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    • 8. 发明授权
    • Determination of runway landing conditions
    • 确定跑道着陆条件
    • US07586422B2
    • 2009-09-08
    • US11461880
    • 2006-08-02
    • William L. GoodmanThomas ImrichSyed T. Shafaat
    • William L. GoodmanThomas ImrichSyed T. Shafaat
    • G08B21/00
    • B60T8/1703B60T8/172B64C25/426G08G5/0091G08G5/025
    • The invention discloses differing embodiments of methods, aircraft, and apparatus for determining the landing conditions of a runway. In one embodiment, braking data may be collected from an aircraft which has landed on the runway; a braking performance measurement of the aircraft may be calculated based on the braking data; and a normalized braking performance measurement may be determined based on the braking performance measurement. The invention may be utilized to predict the expected braking performance of various types of aircraft on the runway. The invention may provide landing performance information to a broad host of users, and/or may be used as a basis for the development of a new aviation standard for the reporting of runway braking action.
    • 本发明公开了用于确定跑道着陆条件的方法,飞行器和装置的不同实施例。 在一个实施例中,可以从已经降落在跑道上的飞机收集制动数据; 可以基于制动数据来计算飞行器的制动性能测量; 并且可以基于制动性能测量来确定归一化的制动性能测量。 本发明可以用于预测跑道上各种类型的飞机的预期制动性能。 本发明可以向广泛的用户主体提供着陆性能信息,和/或可以用作开发用于报告跑道制动动作的新的航空标准的基础。
    • 10. 发明授权
    • Focus error detection using an equal path length lateral shearing
interferometer
    • 使用等径长度横向剪切干涉仪进行聚焦误差检测
    • US5446710A
    • 1995-08-29
    • US972578
    • 1992-11-06
    • Timothy S. GardnerRonald P. StahlSyed T. Shafaat
    • Timothy S. GardnerRonald P. StahlSyed T. Shafaat
    • G11B7/09G11B7/00
    • G11B7/0908G11B7/0917
    • This invention provides an equal path length lateral shearing interferometer and its implementation in focus detection devices, particularly for optical data storage devices. The interferometer comprises a beamsplitter and two abutting roof prisms. Shifting the placement of a roof prism along an axis orthogonal to the direction of light propagation and to the peak of the roof creates a lateral shear between the two output beams. Rotation a roof prism about this axis produces a tilt between the two output beams. This creates an interference pattern with a rotational orientation which is a function of the focus of the beam impinging on the optical storage medium. A pattern sensor is provided to adjust the focus of the beam in an accurate and dynamic manner.
    • 本发明提供了一种相等的路径长度横向剪切干涉仪及其在焦点检测装置中的实现,特别是用于光学数据存储装置。 干涉仪包括分束器和两个邻接的屋顶棱镜。 沿着与光传播方向正交的轴线和屋顶的顶部位置移动屋顶棱镜在两个输出光束之间产生横向剪切。 围绕该轴旋转屋顶棱镜在两个输出光束之间产生倾斜。 这产生具有旋转取向的干涉图案,旋转取向是光束入射在光学存储介质上的焦点的函数。 提供图案传感器以精确和动态的方式调整光束的焦点。