公开(公告)号：US20070132461A1

公开(公告)日：2007-06-14

申请号：US11302923

申请日：2005-12-14

Applicant: Eric Holmquist ,  Peter Jalbert ,  Richard Versailles

Inventor： Eric Holmquist ,  Peter Jalbert ,  Richard Versailles

IPC: G01R27/04

CPC classification number: F01D17/02 ,  F01D21/003 ,  F05D2260/80 ,  G01H1/006

Abstract: A rotor blade measurement system includes a microwave source and a probe. A directional coupler is attached to the source and the probe. A detector is attached to the directional coupler. The probe directs a microwave signal toward a rotor such that during rotation the rotor blade will pass through the path of the microwave signal. As the rotor blade passes the microwave signal is reflected back to the probe. The directional coupler separates the original microwave signal and the reflected signal. The detector then determines the energy level of the reflected signal. As each rotor blade passes the microwave signal it generates a reflected signal that can be analyzed over time. From the length and shape of the waveform of the reflected signal the amount of twisting and flutter in a rotor blade can be determined.

Abstract translation: 转子叶片测量系统包括微波源和探头。 定向耦合器连接到源和探头。 检测器连接到定向耦合器。 探针将微波信号引导到转子，使得在旋转期间，转子叶片将通过微波信号的路径。 当转子叶片通过时，微波信号被反射回探头。 定向耦合器分离原始微波信号和反射信号。 然后，检测器确定反射信号的能级。 当每个转子叶片通过微波信号时，它产生可随时间分析的反射信号。 根据反射信号的波形的长度和形状，可以确定转子叶片中的扭转和颤动量。

公开(公告)号：US20050126279A1

公开(公告)日：2005-06-16

申请号：US10732595

申请日：2003-12-10

Applicant: Rajindar Kaushik ,  James Haesche ,  Richard Versailles

Inventor： Rajindar Kaushik ,  James Haesche ,  Richard Versailles

IPC: G01C21/00 ,  G01P5/16 ,  G01P13/02

CPC classification number: G01P5/16 ,  G01P13/02 ,  G01P13/025

Abstract: A Rotary Air-data System (RADS) periodically samples pressure data from a main rotor blade mounted pitot-scoop integrated with a high accuracy pressure sensor to compute a velocity vector that is resolvable into the aircraft's coordinate system. Mathematical techniques are employed which provide accurate computations of static pressure without a static pressure sensor. The RADS also computes the direction of the relative wind which is particularly useful when the pilot executes hover or low speed, low altitude maneuvers in restricted visibility. The availability of relative wind velocity information coupled with navigation data enhances the ability of rotary aircraft to perform accurate low altitude hover, fire control and other autopilot maneuvers.

Abstract translation: 旋转空气数据系统（RADS）定期从与高精度压力传感器集成的主转子叶片安装的托管铲斗上采集压力数据，以计算可分解成飞机坐标系的速度矢量。 使用数学技术，其提供静压力的精确计算，而没有静态压力传感器。 RADS还计算相对风的方向，当飞行员在可见度受限时执行悬停或低速，低空作战时特别有用。 与导航数据相结合的相对风速信息的可用性增强了旋转飞机执行准确的低空悬停，火控和其他自动驾驶机动的能力。