发明名称 |
Actuation system, helicopter using the same, and controlling method therefor |
摘要 |
An actuation system includes a pump assembly configured to form a pump chamber; an actuator having first and second chambers and a movable member and configured to convert pressures applied to the first and second chambers into a movement of the movable member; and a valve section. A controller controls the valve section to open a first flow path between the pump chamber and the first chamber and close a second flow path between the pump chamber with the second chamber, during a discharge period during which the pump chamber is pressurized, in a first mode; to close the first flow path and open the second flow path during an intake period during which the pump chamber is depressurized, in the first mode; to close the first flow path and open the second flow path during the discharge period in a second mode; and to open the first flow path and close the second flow path during the intake period in the second mode.
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申请公布号 |
US2008304967(A1) |
申请公布日期 |
2008.12.11 |
申请号 |
US20080153889 |
申请日期 |
2008.05.27 |
申请人 |
MORI SHIGEYUKI;SAITO HIROSHI;NAKAYAMA SHUICHI;SHIMOYAMA KUNIMITSU |
发明人 |
MORI SHIGEYUKI;SAITO HIROSHI;NAKAYAMA SHUICHI;SHIMOYAMA KUNIMITSU |
分类号 |
B64C11/32 |
主分类号 |
B64C11/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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