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993 results about "Upper wing" patented technology

Wing structure having lamellar flow flowing control and separation control

The invention discloses a wing structure with flow control and separation control of laminar flow. A plurality of A micropores are arranged at the front end of the vertical center line of the upper wing surface of a wing, and are neatly arranged in lines and rows to form an inspiration zone; a plurality of B micropores are arranged at the back end of the vertical center line of the upper wing surface of the wing, and are neatly arranged in lines and rows to form an air blowing zone; a communicating channel in the inspiration zone and the air blowing zone is called an air flow channel, namely, an inlet of the air flow channel is communicated with the inspiration zone, while an outlet of the air flow channel is communicated with the air blowing zone; the air flow channel is arranged in the wing; the air flow channel consists of a front air flow channel, a middle air flow channel and a back air flow channel, wherein, the middle air flow channel is in an elliptic shape; an inspiration pump is arranged in the middle air flow channel; the front air flow channel and the back air flow channel are designed into a flaring shape and are oppositely arranged. The wing of the invention can delay the transition of a bounding layer from lamina flow to turbulent flow by a control method for adjusting the capacity of blowing and inspiration so as to reduce the frictional resistance on an object surface, and can delay the flow separation so as to improve the stall performance of wing profile.
Owner:BEIHANG UNIV

Lower edge open truss style corrugated steel web combination beam

A truss-type corrugated steel web composite beam with an open bottom chord belongs to a bridge support member. The bottom chord opened and truss-type corrugated steel web composite beam comprises an upper wing edge concrete slab, a corrugated steel web and a bottom chord opened truss-type rectanglar steel tube concrete member. Compared with steel truss-type web composite corss section, the invention adopts the corrugated steel web with rather high shear strength to replace a steel web member, so as to guarantee quite high shear bearing capacity. The opened truss-type bottom chord is composed of two parallel-arranged rectanglar steel tubes arranged in parallel and internally cast concrete, as well as horizontal braces and batter braces between the rectanglar steel tubes. Moreover, the bottom chord adopts the steel tube concrete member to overcome the problem of rather high work volume that, in traditional composite cross section of corrugated steel web box beams and steel truss-type webs, such execution measures as scaffolding, formwork-support, concrete casting and etc. should be taken for lower wing edge concrete slabs. Meanwhie, the invention can effectively improve structure crack resistance, avoid crackage exposure and etc, and considerably increase structure durability. The bottom chord is a brace-connected open-type structure with advantages of simple structure and fast, smooth and convenient execution.
Owner:TSINGHUA UNIV

Shaped-steel concrete frame-steel supporting structure section-changeable conversion node

The invention is a variable section conversion node for profiled steel concrete framework-steel support structure, interconnecting in-pillar profiled steel, in-beam profiled steel, steel support, in-pillar reinforced concrete and in-beam reinforced concrete and pouring then into an organic whole, where the steel support is orthogonally connected with in-pillar an in-beam profiled steel flange plates by section conversion, the web of the in-beam profiled steel in the node connection position is converted into heightening variable section web and the top surface of the heightening variable section web is welded with widening variable section upper wing plate, the bottom surface of the heightening variable section web is welded with widening variable section lower wing plate; the shape of the steel support in the node connecting position is converted into structure of variable section node conversion region and two flange plates of the steel support in variable section conversion region are orthogonally connected with the in-pillar and in-beam profiled steel respectively. And the invention intensifies fore bearing performance of node regions of the profiled steel concrete framework-steel support structure and ability of cooperating of profiled steel and reinforced concrete.
Owner:BEIJING URBAN CONSTR DESIGN & DEV GRP CO +1

Airplane with combined-wing layout of flying wing and forward-swept wings

The invention provides an airplane with a combined-wing layout of a flying wing and forward-swept wings. The airplane is characterized in that thin-wing type vertical columns A and B are additionally arranged at the 70% wingspan positions of the outer sides of two side wings of a flying-wing airplane with backward-swept wings, a thin-wing type vertical column C is additionally arranged at the tail part of the flying-wing airplane, and horizontal forward-swept wings are additionally arranged at the top ends of the three thin-wing type vertical columns A, B and C so as to form the combined-wing layout of the flying wing and the forward-swept wings; elevators are arranged on the horizontal forward-swept wings and a rudder is arranged on the vertical column C; a duct type air inlet channel is adopted on the upper wing surface of the flying wing, and cracking type drag rudders are distributed at the thin-wing type vertical columns A and B. The airplane provided by the invention has the advantages that under the condition that the structure strength is effectively guaranteed, the effective aspect ratio of the wings is increased, the induced drag is reduced, the lift-drag characteristics of the airplane are improved, the stealth performance of the airplane is improved, direct-force control of the airplane in the vertical direction is realized and the detecting accuracy under the maneuvering condition is improved.
Owner:BEIHANG UNIV

Steel column and beam structure with corrugated steel web and special welding device thereof

The invention relates to a steel column and beam structure used in the building and a welding device thereof, particularly discloses a steel column and beam structure with a corrugated steel web and a special welding device thereof. The steel column and beam structure comprises an upper wing plate, a lower wing plate and a web plate arranged between the upper wing plate and the lower wing plate, wherein the upper wing plate and the lower wing plate are made of plates with the thickness of 4-30mm, the web plate is a corrugated steel web plate with the thickness of 4-10mm, and the surfaces of the upper wing plate, the lower wing plate and the web plate are prepared with 50-500Mu m of roughness; the welding device of the steel column and beam structure with the corrugated steel web comprises a welding tractor and a welding gun arranged on the welding tractor, wherein tool sliding bars which are symmetrical are arranged on the welding tractor, a magnetic adsorption piece is arranged at the bottom of the welding tractor, four driving wheels are symmetrically arranged at two sides of the magnetic adsorption piece, and a track positioning retainer is arranged in a bracket at the middle part of the welding tractor. The middle web plate adopts the corrugated steel web plate, the steel beam and column with the corrugated steel web is welded by using the special welding device, therefore, the invention has the advantages of light weight and strong earthquake resistance.
Owner:ZHEJIANG CTB WAVEFORM STEEL WEB

Vaginal dilator with upper and lower wings provided with auxiliary wings

The invention provides a vaginal dilator with upper and lower wings provided with auxiliary wings, comprising an upper wing, a press handle, a lower wing, a handle, an upper auxiliary wing and a lower auxiliary wing, wherein the press handle is integrated with the upper wing and stretches downwards along an obtuse-angle direction at the rear end of the upper wing, and the handle is integrated with the lower wing and stretches downwards in an approximate right angle direction along the rear end of the lower wing; the two sides of the rear ends of the upper wing and the lower wing are connected through pin shafts; the press handle is meshed with the handle through an expansion fixed structure; the upper auxiliary wing and the lower auxiliary wing arranged at the inner sides of the upper wing and the lower wing are respectively connected with the upper wing and the lower wing and are provided with a channel; and the channel comprises a channel main body and a channel cover, the channel cover is matched with the channel main body in a sealing mode, and the channel main body is provided with at least one hole facing the inner sides of the upper wing and the lower wing. Compared with the prior art, the vaginal dilator with the upper and lower wings provided with the auxiliary wings greatly improves the smoke discharge capability and provides a channel for installing a lighting device and a camera device. The vaginal dilator has the advantages of simple structure and easy manufacture.
Owner:江苏奥博金医药科技有限公司
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