Head-Up Illusion

The head-up illusion is a vestibular illusion in which a sudden forward linear acceleration during level flight creates a false sensation that the nose of the aircraft is pitching upward. A pilot experiencing the illusion may respond by pushing the controls forward to lower the nose even though no correction is actually needed; the illusion can also arise from a night takeoff from a well-lit airport into a completely dark sky, or from a catapult launch off an aircraft carrier, and it has been implicated in real crashes. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/