The Deep Space Communications and Navigation Systems Center of
Excellence (DESCANSO) was established in 1998 by the National Aeronautics
and Space Administration (NASA) at the California Institute of Technology’s
Jet Propulsion Laboratory (JPL). DESCANSO is chartered to harness and
promote excellence and innovation to meet the communications and navigation
needs of future deep-space exploration.
They were an extraordinary group of talents: Wigner won a Nobel Prize in theoretical physics; Szilard was the first to see that a chain reaction based on neutrons was possible, initiated the Manhattan Project, but left physics to try to restrict nuclear arms; von Neumann could solve difficult problems in his head and developed the modern computer for more complex problems; von Kármán became the first director of NASA's Jet Propulsion Laboratory, providing the scientific basis for the U.S.
If science has the equivalent of a Bloomsbury group, it is the five men born at the turn of the twentieth century in Budapest: Theodore von Karman, Leo Szilard, Eugene Wigner, John von Neumann, and Edward Teller. From Hungary to Germany to the United States, they remained friends and continued to work together and influence each other throughout their lives. As a result, their work was integral to some of the most important scientific and political developments of the twentieth century.
The transfer valve is a three-way hydraulic valve that (1) permits the selection of the main
distributing valve or the auxiliary valve for operating the wicket gates or (2) closes both valves.
The main valve and the auxiliary valve each have plungers that can close off the pressure,
opening, and closing ports of the valves. The bottom of the plungers have a smaller diameter
than the top so that if oil is routed to the top of the plungers they will be forced closed. The
transfer valve routes oil to the top of the plungers of the valve...