Rocket Propulsion

In the United States, Robert Goddard, a physics professor at Clark College, was the leading pioneer in rocket propulsion. Goddard started experimenting with liquid fuels in the early 1920s. On March 16, 1926, Goddard launched the first triumphant liquid-propelled rocket. Around the same general period, in many different parts of the world studies on rocket and spaceship propulsion were being conducted . Around 1890, a German law student, Herman Ganswindt, thought of a solid-propellant spaceship that established a marked consciousness of the stability problem. A Russian schoolteacher named Konstantin Ziolkovsky wrote A Rocket into Cosmic Space in 1903 , which pointed at the utilization of liquid propellants for spaceships. German physicist and mathematician, Hermann Oberth, wrote Die Rakete zu den Planetenräumen (The Rocket into Interplanetary Space) in 1923. The German architect Walter Hohmann, who wrote Die Erreichbarkeit der Himmelskörper (The Possibility of Reaching Celestial Bodies) in 1925, which included the first explicit calculation of interplanetary orbits, supplemented Orberth’s book. World War II (1939-1945) granted the motivation and inpetus for the growth of long-range suborbital rockets. Great Britian ,the United States, Germany , and the USSR concurrently manufactured rockets for military purposes. The Germans, who manufactured a luquid-propellant rocket that was utilized in the bombardment of London called the V-2, were most successful . Around the close of World War II, the U.S. Army brought many of the V-2s back to the United Sates , which they then used in experimental research for vertical flights. Some of the most leading rocket experts were now in the United States including Wernher von Braun and Walter Dornberger.