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You are here: Home / What we do / Technical / Black Hole Engine

Black Hole Engine

 Principal Investigator: Kelvin F. Long

The concept of the Black Hole Interstellar Ramjet (BAIR) is to utilise Hawking evaporation of colliding TeV protons from the interstellar medium, to produce charged particles for thrust generation. This is seen as a potential solution to the interstellar ramjet which proposes mining hydrogen from the interstellar medium, but there are several problems with achieving that. The black hole evaporator engine relies on the assumption of string theory that there are extra dimensions of space, and so the Schwarzschild radius for gravitational collapse will be altered under these conditions.

The project was undertaken as an International Space University MSc thesis topic with the student Andrew Alexander. A comprehensive analysis of the problem has been written up but has not yet bee published in a peer-reviewed journal.

References

K. F. Long, "The Black Hole Evaporator Engine: A Theoretical Propulsion Scheme Using TeV Scale Quantum Gravity", unpublished, 2013.

A.Alexander, "Project BAIR: The Black Hole Augmented Interstellar Rocket", ISU MSc Thesis project 2014/2015.

A.Alexander, K. F. Long, C. Welch, "A Preliminary Analysis of the Black Hole Augmented Interstellar Ramjet", paper under submission, 2017.

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Blog

A Mission to 1I/’Oumuamua

15 October 2026

1I/’Oumuamua is a very special celestial body. As well as being the first interstellar object (ISO) to be discovered encountering our Solar System, way back in 2017, it has various other strange qualities which make it a scientific enigma. Amongst its unusual features we have the following: (1) It is the first ISO to be […]

Halley’s Comet – a Remarkable Serendipity

13 October 2026

Adam Hibberd Conceptually the problem of a rendezvous with Halley’s comet, i.e. the requirement for the vehicle to apply thrust to match its velocity to that of the comet’s, is largely a problem of matching orbital plane. Once this is done, a significant proportion of the work has been performed. Of course the challenge with […]

Halley – Return to Earth

6 October 2026

Adam Hibberd Having solved the problem of catching up with and staying alongside Halley’s comet as it orbits the Sun (go here), the natural follow-up problem is how do we return to Earth, from Halley’s orbit, with a sample on-board? So, I decided to look into the problem of a sample return mission from Halley, […]

Europlanet Symposium

2 October 2026

Mention must be made of Annual Europlanet Science Congress 2026, Symposium, which took place in Netherlands this September. Our Executive Director, Andreas Hein chaired the session on Interstellar Objects (ISOs). T. Marshall Eubanks (Space Initiatives Inc, USA) gave the invited talk at the beginning, highlighting our efforts to coordinate the observation campaign of 3I/ATLAS. See […]

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Starship Blog

A Mission to 1I/’Oumuamua

Halley’s Comet – a Remarkable Serendipity

Halley – Return to Earth

Europlanet Symposium

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