"Are these names for prototypes of each or more like Saturn V or Jupiter? Remember, the Apollo spacecraft module designs were simply known as command, service, and landers. Names like Gumdrop were not applied except to actual vehicles -- and only those occupied by crew."<br /><br />These would appear to be "class" names like "Saturn V" or "Jupiter". I seem to recall that while the Apollo spacecraft (command module, service propulsion module and lunar module) were attached their radio call-signs were simply "Apollo 11", etc. Only when the CM/CSM and the LM separated was there a requirement to differentiate between the call-signs of each vehicle, e.g., "Kitty Hawk" for the CM/CSM, and "Antares" for the LM on Apollo 14.<br /><br />Some of this will depend on NASA policy. In the Gemini Program, for example, after Gus Grissom named his spacecraft, "Molly Brown", NASA put a stop to naming of the spacecraft. But went back to naming the vehicles, as I said, because of the need to differentiate between vehicles for comm purposes.<br /><br />I would guess...and that's all it is...that, if Griffin or someone of similar mind is head of NASA, they will allow the crews to name their own spacecraft.<br /><br />Incidentally, I seem to recall...vaguely...that there were several proposed heavy-lift boosters that went under the Ares name! Can't find the reference just now. One of these days I've GOT to get my library organized!<br /><br />Ad Luna! Ad Ares! Ad Astra!