Authors: Kenneth C. Johnson
A solar-sail spacecraft propulsion concept uses a large Fresnel lens to concentrate radiation onto one or two small beam-steering mirrors. The lens itself does not effect significant momentum transfer from the photon flux; it only functions as a condenser, which allows the use of much smaller mirrors as momentum-transfer elements.
Comments: 2 Pages.
[v1] 2017-10-31 03:04:07
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