From the patent, it appears that Boeing’s transforming drone makes the metamorphosis just one way: think more like a caterpillar to butterfly, not reconfigurable Optimus Prime. It flies through the air with a pusher propeller and a winged body. Then, when it enters the body of water, it sheds the wings like an insect molting into a new form. New control surfaces, like fins or rudders, can now steer the robot, and in place of the propeller it may use instead a water-specific rotor (though still using the same engine as the aerial propeller). The vehicle may then travel underwater for some time, before returning the surface to transmit information, presumably recorded by sensors added later in the design process, back to the user that launched it.