摘要:
The invention refers to a method for operating a landing gear system, preferably in a tricycle configuration, wherein main landing gear (MLG) and the nose landing gear (NLG) are operable from a retracted position where they are housed respectively inside landing gear bays, to a fully extended position where they are extended for landing the aircraft. According to the invention, the extension of the nose landing gear (NLG) is delayed in time with respect to the extension of the main landing gear (MLG), and the nose landing gear (NLG) is kept retracted during a major part of the time that the main landing gear doors (MLGD) are extended. In this manner, vibrations on the main landing gear doors are reduced and incidents caused by fatigue are also reduced, with in turn implies that the maintenance cost of the aircraft is greatly reduced.
摘要:
The invention refers to a method for operating a landing gear system, preferably in a tricycle configuration, wherein main landing gear (MLG) and the nose landing gear (NLG) are operable from a retracted position where they are housed respectively inside landing gear bays, to a fully extended position where they are extended for landing the aircraft. According to the invention, the extension of the nose landing gear (NLG) is delayed in time with respect to the extension of the main landing gear (MLG), and the nose landing gear (NLG) is kept retracted during a major part of the time that the main landing gear doors (MLGD) are extended. In this manner, vibrations on the main landing gear doors are reduced and incidents caused by fatigue are also reduced, with in turn implies that the maintenance cost of the aircraft is greatly reduced.
摘要:
Un atterrisseur (2) auxiliaire orientable de nez est destiné à un aéronef (1) à voilure tournante ; cet atterrisseur (2) est escamotable sensiblement d'avant en arrière. Dans cet atterrisseur (2), un système oscillant (13) présente un débattement d'élévation (58), autour son extrémité d'articulation avant (52), supérieur à un débattement d'amortissement (59), et un vérin-amortisseur (9) possède des moyens de rétraction, au-delà d'une position de butée haute du système oscillant (13), de sorte que ce système oscillant (13) et le vérin-amortisseur (9) assurent à la fois des fonctions d'amortissement de chocs et d'escamotage de l'atterrisseur (2).
摘要:
Integrated high-speed aircraft, such as high-speed transport aircraft, and associated methods of manufacture. In one embodiment, a high-speed transport aircraft (100) includes a fuselage (102) having a first fuselage portion (104) and a second fuselage portion (106) positioned aft of the first fuselage portion (104). The first fuselage portion (104) can have a first cross-sectional area (114) and the second fuselage portion (106) can have a second cross-sectional area (116) that is less than the first cross-sectional area (114). The high-speed transport aircraft (100) can further include a wing (110) and a propulsion system (120). The wing (110) can extend outwardly from the fuselage (102) at least proximate to the second fuselage portion (106) and can include a leading edge region (112) and a trailing edge region (115). The propulsion system (120) can include an engine nacelle (122) fixedly attached to the wing (110) and laterally aligned with the second fuselage portion (106). In one aspect of this embodiment, the engine nacelle (122) can include an air inlet (126) positioned aft of the leading edge region (112) of the wing (110) and an exhaust gas outlet (128) positioned aft of the trailing edge region (115) of the wing (110).
摘要:
Hybrid transportation vehicle for ground and air consisting of a body (4), cabin (6), retractable wings (1), chassis and driving unit (8) with switching of the torque transfer between a propeller (9) situated at the rear of the vehicle and driven wheels (5), the vehicle containing reciprocal transformation mechanisms for transformation into an automobile or into an aircraft, where one or two first reciprocal transformation mechanisms for retraction and expansion of the wings (1) from or to a flying position are situated in the middle of the body (4); each first reciprocal transformation mechanism contains a first actuator and a vertical axis (2) for retraction and expansion of the wing (1) by tilting around the vertical axis between a flying position in which the axis of the wing is approximately perpendicular to the longitudinal axis of the vehicle, and a retracted position in which the wing axis is approximately parallel to the longitudinal axis of the vehicle; and two second reciprocal transformation mechanisms for changing the platform outline of the wings, each being situated separately in a wing body (1) and each containing a horizontal axis (3) of the wing and a second actuator, for tilting the rear part of each wing onto the top front part of the wing (1).
摘要:
Un dispositif de fixation intermédiaire (100) entre un fuselage d'aéronef et un train d'atterrissage d'aéronef. Il est composé d'au moins une structure de support (102 ; 103) semi-ouverte comprenant une paire de voiles (105, 106) sensiblement parallèles entre eux. Les voiles comprennent des premiers moyens de support (112) destinés à recevoir l'axe principal du train d'atterrissage et des seconds moyens de support (118) destinés à recevoir le ou les articulations de contrefiche du train d'atterrissage. Le dispositif comprenant deux structures de support (101 ; 102) reliées entre elles par un caisson central (103), le caisson central comprenant une paroi frontale (130), une paroi postérieure (132) et des parois de liaison (134) reliant ces deux parois
摘要:
This storage compartment for the front landing gear is intended for an aircraft having a set of collapsible landing gears having a nose gear (4) centered on a longitudinal median plane of the fuselage (1). This storage compartment forms a sealed partition between a pressurized area and the housing of the nose gear in its collapsed position. It has a reinforced upper face having an area that is appreciably flat and appreciably horizontal when the aircraft is on the ground, so as to form a floor of a pressurized compartment of the aircraft.
摘要:
Un atterrisseur (2) auxiliaire orientable de nez est destiné à un aéronef (1) à voilure tournante ; cet atterrisseur (2) est escamotable sensiblement d'avant en arrière. Dans cet atterrisseur (2), un système oscillant (13) présente un débattement d'élévation (58), autour son extrémité d'articulation avant (52), supérieur à un débattement d'amortissement (59), et un vérin-amortisseur (9) possède des moyens de rétraction, au-delà d'une position de butée haute du système oscillant (13), de sorte que ce système oscillant (13) et le vérin-amortisseur (9) assurent à la fois des fonctions d'amortissement de chocs et d'escamotage de l'atterrisseur (2).