Krafft Arnold Ehricke
Krafft Arnold Ehricke was a German rocket-propulsion engineer and advocate for space colonization. Ehricke is a co-designer of the first Centaur liquid oxygen/liquid hydrogen upper stage.
Biography
Born in Berlin, Ehricke believed in the feasibility of space travel from a very young age, influenced by his viewing of the 1929 Fritz Lang film Woman in the Moon. At the age of 12, he formed his own rocket society. He attended the Technische Hochschule in Berlin and studied celestial mechanics and nuclear physics under physicists including Hans Geiger and Werner Heisenberg, attaining his degree in Aeronautical Engineering.He worked at Peenemünde as a propulsion engineer from 1942 to 1945 with Walter Thiel, then went to the United States with other German rocket scientists and technicians under "Operation Paperclip" in 1947. He worked for a short time with the Von Braun Rocket Team at Huntsville.
In 1948, while working for the U.S. Army, Ehricke wrote a story about a crewed mission to Mars called "Expedition Ares". It anticipated the many challenges that still face explorers who will make the journey in the future. In the same year he wrote a book with Wernher von Braun, The [Mars Project], which detailed how man could travel to Mars using a ferry system.
Upon leaving government service in 1952, Ehricke worked at Bell Aircraft, and then moved to Convair in 1954. While at Convair, he designed the D-1 Centaur, the world's first upper-stage-booster that used liquid hydrogen and oxygen. He also created an early space station design, based on launch by Convair's Atlas rocket. The NEXUS reusable rocket was a 1960s concept designed by a group at General Dynamics led by Ehricke. Also, during his stay at General Dynamics, he participated in Project Orion (nuclear propulsion).
In 1966, Ehricke was inducted into the International Aerospace Hall of Fame for his engineering achievements and his influential ideas on the purpose of space exploration.
Ehricke undertook a major, multi-decade study of the industrial development of the Moon, which he described as Earth's "seventh continent." His lunar industrialization concept was based on the most advanced technologies, such as nuclear-powered freight transporters, and using fusion energy to power his city, Selenopolis, on the Moon. Ehricke famously stated in 1984, "If God wanted man to become a spacefaring species, He would have given man a Moon."
He married Ingeborg Ehricke.
Ehricke received a space burial on April 21, 1997, when a rocket sent a small amount of his cremated remains into Earth orbit.