摘要:
An aircraft (1) having at least one in-flight attitude control system (4, 5), in turn having at least one actuator (6; 7); and a hydraulic circuit connected to the actuator (6; 7) and having at least one pump (8) designed to deliver a first flow when the pressure of the hydraulic circuit is above a presettable threshold value. The pump (8) is designed to deliver a second flow greater than the first flow, and the aircraft (1) has a sensor (11a, 11b, 12, 13) for detecting a quantity associated with the pressure of the hydraulic circuit; and a programmable central control unit (10), which controls the pump (8) to deliver the second flow when the quantity detected by the sensor (11a, 11b, 12, 13) corresponds to a pressure of the hydraulic circuit below the threshold value.
摘要:
An aircraft (1) having: a fuselage (2); and a detecting device (10) for detecting the presence of ice caused by solidification of supercooled liquid droplets (20) having a characteristic dimension above a threshold value. The detecting device (10) has a preferential first portion (15) for accumulating the droplets (20); and the preferential first portion (15) is located so as to be visible from inside the fuselage (2).
摘要:
A rotor (4) for a helicopter (1), the rotor having a drive shaft (10) rotating about a first axis (B); a hub (11) connected functionally to the drive shaft (10) in angularly fixed manner with respect to the first axis (B) and in rotary manner with respect to a second axis (C) crosswise to the first axis (B); and two blades (12) connected to the hub (11) in angularly fixed manner with respect to the first and second axis (B, C) and in rotary manner with respect to respective third axes (D); the rotor (4) also having supporting means (50) for supporting the blades (12) with respect to the hub (11) in rotary manner about the respective third axes (D); the supporting means (50) having at least one supporting member (60) made at least partly of elastomeric material and interposed between a first surface (44) and a second surface (24) integral with a respective blade (12) and the hub (11) respectively; and the supporting member (60) deforming, in use, to permit rotation of the blade (12), with respect to the hub (11), about the respective third axis (D).
摘要:
A blade (6) for an antitorque tail rotor (3) of a helicopter (1), having a leading edge (8) and a trailing edge (9) opposite each other and elongated along a longitudinal axis (B) of the blade (6); the trailing edge (9), in use, interacts with the air current after the leading edge (8); the blade (6) also has two opposite surfaces (12, 13) extending between the leading edge (8) and the trailing edge (9), and a root portion (14a) extending from a radially inner first end (10), with respect to a rotation axis (A) of the blade (6), towards a second end (11) opposite the first end (10); and the root portion (14a), when sectioned in a plane perpendicular to the leading edge (8) and trailing edge (9), has a profile (G) asymmetrical with respect to a chord (P) joining the leading edge (8) and trailing edge (9).
摘要:
There is described a transmission (6) for a helicopter (1), the transmission having a movable transmission member (7); a casing (8) housing the movable member (7); lubricated supporting means (9) for supporting the movable member (7) inside the casing (8) and for rotation about an axis (A); and feed means (11) for feeding a lubricating fluid to the supporting means (9); the transmission (6) also has storage means (25) permitting gradual release of the lubricating fluid, and which are connected fluidically to the feed means (11) and to the supporting means (9) to permit lubrication of the supporting means (9) in the event of breakdown of the feed means (11); and the storage means (25) are angularly integral with the movable member (7) and located radially inwards of the supporting means (9) to feed the lubricating fluid centrifugally to the supporting means (9).
摘要:
A helicopter having a rotor (2), a fuselage (3) connected to the rotor (2) by connecting means (4), and a control device (6) for controlling vibration of the fuselage (3); the control device (6) including generating means (7) for generating signals associated with vibration of the fuselage (3), and actuating means (8) for producing a force on the fuselage (3) associated with the signals to reduce vibration; and the actuating means (8) being carried by the connecting means (4).
摘要:
There is described an undercarriage (1, 1') for a helicopter, having a supporting structure (6) connectable to the fuselage (4) of the helicopter, a wheel (7) suspended from the supporting structure (6), and a shock absorbing member (8) which has a bottom end portion (9) hinged to the wheel (7), and is interposed, in use, between the wheel (7) and the fuselage (4); the supporting structure (6) has an attachment (10) fixable to the fuselage (4), and a first and a second beam (12, 13) having first connecting portions (14, 15) hinged about a first axis (C) to each other and to a top end portion (16) of the shock absorbing member (8), and second connecting portions (17, 18) connected to separate portions of the attachment (10) in articulated manner and lower down with respect to the first connecting portions (14, 15).