摘要:
An aircraft with at least two levels situated one above the other, including: a platform that can be moved between a first position and a second position, the first of these positions, as a lower position, being situated at a first level of the aircraft and the second position, as a higher position, being situated at a second level higher than that of the first level; an assembly of traction cables connected on the platform and a mechanism operating the cables for raising and lowering the platform; and an assembly of walls surrounding at least partially the platform and along which the platform moves.
摘要:
The tires that equip airplane wheels have elastomer treads from which a piece may detach and damage a zone of the airplane. Shredding means, situated between wheel and another part of the airplane, shred the piece of tread, which detaches from the tire and is projected onto the other part of the airplane, into several small pieces. These shredding means, such as a grid with blades that can cut the tread material, are arranged so as to disperse the pieces. A process reinforces the tolerance of an airplane to impacts of a detached piece of the tread, by shredding the piece into several small pieces between the instant when the piece is detached and the instant when the piece would have struck airplane.
摘要:
The casing comprises a wall defining an internal housing open on the bottom in order to allow the retraction of a corresponding front landing gear into the interior of the housing. The said wall separates the said non-pressurized internal housing from a surrounding pressurized zone of the aircraft. A reinforcement structure is provided around the wall on the side of the surrounding pressurized zone. The separation wall is a shell coming to envelop the shape of the front landing gear, on the side opposite the opening of the internal housing, and the reinforcement structure comprises on the one hand longitudinal reinforcement elements extending on both sides of the shell and on the other hand transverse reinforcement elements connecting the longitudinal reinforcement elements. The shell has a first zone of considerable width accommodating the wheels of the landing gear, a second zone of lesser width accommodating the rod of the landing gear, and a third zone running from the second zone of lesser width, becoming wider and accommodating a portion of the mechanism for deployment/retraction of the landing gear. As a variant or in combination, the shell has on the one hand a front area of considerable height accommodating the wheels of the landing gear and on the other hand a rear area of lesser height accommodating the rod and a portion of the mechanism for deployment/retraction of the said landing gear and above which there extends at least one transverse reinforcement element making it possible to provide support for an equipment item of the aircraft.