60 results about "Slender body" patented technology

The invention discloses an integration design method for a hypersonic slender body air vehicle and a three-dimensional inward rotation air inlet channel, and relates to near space aerocrafts. The method comprises the following steps that a three-dimensional shock wave hook face is designated according to the design requirement; a series of basic flow fields are derived reversely according to the relation between the discrete shock wave curve and the curvature center; a slender waverider vehicle lower surface molded line and the outlet section of the three-dimensional inward rotation air inlet channel are designed, and streamline tracing in the counter flow direction is conducted in the basic flow fields; the two-dimensional projection shape of a lip of the three-dimensional inward rotation air inlet channel is designed, and a three-dimensional configuration of the lip of the three-dimensional inward rotation air inlet channel is obtained according to the shock wave relation; and the hypersonic slender body air vehicle is subjected to geometric construction based on a compression molded face. The performance of an outer waverider vehicle front body and the performance of the three-dimensional inward rotation air inlet channel are simultaneously considered by the generated slender body hypersonic air vehicle and the air inlet channel, the lift drag characteristic is high, full-flow incoming flow capture can be ensured, engine thrust is increased, outflow resistance is reduced, the operation Mach number range of the air inlet channel is widened, and natural transition of an inner waverider part and an outer waverider part is achieved.

A method for modifying standard ANSI body sizing charts extrapolation sizes outside of the standard sizes if necessary. In a subsequent step, the user may incorporate different upper and lower body sizes. Correction factors are then applied if a tall/short, full/slender body type is selected. A new chart is output to the user in human readable form.

The invention relates to the technical field of medical instruments and discloses a driving device and a surgical operating instrument. The driving device comprises a driving component, and the driving component comprises a transmission component, a limiting mechanism, a first rotary sleeve and a second rotary sleeve, wherein the transmission component is used for driving an end effector to turn during acting, the limiting mechanism is mounted on a fixing handle and circumferentially locks a slender body when being positioned at a limiting position, the first rotary sleeve is mounted on the fixing handle and is circumferentially locked with the slender body, and the second rotary sleeve sleeves the first rotary sleeve coaxially. When being positioned at a turn adjusting position, the second rotary sleeve is in transmission connection with the transmission component and is matched with the limiting mechanism to enable the limiting mechanism to be kept at the limiting position; when being positioned at a rotation adjusting position, the second rotary sleeve is not in transmission connection with the transmission component, and the limiting mechanism restores. The driving device is capable of improving stability in switching between end effector turn control and slender body rotation control in the surgical operating instrument.

A decorative woven fibrous furniture includes a framework and a slender body formed of a plurality of stranded core elements made of a natural fiber, then the core elements are enclosed with a protective sheath made of a polymer added with natural fibrous powder. The outer surface of the protective sheath may have more than two colors, and provided with decorative figures of straie, patterns or the like so as to beautify the appearance of the product. Then the slender body is woven on the furniture thereby completing decorative woven furniture. The furniture made as such is a perfect environment-conscious product.

The invention discloses a four-component tubular wind tunnel balance with transverse jet, and the wind tunnel balance is integrally in a rod-shaped structure and comprises, from front to back, a balance and model installation cone, a balance Y-Mz element strain beam, a balance Z-My element strain beam, and a balance and pole installation cone, wherein a through hole is defined along the central axis of the wind tunnel balance, and the through hole is a jet medium gas pipeline. The four-component tubular wind tunnel balance with transverse jet provided by the invention can solve the interference of the jet medium gas pipeline to the balance measurement, and can accurately measure the aerodynamic forces and moments of the test model in the X and Y directions. The wind tunnel balance is smallin size and strong in versatility, and can be widely used in wind tunnel test with transverse jet of slender bodies.

The invention provides a surgical suture with reinforced barbs. The surgical suture comprises a slender body, wherein the slender body is a single-stranded suture with a smooth outer surface; at leastone barb is arranged on the slender single-stranded suture; the barbs are arrayed in one direction or double directions and can be positioned on the single side or the symmetric double sides of the slender single-stranded suture; and the barbs which are positioned on the symmetric double sides can be positioned at the same position or different positions of the slender single-stranded suture. Atleast one annular groove is formed in the lower edge of each barb, a biological adhesion agent coats the inside of each groove; at least one circle of suture is wound in each groove; after winding ofthe suture is finished, each groove is filled with a filling agent completely and smoothly. By the surgical suture with the reinforced barbs, the fixing strength of the single-stranded suture barbs can be improved effectively, the barbs are prevented from failing or being stripped from an axle of the suture, and the risk of failing of a clinical suture surgery is relieved.

The invention relates to a multi-highlight clustering analysis-based underwater slender body feature recognition method. The method comprises the following steps of: calculating a length and a motiondirection of an underwater slender body target by utilizing highlight space distribution of the underwater slender body target; and obtaining a clustering center of a target clustering point by adoption of an expected maximum value EM algorithm under a constraint condition through combining a clustering analysis method, and estimating a course and a length of the target. According to the method, the EM algorithm with the constraint condition is adopted, multi-highlight information is utilized, and headings (courses) and scales of underwater targets with slender body shapes are estimated; and the method has the characteristics of being simple, easy and reliable in work.

The invention relates to a transurethral bendable manual cystoscope, comprising a cystoscope body and a three-degree-freedom driving unit; the cystoscope comprises a high definition camera with a lighting module, a fixing disk, two first structure bones, a second structure bone, a supporting component and a thin wall pipe with a circular section, wherein two first structure bones and one second structure bone are evenly distributed in the form of triangle, and front ends of the three are commonly and tightly connected to one side of the fixing disk; the other side of the fixing disk is fixedly connected with the high definition camera, the lighting module of the high definition camera is located on an extension line of the second structural bone; the supporting component is a slender body structure, and the back end of the supporting component is connected with the three-degree-freedom driving unit; a channel for making cables of the first structure bone, the second structure bone and the high definition camera cross through are arranged on the supporting component; two first structure bones and the back end of the second structure bone are connected with the three-degree-freedom driving unit after crossing through the supporting component; the thin wall pipe is sleeved at the outer part of the supporting component.

The invention relates to a device for eliminating the flying lateral force of an aircraft at a high angle of attack, which comprises a thin film support frame and a retraction and extension mechanism. A retraction and extension seam is formed on a skin over the front part of the head part of the aircraft; a hinge (12) is fixedly arranged at the zenith of the head part in the aircraft, and the center of the hinge is positioned on the axial line of the aircraft; the thin film support frame is mounted in the aircraft, and the thin film support frame is positioned on the longitudinal symmetric plane of the aircraft; and the zenith end of a triangle of the thin film support frame is connected with the hinge (12) at the zenith of the head part of the aircraft, and can rotate around the center of the hinge (12). When the aircraft flies within the flying range of the high angle of attack, the thin film support frame is popped up, a film chip realizes the self-excited vibration in airflow, produces the unsteady flow around the film chip and realizes the control of asymmetric vortex, thereby eliminating the lateral force; when the aircraft recovers the small angle of attack state, the retraction and extension mechanism retracts the support frame into a front body of a slender body. The device is applicable to the aircrafts with the head taper of less than 42 degrees and characterized by simple structure and reliable performance.

The present invention relates to a nail clipper which comprises a slender body formed by an upper press lever and a lower press lever which are movably engaged, an upper cover and a lower cover which are respectively fitted onto the outer surfaces of the upper press lever and the lower press lever to form a slender etui, a lower blade which is movably pivotally engaged with one end of the upper press lever by means of a first pivotal axle, and an upper blade which is movably pivotally engaged with one end of the lower press lever by means of a second pivotal axle.

The invention relates to a parent fish culture method for varicorhinus macrolepis. The method comprises the steps of 1, performing flowing water culture; 2, modifying a fishpond; 3, screening out robust and complete parent fish with the slender body, and putting the screened parent fish into the fishpond which is cleaned and disinfected in advance for feeding; 4, reasonably matching bait of the parent fish; 5, periodically cleaning the fishpond. The parent fish culture method for varicorhinus macrolepis has the advantages that the parent fish is good in development in a wintering period, and the weight of the parent fish is increased obviously; the spring cave environment is simulated, and the gonad of the parent fish is developed to be fuller.

The invention relates to a foldable children's pushchair, which comprises a pushcart frame with an unfolded state and a folded state, a locking mechanism for locking the pushcart frame in the unfolded state, respectively arranged at the front bottom and the bottom of the pushcart frame. The front wheel assembly and rear wheel assembly at the rear of the bottom, the cart frame includes side brackets located on both sides of the cart, connected and supported between the side brackets on both sides and foldable along the left and right direction of the cart frame Bottom support frame and rear support frame, side support includes: front support, push handle, rear support, seat post, connecting support bar, seat post can slide along the front support, compared with traditional strollers, the rear support and The seat post is formed by bending a single bar, which has both the functions of the rear bracket and the seat post of the traditional cart, which reduces the interference between the bars during the folding process of the frame, and adopts the bottom bracket and the back support The frame allows the cart to be folded from the front, rear, left, and right directions. After folding, the body is slender, which is especially suitable for storage in narrow and long spaces.