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SpaceLiner: the 2025 pre-definition status report

Martin Sippel, Steffen Callsen, Sunayna Singh, Jascha Wilken, Leonid Bussler, Silvia Rodriguez-Donaire, Daniel García-Almiñana
May 5, 2026
Published Date

Research Abstract & Technology Focus

Abstract Work on the SpaceLiner ultra-high-speed rocket-propelled passenger transport is now the focus of Phase A conceptual design evolution, mainly addressing system aspects of the next configuration release 8. The second role of the SpaceLiner concept as a TSTO launch vehicle for space transport is retained, and in this context, suitable precursor steps are investigated. The SpaceLiner cabin integration is an important aspect to be addressed as well as the feasibility of performing multiple missions compliant with noise and sonic boom constraints. The passenger capsule’s shape has been iterated by multidisciplinary design analyses aiming for aerodynamic stability in a wide range of flight conditions. The thermal protection system of both stages is adapted and is evaluated for the passenger stage for multiple missions. A worldwide network of point-to-point missions with minimized impact of sonic boom on the overflown population is assessed. The challenges of finding a passenger rescue capsule with improved aerodynamic stability in the full flight regime are summarized. Finally, the development roadmap is linked to key elements of potential future European reusable heavy-lift launchers as precursors to the SpaceLiner and an update of estimated costs is presented.
Engineering Boom Aerospace engineering Aeronautics Aerodynamics Launch vehicle
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Correlated Market Trend: Aerospace Engineering

Bridging academia to market: The 60-day public search velocity mapping directly to the core technology of this paper. Dashed line represents 7-day moving average.

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Frequently Asked Questions (FAQ)

Curated market intelligence mapped to this research.

What is the core focus of the research titled 'SpaceLiner: the 2025 pre-definition status report'?

This literature focuses on: Abstract Work on the SpaceLiner ultra-high-speed rocket-propelled passenger transport is now the focus of Phase A conceptual design evolution, mainly addressing system aspects of the next configuration release 8. The second role of the SpaceLiner ...

Are there open-source GitHub repositories related to SpaceLiner: the 2025 pre-definition status report?

Yes, open-source projects like gsd-build/gsd-2 (A powerful meta-prompting, context engineering and spec-driven development system that enables agents to work for long periods of time autonomously...) are actively building upon these concepts.

Which startups are commercializing the technology behind SpaceLiner: the 2025 pre-definition status report?

Products like TicTicBoom are bringing this to market. Their focus is: The app that catches your tics and freezes your screen.

Are there commercial applications of 'SpaceLiner: the 2025 pre-definition status report' in market news publications?

Yes, highly correlated activity was mapped. An entry titled '5 Companies Competing to Replace the International Space Station' discusses this: Each of these aerospace firms has a unique vision for the future of humanity's presence in low-Earth orbit.

What other academic literature is closely related to 'SpaceLiner: the 2025 pre-definition status report'?

Yes, highly correlated activity was mapped. An entry titled 'The second data release from the European Pulsar Timing Array' discusses this: The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA) collaborations have measured a low-frequency common signal in the co...

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Commercial Realization

Startups and Open Source tools heavily associated with the concepts explored in this paper.

  • GitHub
    gsd-build/gsd-2
    A powerful meta-prompting, context engineering and spec-driven deve...
  • GitHub
    kevinrgu/autoagent
    autonomous harness engineering
  • Product Hunt
    TicTicBoom
    The app that catches your tics and freezes your screen
  • Product Hunt
    Ovren
    Your AI engineering department that ships your backlog

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