Transmission diagnostics of single-rotor helicopters

Abstract

The usage of instrumental methods to monitor the technical condition of mechanisms leads to improved efficacy in detecting and warning of malfunctions. Timely detection of malfunctions during aircraft operation allows to avoid sudden failures and, as a consequence, to increase flight safety. Detection of defects is possible both during maintenance and by using inbuilt systems on board the aircraft. This paper proposes the method of instrumental monitoring of tail shaft condition based on the Hall effect, following an analysis of applied methods of transmission element diagnostics in single-rotor helicopters. The research outcomes permit us to suggest the development of various forms of selective and continual monitoring systems for the helicopter transmission condition, and advise for their implementation.