-
公开(公告)号：US09188105B2
公开(公告)日：2015-11-17
申请号：US13089754
申请日：2011-04-19
CPC分类号： B64D41/007 , F03D9/00 , F05D2220/34 , F16C3/023 , Y02E10/72 , Y10T29/4932 , Y10T29/49826
摘要： A driveshaft for an aircraft ram air turbine includes a substantially cylindrical elongate portion, a first end extending from the elongate portion, and a second end extending from the elongate portion opposite the first end. The first and second ends each include a substantially frusto-conical section having a curved generatrix, such that distal portions of each of the first and second ends have smaller outer diameters than an outer diameter of the elongate portion. The elongate portion provides relatively high lateral stiffness and the first and second ends provide relatively low torsional stiffness, such that the driveshaft has a lateral natural frequency higher than an operating range of the driveshaft and has a torsional natural frequency below the operating range of the driveshaft.
摘要翻译： 用于飞行器冲压空气涡轮机的驱动轴包括基本上圆柱形的细长部分，从细长部分延伸的第一端部以及从第一端部延伸的细长部分延伸的第二端部。 第一和第二端各自包括具有弯曲母线的基本截头圆锥形部分，使得第一和第二端中的每一个的远端部分具有比细长部分的外径更小的外径。 细长部分提供相对较高的横向刚度，并且第一和第二端提供相对较低的扭转刚度，使得驱动轴具有高于驱动轴的操作范围的横向固有频率，并且具有低于驱动轴的操作范围的扭转固有频率 。
-
公开(公告)号：US20120128495A1
公开(公告)日：2012-05-24
申请号：US12949178
申请日：2010-11-18
CPC分类号： F02C7/36 , B64D41/007 , F02C7/32 , F05D2220/34 , F16C25/083 , F16C2326/43 , Y02T50/44 , Y02T50/671 , Y10T29/49316 , Y10T74/19
摘要： A ram air turbine assembly includes a spacer that controls axial movement of a bearing assembly supporting rotation of a driven shaft to limit compression of a bearing biasing member. A gearbox includes mating gears that transfer power through a strut to a generator. Bearings support rotation of the driven shaft and the biasing member generates a biasing load to maintain desired alignment between the mating gears. Axial thrust reversals generated during operation are prevented from fully compressing the biasing member by a spacer that defines a minimum compressed height and that further limits axial movement of the bearing assembly responsive to the thrust reversals of the driven shaft.
摘要翻译： 冲压空气涡轮机组件包括一个间隔件，该间隔件控制支撑从动轴的旋转的轴承组件的轴向运动，以限制轴承偏置构件的压缩。 齿轮箱包括通过支柱将动力传递到发电机的配合齿轮。 轴承支撑从动轴的旋转，并且偏压构件产生偏置负载以保持配合齿轮之间期望的对准。 防止在操作期间产生的轴向推力反转通过限定最小压缩高度的间隔件来完全压缩偏置构件，并且进一步限制轴承组件的响应于从动轴的推力反转的轴向运动。
-
公开(公告)号：US08622697B2
公开(公告)日：2014-01-07
申请号：US12949178
申请日：2010-11-18
IPC分类号： B64C27/54
CPC分类号： F02C7/36 , B64D41/007 , F02C7/32 , F05D2220/34 , F16C25/083 , F16C2326/43 , Y02T50/44 , Y02T50/671 , Y10T29/49316 , Y10T74/19
摘要： A ram air turbine assembly includes a spacer that controls axial movement of a bearing assembly supporting rotation of a driven shaft to limit compression of a bearing biasing member. A gearbox includes mating gears that transfer power through a strut to a generator. Bearings support rotation of the driven shaft and the biasing member generates a biasing load to maintain desired alignment between the mating gears. Axial thrust reversals generated during operation are prevented from fully compressing the biasing member by a spacer that defines a minimum compressed height and that further limits axial movement of the bearing assembly responsive to the thrust reversals of the driven shaft.
摘要翻译： 冲压空气涡轮机组件包括一个间隔件，该间隔件控制支撑从动轴的旋转的轴承组件的轴向运动，以限制轴承偏置构件的压缩。 齿轮箱包括通过支柱将动力传递到发电机的配合齿轮。 轴承支撑从动轴的旋转，并且偏压构件产生偏置负载以保持配合齿轮之间期望的对准。 防止在操作期间产生的轴向推力反转通过限定最小压缩高度的间隔件来完全压缩偏置构件，并且进一步限制轴承组件的响应于从动轴的推力反转的轴向运动。
-
公开(公告)号：US20120269634A1
公开(公告)日：2012-10-25
申请号：US13089754
申请日：2011-04-19
CPC分类号： B64D41/007 , F03D9/00 , F05D2220/34 , F16C3/023 , Y02E10/72 , Y10T29/4932 , Y10T29/49826
摘要： A driveshaft for an aircraft ram air turbine includes a substantially cylindrical elongate portion, a first end extending from the elongate portion, and a second end extending from the elongate portion opposite the first end. The first and second ends each include a substantially frusto-conical section having a curved generatrix, such that distal portions of each of the first and second ends have smaller outer diameters than an outer diameter of the elongate portion. The elongate portion provides relatively high lateral stiffness and the first and second ends provide relatively low torsional stiffness, such that the driveshaft has a lateral natural frequency higher than an operating range of the driveshaft and has a torsional natural frequency below the operating range of the driveshaft.
摘要翻译： 用于飞行器冲压空气涡轮机的驱动轴包括基本上圆柱形的细长部分，从细长部分延伸的第一端部以及从第一端部延伸的细长部分延伸的第二端部。 第一和第二端各自包括具有弯曲母线的基本截头圆锥形部分，使得第一和第二端中的每一个的远端部分具有比细长部分的外径更小的外径。 细长部分提供相对较高的横向刚度，并且第一和第二端提供相对较低的扭转刚度，使得驱动轴具有高于驱动轴的操作范围的横向固有频率，并且具有低于驱动轴的操作范围的扭转固有频率 。
-
公开(公告)号：US20120183402A1
公开(公告)日：2012-07-19
申请号：US13008203
申请日：2011-01-18
CPC分类号： F03D15/10 , B64D41/007 , F03D9/00 , F03D9/28 , F03D9/32 , F03D15/00 , F03D80/70 , F05B2220/50 , F05B2240/50 , F05B2240/923 , F05B2260/503 , F05B2260/5032 , F05D2260/4031 , F16H1/14 , F16H55/0846 , Y02E10/722 , Y10T29/49229 , Y10T74/19665
摘要： A ram air turbine (RAT) assembly includes a gearbox that supports a gear set with a ring gear that drives a pinion gear. The gear set provides for the transmission of power from the turbine to a generator, pump or other power conversion device. A turbine shaft supports the ring gear and a pinion shaft that rotates about an axis transverse to the turbine shaft supports the pinion gear. A ratio between a face width and a diametrical pitch of the gear set is within a desired ratio that provides sufficient space for supporting bearing assemblies while provide for operation within the physical constraints and desired performance requirements of the RAT.
摘要翻译： 冲压空气涡轮机（RAT）组件包括齿轮箱，其支撑具有驱动小齿轮的齿圈的齿轮组。 齿轮组提供从涡轮机到发电机，泵或其它电力转换装置的动力传输。 涡轮轴支撑环形齿轮，并且小齿轮轴围绕横向于涡轮轴的轴线旋转，支撑小齿轮。 齿轮组的面宽度和直径间距之间的比率在所需的比率内，其提供足够的空间用于支撑轴承组件，同时提供在物理约束和RAT的期望性能要求下的操作。
-
公开(公告)号：US20120011953A1
公开(公告)日：2012-01-19
申请号：US12837937
申请日：2010-07-16
CPC分类号： B64D41/007 , F16C33/585 , F16C2240/46 , F16C2240/70 , F16C2240/76 , F16C2326/43 , F16H57/021 , Y10T29/53104 , Y10T74/19642
摘要： A ram air turbine gearbox includes a pinion shaft arranged in a housing and operatively supports a pinion gear. An input shaft is arranged in the housing and operatively supports a ring gear coupled to the pinion gear. The input and output shafts are oriented at an angle. A rolling element bearing supports the pinion shaft in the housing and includes inner and outer races between which a multiple ball bearings are arranged. Each ball includes a ball diameter. The inner and outer races respectively include inner and outer raceway radii and inner and outer raceway depths. The inner and outer raceway radii each are approximately 52% of the ball diameter. The inner raceway depth is at a minimum 25% of the ball diameter, and the outer raceway depth is at a minimum 20% of the ball diameter.
摘要翻译： 压头空气涡轮机齿轮箱包括布置在壳体中并可操作地支撑小齿轮的小齿轮轴。 输入轴布置在壳体中并且可操作地支撑联接到小齿轮的环形齿轮。 输入和输出轴以一定角度定向。 滚动元件轴承支撑壳体中的小齿轮轴并且包括内圈和外圈，多个滚珠轴承之间布置有多个滚珠轴承。 每个球包括球直径。 内圈和外圈分别包括内圈和外滚道半径以及内外滚道深度。 内径和外滚道半径各约为球直径的52％。 内滚道深度至少为球直径的25％，外滚道深度至少为球直径的20％。
-
公开(公告)号：US09726149B2
公开(公告)日：2017-08-08
申请号：US13008203
申请日：2011-01-18
CPC分类号： F03D15/10 , B64D41/007 , F03D9/00 , F03D9/28 , F03D9/32 , F03D15/00 , F03D80/70 , F05B2220/50 , F05B2240/50 , F05B2240/923 , F05B2260/503 , F05B2260/5032 , F05D2260/4031 , F16H1/14 , F16H55/0846 , Y02E10/722 , Y10T29/49229 , Y10T74/19665
摘要： A ram air turbine (RAT) assembly includes a gearbox that supports a gear set with a ring gear that drives a pinion gear. The gear set provides for the transmission of power from the turbine to a generator, pump or other power conversion device. A turbine shaft supports the ring gear and a pinion shaft that rotates about an axis transverse to the turbine shaft supports the pinion gear. A ratio between a face width and a diametrical pitch of the gear set is within a desired ratio that provides sufficient space for supporting bearing assemblies while providing for operation within the physical constraints and desired performance requirements of the RAT.
-
公开(公告)号：US20120269616A1
公开(公告)日：2012-10-25
申请号：US13089792
申请日：2011-04-19
CPC分类号： F02C7/32 , F16C3/02 , F16C2326/06 , Y10T29/4932
摘要： A driveshaft for an aircraft ram air turbine includes a tubular body and a flange. The tubular body defines an axis of rotation and includes a forward portion and a frusto-conical portion located rearward of the forward portion. The flange adjoins the forward portion of the tubular body opposite the frusto-conical portion, and has a forward face and an opposite rear face. A ratio of an outer diameter of the forward portion of the tubular body to an inner diameter of the forward portion of the tubular body is in a range of approximately 1.423 to 1.425.
摘要翻译： 用于飞行器冲压空气涡轮机的驱动轴包括管状主体和凸缘。 管状体限定旋转轴线，并且包括位于前部的后方的前部和截头圆锥形部分。 凸缘与管状体的与截头圆锥形部分相对的前部相邻，并且具有前表面和相对的后表面。 管状体的前部的外径与管状体的前部的内径的比率在约1.423〜1.425的范围内。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.012 秒)
