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Stellar Engineering

Page history last edited by PBworks 13 years, 2 months ago

Stellar Engineering

 

Type II Kardashev Civilisation — A civilisation that is able to harness all of the power available from a single star, approximately 1026 W. Again, this figure is variable; the Sun outputs approximately 3.86×1026 W. Kardashev's original definition was 4×1026 W.

 

Class A Stellar Engine

Shkadov Thruster

Stellar Propulsion system, utilising a gigantic statite mirror/solar sail. The resulting radiation pressure differential would propel the whole star, albeit with a minute acceleration. Such a system would easily be stable for millenia.

 

Class B Stellar Engine

It has been calculated that all such stellar engines would emit a large proportion of infra red radiation. One star system known to emit a higher than expected level of IR is the Sirius system. Whether such megascale structures would be plausible in a binary system is unknown.

Dyson Sphere

A megastructure designed to completely enclose a star for the purposes of energy collection of habitation spaces.

Dyson Shell

A Dyson sphere considing of a solid shell, completely encapsulating a star. Considered implausible because of the difficulties involved (including the material stresses exerted on such an object).

Dyson Swarm

A more plausible variant on the Dyson sphere, consisting of a vast array of smaller satellites orbiting a star in a dense formation. One proposed structure is one or more rings encircling the star at a fixed orbital distance.

Matrioshka Brain

A megastructure based on the dyson sphere, capable of immense computational capacity. Such a structure would consist of a number of nested Dyson spheres constructed around a star. Each shell would consist primarily of nanoscale computers, designed to operate at the temperature of each respective sphere, and re-emitting energy at a lower frequency.

 

Star Lifting

The extraction of useful materials from a star. Effectively solar mining.

 

Class C Stellar Engine

Any combination of class A and B stellar engines.

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