RETROFIT WINGLETS FOR WIND TURBINES
    14.
    发明申请

    公开(公告)号:US20190145375A1

    公开(公告)日:2019-05-16

    申请号:US16186876

    申请日:2018-11-12

    IPC分类号: F03D1/06

    摘要: A winglet is provided for retrofitting to a wind turbine. Aerodynamic and centrifugal forces for winglets having a range of configurations including winglet height, taper ratio, twist, and cant angle are modeled, wherein the winglet height, taper ratio, twist, and cant angle are used to define a grid in a Vector Lattice. An increase in a coefficient of power Cp of each winglet design when applied to a predetermined main blade of the wind turbine can be determined. A winglet configuration can then be selected wherein the coefficient of power Cp of the main blade and winglet is at least 2% greater than the coefficient of power Cp of the main blade alone, and wherein a ratio of normal aerodynamic force generated by the winglet to centrifugal force generated by the winglet during rotation at a nominal rated speed is in a range between 0.75 and 2.

    BEACON-BASED INDOOR WAYFINDING SYSTEM WITH AUTOMATED BEACON PLACEMENT

    公开(公告)号:US20190072395A1

    公开(公告)日:2019-03-07

    申请号:US16123659

    申请日:2018-09-06

    摘要: An automated process designs an indoor wayfinding system using wireless beacons interacting with a mobile smartphone to guide a user to a destination. Image processing and computational geometric techniques extracting necessary information about an indoor space to determine beacon placement and support path computations for navigation. An architectural floor plan of the indoor space of interest is scanned to extract all the points of interest (doors, stairs, elevators, etc.), to identify walking paths within this space, and to create a connectivity graph representation of the space upon which path computations for navigation can be performed. Optimized locations where beacons should be placed on the indoor floor plan are identified very quickly and with minimal effort.