4results about How to "Reduce drag coefficient" patented technology

This invention relates to the field of overhead power transmission conductor technology, and in particular to a tenon-and-mortise interlocking ultra-high strength aluminum alloy steel core conductor and its preparation method. The conductor comprises an ultra-high strength steel core and an outer ultra-high strength aluminum alloy conductive layer. The ultra-high strength steel core is a G3A grade galvanized steel core, and the ultra-high strength aluminum alloy conductive layer is composed of 3-4 layers of S / Z type tenon-and-mortise interlocking wires concentrically stranded. The S / Z type tenon-and-mortise interlocking wires are a single-layer, single-wire concave-convex interlocking structure. This invention optimizes the Mg-Si-Zr-RE-B multi-element alloy composition system, achieving a Mg to Si mass ratio of 1.0-1.4, and combines this with a "solution-cold drawing-double-stage aging" process. This maintains high conductivity while increasing tensile strength to ≥360MPa, achieving an excellent match of high strength and high conductivity, and significantly improving strength while ensuring unchanged conductivity.

This utility model relates to a wind-resistant vehicle body, comprising a main body consisting of a front fascia, side fascias, a roof, a floor, and a tailgate. The three sides of the roof facing away from the tail are curved beams with a smoothly transitioning curved surface structure. One side of the tail is a non-curved beam with a tail fin installed. Multiple teardrop-shaped air guides arranged in a predetermined direction are integrally formed on its corrugated plate. Curved columns are installed on both sides with extended end faces. After installation, these extended end faces overlap and connect with corresponding parts of the front and side fascias, forming a curved surface structure at the transition between the front and side fascias. An arc-shaped cover is installed at the junction of the curved columns and the roof, completely enclosing the junction to form a curved surface structure. This utility model, through the curved beams, curved columns, and arc-shaped cover forming multiple smoothly transitioning curved surface structures, effectively reduces airflow impact and eddies caused by traditional right-angle or acute-angle connections. The teardrop-shaped air guides guide the orderly flow of air from the roof, reducing turbulence interference.

This application relates to the field of vehicle component technology, and discloses a fixed glass assembly, a vehicle door, and a vehicle. The fixed glass assembly includes: a glass element; a bright strip frame having a first surface facing outwards along the width direction of the vehicle, the first surface including a first region and a second region distributed from front to rear along the length direction of the vehicle, the second region being recessed from the first region, at least the front edge of the inner surface of the glass element being fixed to the second region, and the outer surface of the glass element being flush with the first region; a support frame located on the edge of the inner surface of the glass element in a region not covered by the bright strip frame; the bright strip frame and the support frame are respectively used for connection with the door sheet metal of the vehicle door. The fixed glass assembly of this application, with its coordinated design of the bright strip frame and the glass element, eliminates the visual difference between the glass element and the vehicle body components, maintains the overall harmony of the vehicle's appearance, and also reduces wind noise and drag coefficient.