competitive in the market.

"These capabilities enable Europe to capture new promising markets as is indicated by the extraordinarily enthusiastic feedback received from potential end users attending our workshops and responding to ESA's announcements of opportunities on Space Rider," Tumino added. 

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