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    • 3. 发明授权
    • Helicopter blade aerofoil
    • 直升机叶片机翼
    • US06164918A
    • 2000-12-26
    • US176954
    • 1998-10-22
    • Makoto AokiHiroki NishimuraEiichi Yamakawa
    • Makoto AokiHiroki NishimuraEiichi Yamakawa
    • B64C27/46B64C27/467B63H1/26
    • B64C27/467Y10S416/02
    • Upper and lower surfaces of an aerofoil are defined by the following coordinates given in the table below, and the configuration of a leading edge of the aerofoil is defined by the following leading edge radius and the center of circle. Thus drag divergence Mach number Mdd and maximum lift coefficient Clmax can be increased and the noise level can be reduced.______________________________________ X/C Yup/C Ylow/C ______________________________________ 0.00000 -0.00323 -0.00323 0.00100 0.00155 -0.00758 0.00250 0.00418 -0.00925 0.00500 0.00782 -0.01062 0.00750 0.01060 -0.01155 0.01000 0.01312 -0.01213 0.01750 0.01912 -0.01316 0.02500 0.02381 -0.01388 0.05000 0.03437 -0.01561 0.75000 0.04070 -0.01707 0.10000 0.04466 -0.01852 0.15000 0.04893 -0.02100 0.20000 0.05083 -0.02312 0.25000 0.05150 -0.02506 0.30000 0.05149 -0.02663 0.35000 0.05105 -0.02775 0.40000 0.05016 -0.02835 0.45000 0.04875 -0.02839 0.50000 0.04663 -0.02767 0.55000 0.04359 -0.02618 0.60000 0.03974 -0.02407 0.65000 0.03515 -0.02146 0.70000 0.03000 -0.01847 0.75000 0.02451 -0.01523 0.80000 0.01892 -0.01187 0.85000 0.01347 -0.00851 0.90000 0.00836 -0.00529 0.95000 0.00381 -0.00233 1.00000 0.00207 -0.00079 ______________________________________ Leading edge radius r/C=0.01073 Center of circle X/C=0.01072, Y/C=-0.00373
    • 机翼的上表面和下表面由下表中给出的以下坐标定义,机翼前缘的结构由以下前缘半径和圆心定义。 因此,可以增加拖曳发散马赫数Mdd和最大提升系数Clmax,并且可以降低噪声水平。 - X / C Yup / C Ylow / C - 0.00000 -0.00323 -0.00323 - 0.00100 0.00155 -0.00758 - 0.00250 0.00418 -0.00925 - 0.00500 0.00782 -0.01062 - 0.00750 0.01060 -0.01155 - 0.01000 0.01312 -0.01213 - 0.01750 0.01912 -0.01316 - 0.02500 0.02381 - 0.01388 -0.05000 0.03437 -0.01561-0.75000 0.04070 -0.01707 -0.10000 0.04466 -0.01852-0.15000 0.04893 -0.02100 -0.20000 0.05083 -0.02312 -0.25000 0.05150 -0.02506-0.30000 0.05149 -0.02663-0.35000 0.05105 -0.02775-0.40000 0.05016 -0.02835-0.45000 0.04875 - 0.02839-0.50000 0.04663 -0.02767-0.55000 0.04359 -0.02618-0.60000 0.03974 -0.02407-0.65000 0.03515 -0.02146-0.70000 0.03000 -0.01847-0.75000 0.02451 -0.01523-0.80000 0.01892 -0.01187-0.85000 0.01347 -0.00851-0.90000 0.00836 -0.00529-0.95000 0.00381 - 0.00233 - 1.00000 0.00207 -0.00079 - 前缘半径r / C = 0.01073圆心X / C = 0.01072,Y / C = -0.00373
    • 5. 发明授权
    • helicopter blade aerofoil
    • 直升机叶片机翼
    • US5957662A
    • 1999-09-28
    • US945300
    • 1997-10-17
    • Makoto AokiHiroki NishimuraEiichi Yamakawa
    • Makoto AokiHiroki NishimuraEiichi Yamakawa
    • B64C27/46B64C3/14B64C27/467
    • B64C27/467B64C3/14Y10S416/02Y10S416/05
    • In a helicopter blade aerofoil, upper and lower surfaces thereof are defined by the following coordinates, and the leading edge profile of the aerofoil is defined by the following leading edge radius and center of circle. Thus drag divergence Mach number Mdd and maximum lift coefficient Clmax can be increased and the level of noise can be reduced.______________________________________X/C Yup/C Ylow/C______________________________________0.00000 0.00000 0.000000.00250 0.00781 -0.005580.00500 0.01131 -0.007650.00750 0.01423 -0.008740.01000 0.01660 -0.009640.01750 0.02224 -0.011560.02500 0.02658 -0.012760.50000 0.03585 -0.015680.07500 0.04128 -0.017580.10000 0.04480 -0.019010.15000 0.04893 -0.021130.20000 0.05095 -0.023060.25000 0.05181 -0.024920.30000 0.05200 -0.026470.35000 0.05179 -0.027600.40000 0.05129 -0.028210.45000 0.05038 -0.028270.50000 0.04888 -0.027750.55000 0.04673 -0.026620.60000 0.04393 -0.024910.65000 0.04037 -0.022680.70000 0.03592 -0.019960.75000 0.03052 -0.016820.80000 0.02430 -0.013370.85000 0.01751 -0.009740.90000 0.01046 -0.005970.95000 0.00407 -0.002361.00000 0.00207 -0.00079______________________________________ Leading edge radius r/C = 0.00844, Center of circle X/C = 0.00842, Y/C = 0.00064,
    • PCT No.PCT / JP97 / 00674 Sec。 371日期1997年10月17日第 102(e)1997年10月17日PCT 1997年3月5日PCT公布。 公开号WO97 / 32780 PCT 日期1997年9月12日在直升机叶片机翼中,其上表面和下表面由以下坐标限定,机翼的前缘轮廓由以下前缘半径和圆心定义。 因此,可以增加拖曳发散马赫数Mdd和最大提升系数Clmax,并且可以降低噪声水平。 - X / C Yup / C Ylow / C - 0.00000 0.00000 0.00000 - 0.00250 0.00781 -0.00558 - 0.00500 0.01131 -0.00765 - 0.00750 0.01423 -0.00874 - 0.01000 0.01660 -0.00964 - 0.01750 0.02224 -0.01156 - 0.02500 0.02658 -0.01276 - 0.50000 0.03585 -0.01568 - 0.07500 0.04128 -0.01758 -0.10000 0.04480 -0.01901-0.15000 0.04893 -0.02113 -0.20000 0.05095 -0.02306 -0.25000 0.05181 -0.02492-0.30000 0.05200 -0.02647 -0.35000 0.05179 -0.02760-0.40000 0.05129 -0.02821-0.45000 0.05038 -0.02827-0.50000 0.04888 -0.02775 - 0.55000 0.04673 -0.02662 - 0.60000 0.04393 -0.02491 - 0.65000 0.04037 -0.02268 - 0.70000 0.03592 -0.01996 - 0.75000 0.03052 -0.01682 - 0.80000 0.02430 -0.01337 - 0.85000 0.01751 -0.00974 - 0.90000 0.01046 -0.00597 - 0.95000 0.00407 -0.00236 - 1.00000 0.00207 -0.00079 - 前缘半径r / C = 0.00844, - 圆心X / C = 0.00842,Y / C = 0.00064, -
    • 6. 发明授权
    • Low-noise level landing apparatus and system for helicopters
    • 用于直升机的低噪声平台着陆装置和系统
    • US06198991B1
    • 2001-03-06
    • US09250276
    • 1999-02-16
    • Eiichi YamakawaNatsuki KondoHiroki Nishimura
    • Eiichi YamakawaNatsuki KondoHiroki Nishimura
    • D05D100
    • G08G5/025G05D1/0676G05D1/0858
    • A low-noise level landing apparatus for helicopters comprises a helicopter position calculator for calculating the position of the helicopter, a data input device, an air data sensor for measuring an airspeed and a descending angle, a rotor tachometer for detecting a rotor rotational speed, a memory and a fuel gauge for calculating the weight of the helicopter, a rotor rotational speed controller for controlling the rotor rotational speed, a BVI noise generating area database device for storing noise levels in accordance with parameters of descending speed, airspeed, descending angle, rotor rotational speed and weight of the helicopter. A computer selects a flight route, an airspeed, a descending angle and a rotor rotational speed wherein noise is reduced, by setting a plurality of flight routes on the basis of the helicopter position and landing point and by referring to the noise generating area database device. Low-noise level landing is then carried out by pilot manual control or automatic flight control. By modifying the selected flight route on the basis of ground noise data received by a data receiver, the optimal flight route is reselected. As a result, a flight route wherein noise reduction can be attained during landing can be selected more properly.
    • 用于直升机的低噪声级着陆装置包括用于计算直升机位置的直升机位置计算器,数据输入装置,用于测量空速和下降角的空气数据传感器,用于检测转子转速的转子转速计, 用于计算直升机重量的存储器和燃料计,用于控制转子转速的转子转速控制器,用于根据下降速度,空速,下降角等参数存储噪声水平的BVI噪声产生区域数据库装置, 转子转速和直升机的重量。 计算机通过基于直升机位置和着陆点设置多个飞行路线并通过参考噪声产生区域数据库设备来选择飞行路线,空速,下降角度和转子旋转速度,其中噪声降低 。 然后通过飞行员手动控制或自动飞行控制进行低噪声级别着陆。 通过根据数据接收机接收到的地面噪声数据修改所选择的飞行路线,重新选择最佳飞行路线。 结果,可以更适当地选择在着陆期间可以获得降噪的飞行路线。
    • 8. 发明授权
    • Converter circuit of battery charger for electric vehicle
    • 电动汽车充电器转换电路
    • US5940280A
    • 1999-08-17
    • US56726
    • 1998-04-08
    • Yasumasa MuraiHiroki NishimuraKatsunori Sugimori
    • Yasumasa MuraiHiroki NishimuraKatsunori Sugimori
    • H02J7/00H02J7/02H02M1/42H02M3/335H02M3/337H02M5/00H02M7/12H02M7/21
    • H02M1/4208H02J7/022H02M3/337Y02B40/90Y02B70/126Y02T90/127
    • A battery charger converter circuit is disclosed in which a half-bridge rectifier circuit formed from two diodes, a half-bridge circuit formed from two switching elements, and a series circuit formed from two capacitors are connected at either end, respectively, thereof in parallel to each other, a boosting reactor being provided at the AC side of the half-bridge rectifier circuit; a primary circuit of the converter, including a primary coil of a high-frequency transformer, connected between a common point of connection between the switching elements and a common point of connection between the two capacitors, and a control circuit for the two switching elements; and a secondary circuit of the converter, including the secondary coil of the high-frequency transformer, a full-bridge rectifier circuit connected in parallel to the secondary coil and a smoothing capacitor; a high-frequency power generated by the primary circuit of the converter being rectified by the secondary circuit and charged into cells.
    • 公开了一种电池充电器转换器电路,其中由两个二极管形成的半桥整流电路,由两个开关元件形成的半桥电路和由两个电容器形成的串联电路分别在其两端分别连接 在半桥式整流电路的AC侧设置有升压电抗器, 所述转换器的初级电路包括连接在所述开关元件之间的公共连接点与所述两个电容器之间的公共连接点之间的高频变压器的初级线圈,以及用于所述两个开关元件的控制电路; 以及包括高频变压器的次级线圈的转换器的次级电路,与次级线圈并联连接的全桥整流电路和平滑电容器; 由转换器的主电路产生的高频功率由次级电路整流并被充电到电池中。