I designed a crewed interstellar spacecraft

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Report Thread starter 11 months ago
Hi everybody,

I would like to share with you a crewed interstellar spacecraft which I have designed and called Solar One.

It employs a combination of 3 propulsion methods: nuclear fusion, beam-powered propulsion , and photon propulsion.

Basically, several compact fusion reactors power a laser system that propels a huge light sail.

Physicist Robert Forward already proposed in 1983 to use a 26-TW laser system to propel a 100-km light sail, a fresnel lens to focus the beam of the laser, and decelerate the spacecraft with a secondary light sail.

I propose something a bit different, which is to use to use for example a 60 TW-laser to propel a 5-km light sail that would deploy from the spacecraft after the acceleration stage, use parabolic mirrors that gradually change their orientation in order to focus the laser beam, and finally use a photon rocket to decelerate the spacecraft.

In theory, it could be possible to achieve 25% the speed of light, reaching the closest potentially habitable exoplanet in less than 20 years.

There are of course many challenges, like building high-energy continuous-wave lasers, reducing the weight of the nuclear fusion reactors (and of course achieving effective nuclear fusion first), and minimizing the effects of zero gravity during such a long trip.

What do you guys suggest to overcome these challenges?

This is my paper and a short video that summarizes all:

Badges: 6
Report 11 months ago
Really interesting paper btw, I'm defo no expert in this area just love the subject.

Have you ever seen Expanse (Amazon) or read the books? Absolutely amazing series/ books, albeit fiction but the authors have a fantastic understanding of physics. The books also address a lot of these issues and may give you ideas or solutions.

To overcome the zero gravity on a long journey they described having an internal section of the ship rotating to create 1g.- like how a merry go round creates G force when you spin

Do you assume that cold fusion will become a possibility?
How do you decelerate?

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