... of safety for the entire system) oblige to prepare the appropriate tools to model and monitor the system and its various components. In particular, it is needed to conceive new dedicated numerical models of the electrohydraulic servovalves (EHSVs) that control these systems, capable of combining...

... © MCB UP Limited 2001 --> Rugged Systems Litton Data Systems Helicopters Monitoring Helicopter monitoring system uses Litton V2A2 lightweight computer Keywords: Rugged Systems,Litton Data Systems, Helicopters, Monitoring UK-based Rugged Systems has chosen Litton...

... 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 Rotor‐induced vibrations are transmitted to the airframe by way of the main gearbox attachments. As these are an almost rigid link between the rotor head and the airframe, they transmit these main rotor‐generated vibrations...

... 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. © MCB UP Limited 1997 Airports Measurement Monitoring Noise Most traditional...

...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...

...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...