JSC2006-E-11601 (30 March 2006) --- With the launch of a Soyuz rocket, cosmonaut Pavel V. Vinogradov, Russia's Federal Space Agency Expedition 13 International Space Station commander, and astronaut Jeffrey N. Williams, NASA International Space Station science officer and flight engineer, began their mission Wednesday at 9:30 p.m. EST, (Thursday, March 30, 2006, 8:30 a.m. Kazakhstan time). They launched aboard a Soyuz TMA-8 rocket from the Baikonur Cosmodrome in Kazakhstan. Joining them for several days as a Soyuz crew member before returning home with the Expedition 12 crew is astronaut Marcos Pontes, Brazilian Space Agency. Photo Credit: NASA/Bill Ingalls
Dr. Robert H. Goddard with his complete rocket with the double- acting engine in November 1925, following more than two years of pump development based on the idea of a separate pump for each propellant. Dr. Goddard made an important change in his pump technique by combining both pumps into a single double acting unit. Though gas pressure, rather than pumps, was used on his first successful liquid-propellant rocket shot of March 16, 1926, the idea of combining both pumps into a single unit led to a successful solution of the pump problem and hence marked a significant advance.