公开(公告)号：US20110307125A1

公开(公告)日：2011-12-15

申请号：US13156565

申请日：2011-06-09

申请人： Alain Eberhard

发明人： Alain Eberhard

IPC分类号： B64D45/00 ,  G08B23/00

CPC分类号： G05D19/02

摘要： The present invention relates to a method of monitoring the effectiveness of a damper system, wherein the method consists in measuring the relative movements of two strength members, in filtering the measurements in order to isolate those that relate to the lead-lag resonant frequency of the blade, in rectifying the signal, in recording the signal, in comparing the rectified signal (S) with a threshold value (SL), in determining an initial time interval (T0) as soon as the rectified signal exceeds the threshold value (SL), in calculating the integrals of the signal from T0 to T0+δ and from T0 to T0+pδ, in calculating the ratio R of the integrals, and in comparing the ratio R with a limit value RL, and in activating and delivering an alert signal (V1) if the ratio R is greater than or equal to the limit value RL.

摘要翻译： 本发明涉及一种监测阻尼器系统的有效性的方法，其中该方法包括测量两个强度构件的相对运动，在对该测量进行滤波时，以隔离与这些振幅系统的超前 - 滞后共振频率相关的那些 一旦整流信号超过阈值（SL），在确定初始时间间隔（T0）时，在整流信号中，在将整流信号（S）与阈值（SL）进行比较时，对信号进行整流， 在计算从T0到T0 +δ和从T0到T0 +pδ的信号的积分时，在计算积分的比率R时，以及将比率R与极限值RL进行比较，以及激活和传送警报 信号（V1），如果比率R大于或等于极限值RL。

公开(公告)号：US08532845B2

公开(公告)日：2013-09-10

申请号：US13156565

申请日：2011-06-09

申请人： Alain Eberhard

发明人： Alain Eberhard

IPC分类号： G01M17/00

CPC分类号： G05D19/02

摘要： The present invention relates to a method of monitoring the effectiveness of a damper system, wherein the method consists in measuring the relative movements of two strength members, in filtering the measurements in order to isolate those that relate to the lead-lag resonant frequency of the blade, in rectifying the signal, in recording the signal, in comparing the rectified signal (S) with a threshold value (SL), in determining an initial time interval (T0) as soon as the rectified signal exceeds the threshold value (SL), in calculating the integrals of the signal from T0 to T0+δ and from T0 to T0+pδ, in calculating the ratio R of the integrals, and in comparing the ratio R with a limit value RL, and in activating and delivering an alert signal (V1) if the ratio R is greater than or equal to the limit value RL.

摘要翻译： 本发明涉及一种监测阻尼器系统的有效性的方法，其中该方法包括测量两个强度构件的相对运动，在对该测量进行滤波时，以隔离与这些振幅系统的超前 - 滞后共振频率相关的那些 一旦整流信号超过阈值（SL），在确定初始时间间隔（T0）时，在整流信号中，在将整流信号（S）与阈值（SL）进行比较时，对信号进行整流， 在计算从T0到T0 + delta和T0到T0 + pdelta的信号的积分时，在计算积分的比率R时，以及将比率R与极限值RL进行比较，以及激活和传送警报 信号（V1），如果比率R大于或等于极限值RL。

公开(公告)号：US08622703B2

公开(公告)日：2014-01-07

申请号：US12730554

申请日：2010-03-24

申请人： Vincent Girard ,  Stéphane Mazet ,  Rémi Metivier ,  Alain Eberhard

发明人： Vincent Girard ,  Stéphane Mazet ,  Rémi Metivier ,  Alain Eberhard

IPC分类号： F01D5/00

CPC分类号： B64C27/35 ,  B64C27/51 ,  B64C2027/4736

摘要： The present invention relates to a rotorcraft blade (1) provided with at least one spar (3) and an outer covering (4), said blade (1) including a hollow sleeve (10) with a wall (11) that is provided at least with said outer covering (4) secured to said spar (3). The blade includes a rotary damper (20) provided with an inner tubular strength member (21) and an outer tubular strength member (22) that are coaxial and connected together by a ring (23) of viscoelastic material, said inner tubular strength member (21) being secured to said covering (4), and said outer tubular strength member (22) being provided with a fork (25) possessing first and second tines (26, 27) facing each other so as to be suitable for receiving a first ball joint (41) close to the pitch-variation axis (AX1) of said blade (1).

摘要翻译： 本发明涉及设置有至少一个翼梁（3）和外覆盖物（4）的旋翼航空桨叶（1），所述叶片（1）包括具有壁（11）的中空套筒（10） 至少与所述外覆盖件（4）固定到所述翼梁（3）上。 叶片包括旋转阻尼器（20），该旋转阻尼器（20）设置有内部管状强度构件（21）和外部管状加强构件（22），其通过粘弹性材料的环（23）同轴并连接在一起，所述内部管状强度构件 21）被固定到所述覆盖物（4）上，并且所述外部管状加强构件（22）设置有叉（25），所述叉（25）具有彼此面对的第一和第二尖齿（26,27），以适于接收第一 靠近所述叶片（1）的桨距变化轴线（AX1）的球形接头（41）。

公开(公告)号：US20100247312A1

公开(公告)日：2010-09-30

申请号：US12730554

申请日：2010-03-24

申请人： Vincent GIRARD ,  Stéphane MAZET ,  Rémi METIVIER ,  Alain EBERHARD

发明人： Vincent GIRARD ,  Stéphane MAZET ,  Rémi METIVIER ,  Alain EBERHARD

IPC分类号： B64C27/35

CPC分类号： B64C27/35 ,  B64C27/51 ,  B64C2027/4736

摘要： The present invention relates to a rotorcraft blade (1) provided with at least one spar (3) and an outer covering (4), said blade (1) including a hollow sleeve (10) with a wall (11) that is provided at least with said outer covering (4) secured to said spar (3). The blade includes a rotary damper (20) provided with an inner tubular strength member (21) and an outer tubular strength member (22) that are coaxial and connected together by a ring (23) of viscoelastic material, said inner tubular strength member (21) being secured to said covering (4), and said outer tubular strength member (22) being provided with a fork (25) possessing first and second tines (26, 27) facing each other so as to be suitable for receiving a first ball joint (41) close to the pitch-variation axis (AX1) of said blade (1).

摘要翻译： 本发明涉及设置有至少一个翼梁（3）和外覆盖物（4）的旋翼航空桨叶（1），所述叶片（1）包括具有壁（11）的中空套筒（10） 至少与所述外覆盖件（4）固定到所述翼梁（3）上。 叶片包括旋转阻尼器（20），该旋转阻尼器（20）设置有内部管状强度构件（21）和外部管状加强构件（22），其通过粘弹性材料的环（23）同轴并连接在一起，所述内部管状强度构件 21）被固定到所述覆盖物（4）上，并且所述外部管状加强构件（22）设置有叉（25），所述叉（25）具有彼此面对的第一和第二尖齿（26,27），以适于接收第一 靠近所述叶片（1）的桨距变化轴线（AX1）的球形接头（41）。