... technology, EH actuators are used for powering fly-by-wire aerodynamic surfaces, landing gear retraction, steering and braking as well as several secondary users. However, to match the safety requirements for the use in commercial and military aviation, redundancies and health monitoring strategies...

...   Plate 3 UK-based Rugged Systems has chosen Litton Data Systems' V2A2 lightweight computer as the basis of a new helicopter health monitoring system being developed with the Royal Netherlands Air Force (RNLAF) The new rugged system is said to offer a HUMS information management...

... in 1996 Rolls‐Royce launched the Adour 900, based on the current, well‐proven Mark 871, but offering thrust growth, improved life cycle costs and enhanced functionality. Central to the concept of the Adour 900 is a new Full Authority Digital Engine Controller with integrated Engine Health Monitoring...

... monitoring on North Sea helicopters is outlined. © MCB UP Limited 1999 Over a number of years a large amount of data has been gathered with this system as part of IHUMS. Typical information was collected during this time from helicopters such as Super Puma and S61. Vibration data are collected from...

...Terry Ford Describes the Westland active control of structural response (ACSR) technique for reducing and alleviating vibration. Examines a refined coupled rotor/flexible fuselage model based on the ACSR approach. Reports on vibration health monitoring (VHM) which has been developed by Westland...

... and correlation; and noise monitoring. Looks at international standards for noise monitoring and reports on the current noise monitoring terminal situation. Includes an Appendix on units of measure for noise. Modern European NMT from the two major companies are self‐contained, can operate for several days...

...Terry Ford Describes the piezoelectric accelerometer used for vibration monitoring and analysis and discusses its use. Reports on an advanced technique developed by Rolls‐Royce for application in a test cell ‐ the scanning laser Doppler vibrometer. © MCB UP Limited 1997 Aircraft industry...

...Peter Smith Describes the beginnings, development and successes of the gas path analysis program developed by Jet‐Care International. States that this program is the recommended method for monitoring filters and chip debris in Allied Signal TFE 731 engines. Indicates that it is currently being...

...Terry Ford Reports on a recent review of service experience relating to health and usage monitoring of rotorcraft transmission systems. Describes trials of integrated HUMS on military helicopters and an operator's experience using EuroHUMS on Super Puma helicopters. Informs on the vibration...