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Roots of Rocketry_1 - advanced accurate long-range...

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Basics of Space Flight Lecture #1 Roots of Rocketry
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Early Developments 360 B.C. 200 B.C. 900 A.D. 1232 1300 1379 1804 ~1850 1855 1860 Rocket principle found by Archytas (Greek) Chinese invent black powder Chinese invent rocket Fireworks rocket Chinese repell Mongols with rockets at Battle of Kai-Keng “Fire Arrows” Rocket technology spreads through southern Asia and into Europe Italian (Muratori) coins term “rochetta” (= rocket) War rockets increase in size British Congreve Rockets Made 18, 24, 32, 42, 100 or 300 pound versions First spin-stabilized rockets (Hale Rockets) First two-staged rocket (Boxer Rocket) Military looses interest in rockets with development of
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Unformatted text preview: advanced, accurate, long-range artillery. Solid Rocket Fuels China: ~ 200 B.C. • Two components of “black powder” – Oxydize r • Sodium Nitrate (NaO 3 ) = “saltpeter” – Reducer • Sulfur • Carbon = charcoal 2 3 3 2 2 3 2 K N O S C K S N C O + + → + + The Rocket Principle Unburned Fuel Fuel Burning Here Hot Gas from Burning Fuel Molecule of Gas Pressure (force) Ejects Molecule Recoil (force) pushes back on rocket Pressure force drives a molecule out the nozzle (think of a gun), the recoil force drives the rocket forward. Good site for how to construct a bottle rocket: http://www.lnhs.org/hayhurst/rockets/...
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