“Star Trek: Voyager” featured a slick Starfleet ship with a secondary spacecraft tucked up under the primary hull. It was seen in every episode, but was never seen actually separating from the main ship. Instead, shuttles and other secondary craft were often used, but not the “aeroshuttle.”
Turns out, Foundation Imaging, the company that did the visual effects once the show went from models to digital, not only “built” a CAD model of the aeroshuttle, they also shot some test footage. This included building a cockpit set and using series regular actors.
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Turns out this test footage was prepared just before “Star Trek” Insurrection,” which featured a similar secondary craft leaving from underneath the Enterprise primary hull, and the producers didn’t want to steal the movies thunder there. So the aeroshuttle was just sorta forgotten, replaced by the “Delta Flyer.”