8results about How to "Increase the windward area" patented technology

A self-adaptive wind-resistant and vibration-suppressing shutter unit capable of constraining all shutters belongs to the technical field of ventilation and air conditioning and comprises a shutter unit, a driving assembly and a self-adaptive wind-resistant and vibration-suppressing device. Each shutter unit comprises a window frame and M shutters, and M is larger than or equal to 3; the shutters are hinged to the window frame through rotating shafts arranged at the upper and lower ends of the shutters; the driving assembly is connected with M shutters of the shutter unit; the self-adaptive wind-resistant vibration suppression device is a self-adaptive flexible adsorption belt and is arranged on the windward side of the shutter unit. The two ends of the self-adaptive flexible adsorption belt are fixedly connected to the leftmost shutter and the rightmost shutter of the shutter unit respectively to form flexible constraint, and the middle part of the self-adaptive flexible adsorption belt is adsorbed to the middle shutter in a self-adaptive mode through the windward side air inlet pressure effect to form single-side contact constraint; shutters at the adjacent ends of the left and right adjacent louver units are hinged through rigid connecting rods, and two-force component constraint is formed. Effective cooperative constraint of all the shutters is comprehensively achieved, and then the wind resistance and vibration suppression effects of the shutters are improved.

The application relates to the technical field of starting motors, and particularly discloses a fan heat dissipation type starting motor for a centrifugal pump, which comprises a base and a machine shell fixedly connected to the base, a strip-shaped air inlet is arranged on the machine shell and penetrates through the inside and outside of the machine shell, a filter screen for shielding dust is arranged in the strip-shaped air inlet, a rotor is arranged in the machine shell, and a transmission shaft penetrates through the rotor coaxially. At the beginning of starting, the fan blade cannot rotate at high speed, so that the starting response slow degree and the starting current size of the centrifugal pump can be reduced, the additional energy consumption loss of the motor at the initial stage of starting can be reduced, the windward area of the fan blade at the initial stage of starting of the starting motor is small, so that the rotating resistance of the fan blade can be reduced, the starting response slow degree and the starting current size of the centrifugal pump can be further reduced, and the additional energy consumption loss of the motor at the initial stage of starting can be further reduced.

The invention discloses a variable rotor duct system and a tilt rotor aircraft, and relates to the technical field of aircrafts, the variable rotor duct system comprises a transmission shaft, a rotor assembly and a duct assembly; the transmission shaft is in transmission connection with an aircraft body; the rotor assemblies are connected to the transmission shaft; the duct assembly comprises a deformation shell and a first driving mechanism, the first driving mechanism is connected to the transmission shaft, and the deformation shell is arranged outside the rotor wing assembly in a surrounding mode in the circumferential direction; the first driving mechanism is in transmission connection with the deformation shell, the first driving mechanism can drive the deformation shell to circumferentially expand in the direction away from the transmission shaft so as to form a duct configuration, and the first driving mechanism can further drive the deformation shell to circumferentially contract in the direction close to the transmission shaft so as to form a fairing configuration. According to the variable rotor duct system and the tilt rotor aircraft provided by the invention, the rotor duct system gives consideration to high hovering efficiency and low forward flight resistance, and the overall aerodynamic efficiency and engineering application value of the tilt rotor aircraft are improved.

The application discloses a low-orbit atmospheric density measuring device and method in parallel with orbit departure, and belongs to the field of low-orbit spacecraft measurement and control. The application comprises a device shell, a film ball, an inflation system, a patch type pressure sensor, a pressing unlocking mechanism and a communication module B. The application adopts a spherical film device to inflate and expand to increase the windward area of constellation satellites, and improve the orbit departure efficiency of the constellation satellites. Meanwhile, the patch type pressure sensor is used to measure the resultant force borne by the orbit departure-measuring system. The real-time low-orbit atmospheric density is calculated in combination with the orbit data, the shape structure and the resistance coefficient of the orbit departure-measuring system. The folding method of the film ball is a combination of plane spiral bonding and z-type folding. The multiple plane petals of the film ball are sequentially spiral bonded and then z-type folded to form a cubic shape, so that the film ball is conveniently packaged. The application realizes the atmospheric density measurement of the area passed by the constellation satellites during the orbit departure based on the patch type pressure sensor, and has the advantages of low cost and real-time measurement.

The invention relates to the technical field of new energy collection, and particularly discloses a communication signal tower integrating new energy collection and storage, unmanned aerial vehicle operation and maintenance and electric vehicle charging, the communication signal tower comprises a signal tower base, and the bottom of the side face of the signal tower base is fixedly connected with an automobile charging platform; the position, located above the automobile charging platform, of the side face of the signal tower base is fixedly connected with an unmanned aerial vehicle platform, the deflection assembly comprises a second telescopic rod, a driving shaft of the second telescopic rod is fixedly connected with a rotating seat, and deflection fan blades are rotationally connected to the side face of the rotating seat. The side faces of the deflection fan blades are rotationally connected with one ends of adjusting pull rods, and the ends, away from the deflection fan blades, of the adjusting pull rods are rotationally connected with the side faces of the fixed ends of the second telescopic rods. The purpose of facilitating photovoltaic collection and utilization and unmanned aerial vehicle maintenance is achieved.

The unmanned sailboat wing sail with the telescopic and windward area changing functions comprises a fixed sailboard, a movable sailboard, a linear driving module, an opening and closing blade and a blade adjusting mechanism, the fixed sailboard and the movable sailboard are hollow wing-shaped boards, and the movable sailboard is vertically arranged on the inner side of the fixed sailboard in a sliding mode. The linear driving module drives the movable sailboard to ascend or descend, so that the movable sailboard extends out of or retracts into the inner side of the fixed sailboard. A square window is formed in the movable sailboard, and the multiple opening and closing blades are sequentially arranged on the inner side of the square window from top to bottom and are in running fit with the movable sailboard. The blade adjusting mechanism drives the opening and closing blades to rotate synchronously in the same direction, so that the square window is opened or closed. The height and the windward area of the wing sail are adjusted by introducing the structure of the liftable movable sailboards and the opening and closing blades, so that different wind speeds, sea conditions and sailing requirements are met, the sailing performance of the unmanned sailboat is optimized, the sailing thrust is precisely controlled, and the stability and the safety are improved.

This invention discloses a rapid heat exchange device, comprising a heat exchange medium inlet pipe, a mounting box, and a heat exchange medium outlet pipe connected sequentially along a first direction. The mounting box contains several groups of heat source groups arranged sequentially along the first direction. Each heat source group includes several first heat sources and second heat sources arranged alternately along the first direction at predetermined intervals. The first heat sources and the second heat sources are staggered along the first direction, and the first heat sources and adjacent second heat sources are staggered along the first direction. The number of first pipes and second pipes is the same. By setting the number of first and second heat sources in the heat source group, setting the distance between each pair of first heat sources perpendicular to the first direction, and setting the specific position of the second heat source relative to adjacent first heat sources, the windward area of ​​the heat source group can be significantly increased. Furthermore, the mass flow rate of the heat exchange medium flowing around the first and second heat sources can be made substantially equal, thereby improving the heat exchange efficiency of the heat source group.

This invention relates to a multi-impeller-driven horizontal axis micro-wind generator, mainly comprising a novel multi-impeller-driven power generation device and a protective wind-guiding casing. Impeller groups I and II within a barrel-shaped duct form a wind-gathering drive, resulting in better wind capture and a higher generator power output. The generator rotor rotates in the forward direction while the stator windings rotate in the opposite direction, increasing the generator speed without sacrificing torque or adding a transmission. This significantly improves generator efficiency and effective power generation time under light wind conditions. The ventilation and protective cover prevents the high-speed rotating impeller from injuring birds and insects, making it more environmentally friendly. Under low-elevation installation conditions, the ventilation and protective cover isolates floating foreign objects, preventing damage to the impeller and further improving the service life and economic efficiency of the micro-wind generator. It also more effectively reduces emissions of greenhouse gases such as carbon dioxide, contributing to environmental protection and sustainable development.