Everett, C.J.; Ulam S.M. On a Method of Propulsion of Projectiles by Means of External Nuclear Explosions. Part I. University of California, Los Alamos Scientific Laboratory, August 1955. See p. 5 [1]Arxivat 2013-06-02 a Wayback Machine.
[enllaç sense format]http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20000096503_2000138021.pdf AlAA 2000-3856 Nuclear Pulse Propulsion - Orion and Beyond G.R. Schmidt, J.A. Bunornetti and P.J. Morton NASA Marshall Space Flight Center Huntsville, Alabama Two or possibly three Saturn V's would have been required to put this vehicle into orbit, and some on-orbit assembly would be required. Several mission profiles were considered -the one developed in greatest detail was for a Mars mission. Eight astronauts. With around 100 tonnes of equipment and supplies. could have made a round trip to Mars in 175 days (most current plans call for one-way times of at least nine months). Another impressive figure is that as much as 45% of the gross vehicle in Earth orbit could have been payload.
Everett, C.J.; Ulam S.M. On a Method of Propulsion of Projectiles by Means of External Nuclear Explosions. Part I. University of California, Los Alamos Scientific Laboratory, August 1955. See p. 5 [1]Arxivat 2013-06-02 a Wayback Machine.