The SALTO (reuSable strAtegic space Launcher Technologies & Operations) project will test vertical landing by a reusable launcher stage prototype within the next two years, with a budget of 39 million euros.

SALTO aims in particular to validate the landing phase, which is essential for launcher recovery. This phase is highly complex and entails a real learning curve – by means of situational tests – to speed up European expertise in this technology. The target vehicle, which comprises a number of technologies matured by ArianeGroup and its partners, will pave the way for even more ambitious demonstrations to reproduce the high-energy trajectory representative of an actual operational launch.

The SALTO project includes a full-scale demonstrator, which will carry out a number of low-altitude flights from the Kiruna site in Sweden. These tests are being prepared in synergy with ESA’s Themis reusable stage program for which ArianeGroup is lead contractor, and jointly with the Callisto project sponsored by the French (CNES), German (DLR) and Japanese (JAXA) space agencies. The maturity of the technologies will be achieved through in-flight experimentation, and is inspired by Agile development methods. These projects are preparing key technological building blocks for the next generation of reusable and eco-friendly European launchers.

For SALTO, ArianeGroup will be coordinating a consortium of 26 partners from 12 different countries and consisting of:

• industrial firms: MT Aerospace AG, ArianeGroup GmbH, Safran Data Systems, Safran Electronics & Defense, Avio S.p.A., Sabca, Thales Alenia Space Belgium S.A., GTD Sistemas de Información S.A., GMV Aerospace and Defence SA, Deimos Engineering and Systems S.L.U, Sener TAFS SAU, Swedish Space Corporation, Amorim Cork Composites A,
• research institutes: DLR Institute, CNES, ONERA, IRT Jules Verne, INCAS, and
• start-ups: ETAEM, ID-Services, Shark Robotics SARL, G.L.Electronics s.r.o, SIA WIT Berry, Realtime Technologies Ltd, SpaceForest sp. z o.o.

ENLIGHTEN (European iNitiative for Low cost, Innovative & Green High Thrust Engine) is designed to develop and test advanced production and deployment technologies for reusable rocket engines, following on from the Prometheus program. The project has a budget of 17.4 million euros.

ENLIGHTEN will strengthen the new propulsion system initiatives that ESA has entrusted to ArianeGroup in order to create a family of reusable, high-power engines using bio-methane or green hydrogen. These engines will power Europe’s future family of reusable, eco-friendly launchers.

The goal will notably be to continue with development of key technologies for rocket engines, such as additive manufacturing and artificial intelligence, which are essential for monitoring and maintenance applications for reusable engines.

The ENLIGHTEN consortium, headed by ArianeGroup, comprises 18 partners from eight countries (Austria, Belgium, Estonia, France, Germany, Italy, Netherlands and Portugal) and consists of:

• industrial firms: ArianeGroup GmbH, Avio S.p.A., APP, ADIRA Metal Forming Solutions,
• research institutes and universities: DLR, Fraunhofer, IREPA, KU Leuven, ONERA, Silicon Austria Labs, and
• SMEs and start-ups: Aiko, Areelis, AZO, Edgise, Erneo, Laser Cladding Venture, Proekspert.