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公开(公告)号：US5265475A
公开(公告)日：1993-11-30
申请号：US880383
申请日：1992-05-08
CPC分类号： G01M11/083
摘要： The invention is a failure detecting system including fiber optic cables of different lengths disposed in the vicinity of a secured region between two or more adherends, and an electro-optical analysis circuit for analyzing signals detected by the fiber optic cables. The fiber optic cables extend transversely across the connected adherends, with each cable extending a different length so that the width of the structure is divided into discrete regions. In this way, the measurable strain can be integrated over the entire length of the fiber where the fiber remains bonded to the material. The cables are coupled to laser circuitry, detector circuitry and network analyzer circuitry, and signals from the cables are processed in the network analyzer circuitry using a Fast Fourier Transform to reduce complex frequency information to time domain representation of reflection pulses. Thereafter, they are compared with reference signals to indicate the presence and degree of disbond. Upon determination that a predetermined threshold parameter has been attained or exceeded, the system can be designed to activate an alarm as well as any corrective equipment or process. The system can be embodied as a static failure detecting system, or as a real-time system capable of generating and maintaining an updatable library of reference signals.
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公开(公告)号：US07464900B2
公开(公告)日：2008-12-16
申请号：US10970472
申请日：2004-10-20
申请人： Paul R. Clark , Ross H. Messinger
发明人： Paul R. Clark , Ross H. Messinger
摘要： A folding, retractable dome for protecting a feature, such as a docking mechanism, a hatch or other equipment at an exterior surface of a space vehicle, includes a plurality of arcuate ribs, each having opposite ends respectively pinioned at opposite sides of the feature at the surface of the vehicle for rotational movement about an axis of rotation extending through the opposite ends and through an arcuate path of revolution extending over the feature, and a flexible cover attached to each of the ribs such that, in a deployed configuration of the dome, in which adjacent ribs are rotated apart from each other at a maximum relative angle therebetween, the cover is stretched generally tangentially between the adjacent ribs to form a generally arcuate shield over the feature, and in a retracted position of the dome, in which adjacent ribs are rotated together at a minimum relative angle therebetween, the cover is collapsed to define folded pleats between the adjacent ribs.
摘要翻译： 用于保护空间车辆外表面处的特征（例如对接机构，舱口或其他设备）的折叠式伸缩式圆顶包括多个弧形肋，每个弧形肋具有分别在该特征的相对侧处的相对端 所述车辆的表面围绕旋转轴线旋转延伸，所述旋转轴线延伸穿过所述相对端并且穿过所述特征部分延伸的弧形路径，以及附接到每个所述肋部的柔性盖，使得在所述圆顶的展开构造中 ，其中相邻的肋以其最大相对角度彼此分开地旋转，所述盖大致相切地在相邻的肋之间被拉伸，以在所述特征上形成大致弧形的屏蔽，并且在所述圆顶的缩回位置中相邻 肋骨之间以最小相对角度一起旋转，盖子被折叠以在相邻的肋条之间限定折叠褶皱。
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公开(公告)号：US07464548B2
公开(公告)日：2008-12-16
申请号：US11290364
申请日：2005-11-30
摘要： Linear actuators including coupled elongate members formed of shape memory alloys are provided. Members that lengthen when heated are coupled to members that shorten when heated such that stroke amplification gains are derived from each member. The members may be tubular and may be coaxially arranged for telescopic extension and collapse. Sections of a modular structure such as a space vehicle may be latched and clamped together for assembly or for docking by utilizing linear actuators having shape memory alloys that are actuated thermally.
摘要翻译： 提供包括由形状记忆合金形成的耦合细长构件的线性致动器。 加热时延长的构件与加热时缩短的构件偶联，使得每个构件产生中风放大增益。 构件可以是管状的并且可以同轴布置用于伸缩伸展和塌缩。 诸如空间车辆的模块化结构的部分可以通过利用具有被热致动的形状记忆合金的线性致动器来锁定和夹紧在一起用于组装或对接。
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公开(公告)号：US6042055A
公开(公告)日：2000-03-28
申请号：US994798
申请日：1997-12-19
申请人： Ross H. Messinger
发明人： Ross H. Messinger
CPC分类号： B64C3/185 , B64C1/38 , B64D37/06 , B64D37/30 , B64C2001/0072 , Y02T50/433 , Y02T50/44 , Y10T403/21
摘要： A thermal expansion joint having a plurality of bendable tabs which flex to minimize the stress caused by thermal expansion. The tabs flex at their slot radii by the base of the tabs, allowing the tip of the tabs to move. Apertures in the tabs near the tip connect the tabs to a solid body or to tabs on another body. The tabs' flexing relieves stress in the body undergoing thermal expansion at the point it is connected to a body which has a different thermal expansion rate and/or experiences a different temperature. A plurality of tabs so connecting two bodies provides a stiff joint and reduces the thickness of the material otherwise needed to provide a connection what will not crack or otherwise break due to thermal strains at the connection between two bodies.
摘要翻译： 一种热膨胀接头，其具有多个可弯曲的接头，其弯曲以使由热膨胀引起的应力最小化。 突出部分在突出部的基部处以其槽半径弯曲，允许突出部的尖端移动。 靠近尖端的接头中的孔径将突片连接到固体或者在另一个身体上的突出部。 翼片的弯曲减轻了身体中经受热膨胀的应力，该应力连接到具有不同热膨胀率和/或经历不同温度的主体。 连接两个主体的多个突片提供了一个刚性关节，并减小了材料的厚度，否则需要提供连接，由于两个主体之间的连接处的热应变，不会破裂或以其他方式破裂。
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