English: 88225958 :Piction ID--FIRST FLIGHT -- Experimental high-energy Centaur space vehicle undergoes its "first flight' as it is craned to top of service tower at complex 36-A, Cape Kennedy, Fla., for mating with Atlas launch vehicle, unseen behind protective shrouds. The Atlas-Centaur combination, designated AC-4, is scheduled soon to make the fourth flight test in the Centaur research and development program. First space vehicle powered by liquid hydrogen, Centaur is being developed for National Aeronautics and Space Administration (NASA) by thte Astronautics division at General Dynamics Corp., San Diego, Calif., under the direction of NASA's Lewis Research Center, Cleveland, Ohio.----Please tag these photos so information can be recorded.---Note: This material may be protected by Copyright Law (Title 17 U.S.C.)--Repository: San Diego Air and Space Museum