More on the UNC Voyager by Nils Dohrmann
>The UNC Voyager carries some 280 kt of payload: A skyhook launch system, a comet mining barge, interplanetary transfer vehicles, beamed microwave atmospheric Shuttles, a De/De fusion array, surface colony supplies, materials processing and general manufacturing equipment.
>Traveling at 5.5% c the Voyager will reach Proxima b in ~77 years. From a highly elliptical parking orbit it will deploy the skyhook into a low orbit to facilitate surface operations. The mining barge will be transferred into the outer system to begin materials collection.
>The direct magnet confinement He3/De fusion drive allows the ship to accelerate to 5.5% c in just over 2 years time. During cruise the three front mounted whipple shields separate and drift ahead. Spaced out by ~ a million km each, they protect the ship from larger grain impacts.
>At nearly 3500 meters long no singular shipyard berth was large enough to support the final assembly of this enormous interstellar spacecraft. Instead multiple Whitmore & Shaw construction barges for the assembly of large space habitats are repurposed for the task.