Alignment of wings, tail, flaps and other edges increases radar and visually stealthe. A type of aircraft control surface that combines the functions of both flaps and ailerons. Small hooks were fitted just forward of the inboard flaps. The B-2 also had an oil hydraulic system for closing the cowling flaps. The rear flaps also act as an airbrake. The wing is fitted with leading edge and Fowler flaps. The Mosquito had a low stalling speed of with undercarriage and flaps raised. It can also cause problems with components such as swirl flaps, where fitted. The esophagus is kept inflated by means of flaps beside the tongue. A helmet must have two ear flaps, one on each side. The Shin Meiwa US-1A is a STOL amphibian with blown flaps and all control surfaces. No leading-edge maneuvering flaps are used. The drive-carrying "flaps" are pivoted downwards for vertical launch. A set of Ki-43-like "butterfly" combat flaps was fitted for improved maneuverability. The scar flaps on the back are swollen.