故障现象：机器原来主要是会报116（Film Pickup Failed）,117（Film Pickup Retry Notification,Code 21-116is generated on the third successive failed pickup attempt.）,因是早期设备,怀疑Pickup上的传感器连线断,于是更换了新的...故障现象：机器原来主要是会报116（Film Pickup Failed）,117（Film Pickup Retry Notification,Code 21-116is generated on the third successive failed pickup attempt.）,因是早期设备,怀疑Pickup上的传感器连线断,于是更换了新的Pickup,换后同样会报116,117,并出现双片现象。展开更多
Two methods for vibration characteristic investigation of the counter-rotating dual-rotors in an aero-en- gine are put forward. The two methods use DAMP tool on the MSC. NASTRAN platform and develope the re- solving s...Two methods for vibration characteristic investigation of the counter-rotating dual-rotors in an aero-en- gine are put forward. The two methods use DAMP tool on the MSC. NASTRAN platform and develope the re- solving sequence. Vibration characteristics of a turbofan engine are analyzed by using the two methods. Com- pared with results calculated using transfer matrix method and test results, the two methods are valuable and have great potential in practical applications for vibration characteristic investigation of aero-engines with high thrust-weight ratio.展开更多
文摘故障现象：机器原来主要是会报116（Film Pickup Failed）,117（Film Pickup Retry Notification,Code 21-116is generated on the third successive failed pickup attempt.）,因是早期设备,怀疑Pickup上的传感器连线断,于是更换了新的Pickup,换后同样会报116,117,并出现双片现象。
文摘Two methods for vibration characteristic investigation of the counter-rotating dual-rotors in an aero-en- gine are put forward. The two methods use DAMP tool on the MSC. NASTRAN platform and develope the re- solving sequence. Vibration characteristics of a turbofan engine are analyzed by using the two methods. Com- pared with results calculated using transfer matrix method and test results, the two methods are valuable and have great potential in practical applications for vibration characteristic investigation of aero-engines with high thrust-weight ratio.
