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There were 500 people each involved in two joint ventures set up for the production of the empennage and the cabin.

Another team, Mamba, described their eponymous vehicle as “a hexcopter emphasizing safety, certifiability, and performance. Shrouded rotors and a tilting empennage are incorporated.”

I'm shaking already, like a hula-hula dancer's empennage.

His idea embodied 'everything'—the wings forming an oblique sail, the empennage, the spindle forms to diminish resistance, the screw-propeller, the 'explosion' motor,... he even described a means of securing automatic stability.