Levitation by Heat Radiation in Microgravity

Report presents calculations relating to feasibility of proposed heating-and-levitating technique for use in microgravity. In material-processing system based on this technique, specimen heated to required processing temperature by thermal radiation, and pressures of radiation impinging on specimen from different directions controlled to push specimen toward desired position. Technique used in spaceborne manufacturing processes and experiments requiring levitation in vacuum to prevent contamination of any kind from reaching specimens.