摘要:
A roll steering method subdivides the direction of an aircraft control surface into two elements and, during a roll control operation using ailerons, steers an upper element of the control surface in the roll direction and a lower element in the opposite direction.
摘要:
The invention relates to a section of fuselage for an aircraft, including frames and bays for receiving cabin windows. According the the disclosed embodiments, at least some of the frames include at least one frame segment that surrounds at least one bay, the frame segment having two branches that are disposed to the side of the bay. The ends of the branches are attached to each of the ends of the frame segment such as to form a Y.
摘要:
A device for controlling a vortex trail generated by an oblong element of an aircraft bearing surface includes a control component arranged on a fixing element of the oblong element and on a bearing surface such that a base of the control component contacts the leading edge of the bearing surface. The control component has a triangular shape, on a plane perpendicular to the longitudinal axis thereof, whose two adjacent sides form flanks interconnected by a rounded edge.
摘要:
A weaving loom including a mechanism drawing-in threads, for insertion of picks, and for formation of a weaving shed, so as to render possible formation of a continuous angle or corner by a thread during weaving. The loom preferably also includes a vertical offset system, so that it is possible to weave a three-dimensional surfacic structure, the threads of which are continuous between the faces and at the level of the edges. The loom can be configured particularly for manufacture of continuous tridedral corners that are used as reinforcements for composite structures.
摘要:
A device for issuing authorization to act on the operating conditions of an aircraft engine and engine control system includes a first unit for determining particular parameters concerning the aircraft, including the position of a power lever controlling the supply of fuel to the engine, and a second unit for determining, based on the particular parameters, whether the aircraft is in a state authorizing an action on the operating conditions of the engine and for issuing, as the case may be, a corresponding authorization signal.
摘要:
The invention relates to a method and device for reducing the wake vortices of an aircraft during the approach/landing phase. Spoilers are automatically ordered to deploy when lift-augmenting aerodynamic surfaces are ordered to deploy, and are automatically ordered to retract when at least one of the following three conditions holds: the angle of incidence α of the aircraft is equal to or greater than an incidence threshold αs; the speed Vc of the aircraft is equal to or less than a speed threshold Vs; and the aircraft is instigating a go-around maneuver.
摘要:
The invention relates to acoustic lining for an aircraft, which can cover a leading edge, such as an air inlet in the nacelle of a propulsion unit, said lining comprising: (i) from the inside outwards, a reflective layer (28), at least one cellular structure (30) and an acoustically resistive structure (32) having a pre-determined proportion of open surface; and (ii) at least one frost treatment system in the form of at least one heating layer (46) comprising open zones through which acoustic waves can pass, which co-operate at least partially with the open zones in the acoustically resistive structure. The invention is characterised in that the acoustically resistive structure (32) includes at least one structural layer (36) with openings (38) and in that said at least one heating layer (46) is disposed under the structural layer (36).
摘要:
A stiffener for a structure submitted to tensile and/or compression and/or shear stresses, that includes a shaped section including: a contact area with an element to be stiffened having a closed cross-section and providing stability, the aforementioned area including first and second legs; and a core normal to the element to be stiffened that provides a support surface capable of element recovery, the aforementioned core being formed by one of the two legs. Application in aircraft structures.
摘要:
This invention relates to an aircraft viewing system comprising: a plurality of generation devices (3301, . . . , 330k; 7301, . . . , 730k; 8301, . . . , 830k) adapted to generate video flows from aircraft data; a plurality of display units (3101, . . . , 310n; 7101, . . . , 710n; 8101, . . . , 810n), wherein each display unit is adapted to display an intrinsic display function as well as a video image representing at least one video input; at least one video distribution unit (3201, . . . , 320p; 7201, . . . , 720p; 8201, . . . , 820p) adapted to switch the video flows generated by said generation devices to the video inputs of said display units.
摘要:
A device and method for estimating a side-slip angle (βe) of an aircraft moving in the air includes a receiving unit which receives a measured side-slip angle (βl) presented locally by the air relative to the aircraft, and a determining unit which determines the side-slip angle (βe) of the aircraft as a function of the measured angle (βl) and of an information item about the incidence (α) of the aircraft.