The UltraSail blade material, the body of the solar sail, is mounted on multiple reels, each with a width of 5 – 10 m, and deployed to a blade length up to 5 kilometers R. L. Burton, J. K. Laystrom-Woodard, G. F. Benavides, D. L. Carroll, V. L. Coverstone, G. R. Swenson, A. Pukniel, A. Ghosh, and A. D. Moctezuma Initial development of the CubeSail UltraSail spacecraft.