Abstract:
A wiper arm assembly (14) has a load member (28), a wiper arm (24), and a blade load cam (32) with a cam slot (36). The load member (28) mates with a joint (40) disposed between first and second ends of the wiper arm (20). Changes in length of the load member (28) impose a force (L) in a lengthwise direction of the load member (28). The wiper arm (24) is configured to rotate relative to the blade load cam (32) about an axis proximate to the first end of the wiper arm (24). The cam slot (36) is configured to vary the length of the load member (28) as a function of a wiper angle in which the wiper angle is defined as the angle between the wiper arm (24) and a starting position of the wiper arm (24).
Abstract:
A wiper apparatus includes a wiper axis interface (102) configured for mounting a wiper assembly to a wiper drive (106). A lower wiper arm (110) extends from the wiper axis interface to a wiper mount (112) that is configured to connect the lower arm to an upper arm (114). A first end (124) of the lower wiper arm proximate the wiper axis interface has a first airfoil profile and wall thickness. A second end (126) of the lower wiper arm proximate the wiper mount has a second airfoil profile and wall thickness. An intermediate portion (128) of the lower wiper arm extending between the first and second ends has a transitioning airfoil profile and thickness that transitions from the first airfoil profile and wall thickness to the second airfoil profile and wall thickness.
Abstract:
A damper assembly (22; 22A) for an angle of attack sensor (10), the damper assembly (22; 22A) comprising: a rotor (32; 32A) including a conical portion (56; 56A); a damper housing (34; 34A) in which the rotor (32; 32A) is positioned, the damper housing (34; 34A) being axially adjustable with respect to the rotor (32; 32A) and including a tapered interior surface (58; 58A) that matches a profile of the conical portion (56; 56A) and interior housing threading on an interior surface (58; 58A) of the damper housing (34; 34A); a body (30; 30A) having a portion positioned in the damper housing (34; 34A), the body (30; 30A) connected to the damper housing (34; 34A) to form a chamber (36; 36A) between the body (30; 30A) and the damper housing (34; 34A), wherein the rotor (32; 32A) is located within the chamber (36; 36A), and wherein the body (30; 30A) includes exterior threading (52; 52A); and a locking mechanism (50) adjacent the damper housing (34; 34A) to fix the damper housing (34; 34A) with respect to the rotor (32; 32A).
Abstract:
A static plate heating arrangement includes a faceplate (12) including a port (20) extending from an exterior surface (16) of the faceplate to an interior surface (18) of the faceplate, a fixed resistance heater in thermal communication with the interior surface and surrounding the port, and a self-regulating heater (26) in thermal communication with the interior surface and surrounding the fixed resistance heater. The fixed resistance heater and the self-regulating heater are electrically connected in series.
Abstract:
A thermal management system for a sensor module is disclosed that includes a housing (10) enclosing the sensor module and having a bottom wall (28) with a reception port (26) formed therein, and a thermal isolation puck (20) installed within the reception port formed in the bottom wall of the housing for reducing the rate at which thermal energy from a heater located within an adjacent flush static plate (30) is lost to the housing.
Abstract:
An angle of attack sensor (10) includes a vane assembly (22) and a multi-piece faceplate (12) adjacent the vane assembly (22). The faceplate (12) includes a mounting plate (14) having an opening (42) and a heated chassis (16) positioned adjacent the mounting plate (14) and having a ring portion (50) extending through the opening (42), the ring portion (50) defining a ring-shaped deflector (54) that surrounds the vane assembly (22) and extends beyond an exterior surface (40) of the mounting plate (14).
Abstract:
An angle of attack sensor (10; 110) includes a vane assembly (22) and a multi-piece faceplate (12) adjacent the vane assembly (22). The faceplate (12) includes a mounting plate (14) having an opening (42) and a heated chassis (16) positioned adjacent the mounting plate (14) and having a ring portion (50) extending into the opening (42). The ring portion (50) includes a narrow fore portion (54) extending into the opening (42), a wide aft portion (56) extending into the opening (42), and an aft-located ramp connected to the wide aft portion (56) and extending through the opening (42) beyond an exterior surface (40) of the mounting plate (14).
Abstract:
An angle of attack sensor 10 includes a vane that is freely rotatable to align with a direction of an oncoming airflow over the vane. The airfoil 14 includes a root proximate a vane hub 26 that connects to a rotatable shaft 54, a tip opposite the root, a leading edge 44, a trailing edge 46 opposite the leading edge 44, a first lateral face 42A, a second lateral face 42B, and a heating element disposed within the airfoil 14 between the first and second lateral faces proximate the leading edge 44. The first lateral face 42A extends from the leading edge 44 to the trailing edge 46. The second lateral face 42B is opposite the first lateral face 42A and extends from the leading edge 44 to the trailing edge 46. The first and second lateral faces are symmetric about a chord 48 of the airfoil 14 and each have an outer surface profile that is nonlinear and geometrically convex from the leading edge 44 to the trailing edge 46.