Abstract: The present disclosure discloses an aircraft (e.g., unmanned aerial obstacle detection method and apparatus, to reduce aircraft obstacle detection errors, and improve aircraft obstacle detection precision. The apparatus performs image collection on a target obstacle by using a binocular camera, to obtain a first image and a second image. After determining a first pixel location obtained by projecting the target obstacle in the first image, and a second pixel location obtained by projecting the target obstacle in the second image, the apparatus calculates a disparity between the first pixel location and the second pixel location and a depth value between the binocular camera and the target obstacle according to the disparity and a preset disparity-to-depth mapping matrix, to detect whether a flight direction of the aircraft is blocked by an obstacle.

Abstract: In a first stage or operation, at least one shear initiation breakthrough opening is formed through the ultra-high strength material sheet at an interior location. A leading terminal end of each of at least two inclined shearing edges of an interior opening shearing tool is positioned in the at least one shear initiation breakthrough opening. The interior opening shearing tool is different from the breakthrough opening forming tool. In a second stage or operation, shearing of the material is initiated from the at least one shear initiation breakthrough opening by advancing the at least two inclined shearing edges of the interior opening shearing tool against the ultra-high strength material sheet and relative to a corresponding shearing tool.

Abstract: Aspects of the disclosure provide a method for flight control and a control apparatus for flight control. In an example, a first aircraft includes the control apparatus for flight control and the control apparatus includes interface circuitry and processing circuitry. The interface circuitry receives a first flight control instruction and a flight parameter. The first flight control instruction and the flight parameter are sent by a mobile terminal device. The flight parameter is indicative of a preset flight altitude. In response to the first flight control instruction, the processing circuitry controls the first aircraft to fly to the preset flight altitude. Further, the processing circuitry detects an existence of a second aircraft within a surrounding of the first aircraft, and adjusts a flight posture of the first aircraft according to the existence detection of the second aircraft within the surrounding of the first aircraft.

Abstract: In a first stage or operation, at least one shear initiation breakthrough opening is formed through the ultra-high strength material sheet at an interior location. A leading terminal end of each of at least two inclined shearing edges of an interior opening shearing tool is positioned in the at least one shear initiation breakthrough opening. The interior opening shearing tool is different from the breakthrough opening forming tool. In a second stage or operation, shearing of the material is initiated from the at least one shear initiation breakthrough opening by advancing the at least two inclined shearing edges of the interior opening shearing tool against the ultra-high strength material sheet and relative to a corresponding shearing tool.

Abstract: A binder assembly for stamping sheet material includes an upper die, a stationary punch, an outer ring, and an inner ring. The stationary punch is aligned to be received inside a cavity of the upper die. The outer ring and the inner ring extend around the punch and are movable relative thereto. The inner ring includes teeth on a top surface and is positioned an initial distance from an end of the punch. The upper die is driven along the punch the initial distance such that the punch is received inside the cavity of the upper die a partial distance and a remaining distance such that the punch is received inside the cavity of the upper die a deeper distance.

Abstract: A binder assembly for stamping sheet material includes an upper die, a stationary punch, an outer ring, and an inner ring. The stationary punch is aligned to be received inside a cavity of the upper die. The outer ring and the inner ring extend around the punch and are movable relative thereto. The inner ring includes teeth on a top surface and is positioned an initial distance from an end of the punch. The upper die is driven along the punch the initial distance such that the punch is received inside the cavity of the upper die a partial distance and a remaining distance such that the punch is received inside the cavity of the upper die a deeper distance.

Abstract: A sheet metal material is stamped into a formed shape having a side wall between a central portion and a flange portion. The central portion is held between an upper pad and a die, and the flange portion is held between an upper binder and a lower binder. A post-stamping compression force is applied along a length of the side wall of the formed shape. For example, application of the post-stamping compression force includes moving the lower binder relatively toward the upper pad, such as by delaying a return of the upper pad during a portion of a return of the lower binder. During application of the post-stamping compression force, an outward force is applied against an inner surface of the side wall to insure any bowing of the side wall is in an outward direction.

Abstract: An outer bend radius is cold formed in an outer position within a final arc of the angled corner with an outer bend radius male die member. A central bend radius is cold formed in a central position spaced from the outer position and within the final arc of the angled corner with a central bend radius male die member. An inner bend radius is cold formed in an inner position that is spaced from the outer and central positions and the inner position is within a final arc of the angled corner with an inner bend radius male die member. The angled corner is transferred between each of the bend radii male die members using a continuous advanced high strength metal sheet in which the angled corner is formed.

Abstract: A stamping apparatus for stamping a blank, including a lower die defining a cavity, the lower die including a land portion surrounding the cavity; a movable upper die including a drawing punch that corresponds to the cavity; and a binder movable towards the land portion of the lower die for engaging an edge portion of the blank, wherein the land portion of the lower die includes a plurality of depressions and the movable binder includes a plurality of beads that correspond to the depressions that mate to crimp the edge portion of the blank when the movable binder engages the edge portion of the blank, each of the plurality of depressions between separated by a flat region of the land portion, and each of the plurality of depressions including a central portion that extends along the cavity and a pair of end portions that extend away from the cavity.

Abstract: A metal stamping tool includes a hybrid magnetorheological-nitrogen spring including a housing having an interior wall defining an interior volume. A fixed divider separates the interior volume into a nitrogen gas chamber and a magnetorheological fluid chamber. A piston extends into both the nitrogen gas chamber and the magnetorheological fluid chamber. The piston defines a magnetorheological fluid gap within the magnetorheological fluid chamber. An electric coil positioned adjacent the fluid gap to apply a magnetic field to magnetorheological fluid within the fluid gap when the electric coil is energized.

Abstract: A stamping apparatus for stamping a blank, including a lower die defining a cavity, the lower die including a land portion surrounding the cavity; a movable upper die including a drawing punch that corresponds to the cavity; and a binder movable towards the land portion of the lower die for engaging an edge portion of the blank, wherein the land portion of the lower die includes a plurality of depressions and the movable binder includes a plurality of beads that correspond to the depressions that mate to crimp the edge portion of the blank when the movable binder engages the edge portion of the blank, each of the plurality of depressions between separated by a flat region of the land portion, and each of the plurality of depressions including a central portion that extends along the cavity and a pair of end portions that extend away from the cavity.

Abstract: The present disclosure provides stamping apparatus for stamping a blank. The stamping apparatus includes a first die and a blank-holding ram. The first die includes a forming cavity and a depression positioned outboard of the forming cavity. The depression is defined by a first corner proximate the forming cavity and a second corner distal the forming cavity in the outboard direction from the first corner and the forming cavity. The blank-holding ram includes a bead configured to engage a portion of the blank into the depression when the blank is positioned between the first die and the blank-holding ram. The bead includes a third corner proximate the forming cavity and a fourth corner surface distal the forming cavity in the outboard direction from the third corner. The first corner of the depression includes a radii of curvature greater than a radii of curvature of the second corner of the depression and the radii of curvature of the third and fourth corners of the bead.

Abstract: A stamping apparatus includes a lower die defining a cavity, with a land portion surrounding the cavity. A movable upper die includes a drawing punch that corresponds to the cavity. A binder movable towards the land portion of the lower die engages an edge portion of the blank, wherein the land portion of the lower die and the movable binder each include a plurality of beads that crimp the edge portion of the blank when the movable binder engages the edge portion of the blank. The plurality of beads are oriented orthogonal to a terminal edge of the edge portion. By orienting the plurality of beads in this manner, the crimped edge portion of the blank is allowed to move inboard towards the cavity when the blank is engaged by the drawing punch before being constrained by a throat portion defined by the binder and the lower die.

Abstract: A stamping apparatus includes a lower die defining a cavity, with a land portion surrounding the cavity. A movable upper die includes a drawing punch that corresponds to the cavity. A binder movable towards the land portion of the lower die engages an edge portion of the blank, wherein the land portion of the lower die and the movable binder each include a plurality of beads that crimp the edge portion of the blank when the movable binder engages the edge portion of the blank. The plurality of beads are oriented orthogonal to a terminal edge of the edge portion. By orienting the plurality of beads in this manner, the crimped edge portion of the blank is allowed to move inboard towards the cavity when the blank is engaged by the drawing punch before being constrained by a throat portion defined by the binder and the lower die.

Abstract: The present disclosure provides stamping apparatus for stamping a blank. The stamping apparatus includes a first die and a blank-holding ram. The first die includes a forming cavity and a depression positioned outboard of the forming cavity. The depression is defined by a first corner proximate the forming cavity and a second corner distal the forming cavity in the outboard direction from the first corner and the forming cavity. The blank-holding ram includes a bead configured to engage a portion of the blank into the depression when the blank is positioned between the first die and the blank-holding ram. The bead includes a third corner proximate the forming cavity and a fourth corner surface distal the forming cavity in the outboard direction from the third corner. The first corner of the depression includes a radii of curvature greater than a radii of curvature of the second corner of the depression and the radii of curvature of the third and fourth corners of the bead.