6results about How to "Good aerodynamic shape" patented technology

The novel wingtip combined navigation lamp for the unmanned aerial vehicle comprises navigation lamp bodies, the navigation lamp bodies are arranged on a left wing and a right wing of the unmanned aerial vehicle correspondingly, each navigation lamp body comprises a lampshade, pressing plates, a shell, a printed board assembly, a cover plate, an electric connector and a light source assembly, the lampshade covers the shell, the pressing plates are arranged above the two ends of the lampshade, and the pressing plates are arranged above the two ends of the lampshade. The lampshade is fixed to the shell through the pressing force of the pressing plate in the vertical direction, the prism structure and the bead face structure are arranged on the surface of the lampshade, and the lampshade, the prism and the bead face are integrally machined, so that integrated design of the lampshade, the prism and the bead face is achieved, compared with the prior art, spatial light distribution better meets the corresponding index requirement, and the light quality is improved. The device has the advantages of being small in size, light in weight, compact in structure and beneficial to small-size integration of products, and technical support is provided for precise light distribution of the combined navigation lamp of the unmanned aerial vehicle.

The utility model discloses a special lifting body type amphibious undercarriage for a vertical take-off and landing aircraft, which comprises a vertical take-off and landing aircraft body, a sleigh type undercarriage main body, an undercarriage support column, a lifting body type buoy and a connection limiting mechanism, and the sleigh type undercarriage main body is fixed at the bottom of the vertical take-off and landing aircraft body through the undercarriage support column. The lifting force body type floating cylinder is detachably connected to the bottom of the sled type undercarriage body through the connecting and limiting mechanism, and the sled type undercarriage body and the lifting force body type floating cylinder are both in bilateral symmetry about the central axis of the vertical take-off and landing aircraft body. The assembling state and the disassembling state of the lifting force body type buoy can be achieved, and in the disassembling state, the requirement for vertical take-off and landing of a vertical take-off and landing aircraft on land can be met; in the assembled state, the requirement for vertical take-off and landing of the vertical take-off and landing aircraft on the water surface can be met, the vertical take-off and landing aircraft can take off and land in two different environments, and the use range of the vertical take-off and landing aircraft is widened.

The invention relates to a shape memory alloy locking device, belongs to the field of mechanical locks, and solves the problems that a traditional shape memory alloy locking device is numerous and jumbled in structure and cannot be repeatedly used. The locking device comprises an upper shell and a lower shell, the upper shell and the lower shell are assembled together to define an internal working space, a friction plate is rotatably arranged in the working space, the locking device further comprises a limiting plate and a limiting plate control piece, the limiting plate is arranged between the friction plate and the upper shell, and the limiting plate control piece is arranged between the friction plate and the upper shell. The limiting plate control piece is made of shape memory alloy, the shape memory alloy stretches out and draws back to control the limiting plate to move up and down, and therefore the friction plate is unlocked and locked through the limiting plate. The locking device is simple and compact in structure and can be repeatedly used.

The utility model relates to a kind of gliding guidance aircrafts suitable for multiple air drop platform, including hanger and glider, the upper end of hanger is equipped with upper connector, the lower end of hanger is equipped with lower connector and restraint, the upper end of glider is equipped with multiple lifting lugs, restraint is symmetrically arranged in the both sides of hanger, the both sides of glider are symmetrically articulated with spring wing, lifting lug is equipped on spring wing, drive mechanism is equipped in hanger, the output end of drive mechanism is connected with bolt and restraint, bolt is used to connect or separate lower connector and lifting lug, restraint is used to connect or release lifting lug. By connecting glider with hanger, the design constraint of carrier storebracket scheme to glider is simplified or even eliminated. In order to adapt to different carrier storebracket, only need to adjust the connection relationship of hanger and carrier storebracket, and glider is not affected, greatly reduce the difficulty of system modification design, use adjustment, significantly shorten modification design cycle, increase the application range of gliding guidance aircraft.

This invention discloses a windbreak wall, comprising a windbreak panel and an angle adjustment device. The windbreak panel is arranged on one or both sides of a railway bridge, with its leeward side facing the train. The angle adjustment device includes two columns respectively arranged on the left and right sides of the windbreak panel. The lower part of the windbreak panel is rotatably connected to the lower part of the columns, and a motor is installed on the upper part of the columns. The output shaft of the motor faces the windbreak panel and is connected to a gear. Mounting plates are connected to the left and right sides of the upper part of the windbreak panel, perpendicular to the windbreak panel. An arc-shaped rack is fixed to the mounting plate, and the gear meshes with the arc-shaped rack to drive the windbreak panel to adjust its angle. The windbreak wall provided by this invention can adjust its angle according to the actual wind and sand environment, thereby reducing the overturning moment of strong winds on the train, ensuring the safe operation of the train in strong wind and sand environments, and ensuring the safety of passengers.

The present invention provides a fairing air conditioning interface, comprising: a cover, a pipe mouth, a rotating shaft, a locking pin and a spring; the pipe mouth comprises a pipe mouth inner ring and a pipe mouth outer ring; the first end of the cover is connected to the first end of the pipe mouth outer ring through a rotating shaft to open or close the pipe mouth inside the fairing; at least two locking pin mounting brackets are arranged at intervals at the second end of the cover, and the two ends of the locking pin are respectively connected to the cover through the two locking pin mounting brackets; the spring is sleeved on the locking pin, and the spring is used to reset the locking pin; the second end of the pipe mouth outer ring is provided with a slide groove, and the locking hole is connected to one end of the slide groove; the locking hole is used to lock the locking pin when the cover closes the pipe mouth, and the slide groove is used to guide the locking pin during the closing process of the cover. The air conditioning interface can realize the automatic closing of the cover and effectively reduce the risk that the cover of the air conditioning interface cannot be closed.