会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明专利
    • CONTROLLER FOR PROPULSION ENGINE FOR AIRCRAFT
    • JPH08324496A
    • 1996-12-10
    • JP13196995
    • 1995-05-30
    • TOYOTA MOTOR CORP
    • TANAKA SHIGEKI
    • B64C11/40B64C11/34F02D9/02F02D29/02
    • PURPOSE: To optimize engine output characteristics in relation to the propeller rotational number by non-linearly changing at least one of the set rotational number and the set throttle opening in relation to the lever operating amount in a governor means for controlling the propeller rotational number to the set rotational number through a process of changing the pitch of a variable pitch propeller. CONSTITUTION: In a constant speed variable pitch propeller 9 connected to an output shaft of a propulsion engine for an aircraft, composed of a multiple- cylinder four cycle reciprocating engine, the propeller pitch is controlled by a propeller governor 31. In this case, a power lever 40 for simultaneously adjusting the set rotational number of the propeller governor 31 and the opening of a throttle valve 3 is provided, and the ends of the power lever 40 are respectively connected to a rotational number setting mechanism 37 of the governor 31 and an opening setting cam 35 of the throttle valve 3 through cables 37a, 35a. The opening setting cam 35 is taken as a non-linear cam, and the opening of the throttle valve 3 is changed by the non-linear cam 35 into a non-linear shape in relation to the operating amount of the power lever 40.
    • 4. 发明专利
    • HELICOPTER TOOL
    • JPH037190A
    • 1991-01-14
    • JP14347789
    • 1989-06-06
    • WAIRUDO GIYAA KK
    • OSAWA KENICHIKISHI TAKESHI
    • A63H27/127A63H27/133B64C11/34
    • PURPOSE:To have stable fall after however high a helicopter toy has risen, by introducing a plus pitch to put afloat the angle of incidence of each rotary wing when power is transmitted from a drive motive, and altering to a minus pitch for sinking the angle of incidence when power supply is shut. CONSTITUTION:An angle-of-incidence changing means 4 is arranged on the power part 2 of a flying body 1, and for ex. three rotary wings 3 are borne by this changing means 4 rotatably and with possibility of changing the pitch. When the flying body 1 is rising, power is transmitted from a drive motive, and a buoyancy is generated by introducing a plus pitch for putting afloat the angle of incidence of the rotary wings 3 by the mentioned angle-of-incidence changing means 4. When the power from the drive motive goes out, power transmission is disengaged, and the changing means 4 changes the angle of incidence to a minus pitch for falling. The rotary wings 1 rotate with a torque due to inertia, and the flying body moves in the sinking direction, and a torque in the rising direction is added due to the stream of the air, and thus rotation continue even when the inertia force goes out.
    • 9. 发明专利
    • PROPELLER CHANGING PITCH ANGLE BY RELATIVE WIND
    • JPH0656092A
    • 1994-03-01
    • JP23510492
    • 1992-08-12
    • OGURI YOSHIYUKI
    • OGURI YOSHIYUKI
    • B64C11/34F04D29/36
    • PURPOSE:To display maximum propulsive efficiency by providing a wind direction wing part, by which moment around a supporting shaft is generated by changing a relative wind direction, in the point end of a blade, and rotatably mounting the blade to the supporting shaft, so as to hold an attack angle toward relative wind always to the best fixed value. CONSTITUTION:A blade (b) having a wind direction wing part 4 in the point end is rotatably mounted to a strut 9, fixed to a hub 7 provided in a rotary main shaft 6, raceably of center shaft type through an internal bearing of the blade (b). A strong camber is provided in a chord C in the vicinity of 2/3R a blade main unit rotational radius R, and in the case of generating moment of tending to be in a negative pitch about aerodynamic centers A, C in a blade main unit 1, a reverse camber or counter rotating camber is given to the wind direction wing part 4 to form a total surface blade angle 0 deg. in a condition of negating moment. A series of a sweepback angle point part 2 of the blade main unit 1 and its rearward extension wing part 3 is changed into the wind direcion wing part 4 of total surface blade angle 0 deg. by interposing a step differenced angular surface 8 of burying a blade angle beta of the blade main unit 1.