Set Reminder2025-04-18 12:00:002025-04-18 12:00:00America/New_YorkBidsquareBidsquare : Celestial & Terrestrial Exploration https://www.bidsquare.com/auctions/potter-potter/celestial-terrestrial-exploration-21885 This auction will feature fine books and documents regarding human exploration of the land, sea, and sky.
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[SPACE FLIGHT PIONEER]. TSIOLKOVSKY, Konstantin (1857-1935). 2 Original Sketches of a Rocket Engine with His Signed Captions. [Russia, n.d., ca. 1920s-30s]. 1 oblong 8vo page on one thin sheet, recto only. Approximately 6 ? x 9 ?". Sheet is toned, soiled, edgeworn with marginal chipping, 1 horizontal crease with a tear along the upper portion of crease, some faint creasing. Very good. This is a complex pair of sketches of what is most likely a rocket engine, with signed caption. The first sketch depicts a cutaway of the mechanism, the other demonstrates how a combination of 2 engines would produce thrust. With COA of the International Charitable Foundation for Support of Russian Cosmonauts (COA is in Russian - an English translation is included).