Well, if you rotate it and stand it on its nacelles, it does evoke the 1950s-era rocketships like the one in Destination Moon. Perhaps that is what is pinging on your consciousness?
Like it BTW.
Glad you like it.
I hadn't thought about it resembling "atomic" era rocketships. A friend said if you stand it up it also sort of looks like the Starfleet delta. Total coincidence.
I'm definitely drawing inspiration from the Naboo Royal Starship in Star Wars: Episode I, as well as the SR-71 Blackbird, Normandy from Mass Effect, and Prometheus and Dauntless-class starships.
~Belisarius