Key testing techniques for helicopter near ground flight safety monitoring

Helicopters are widely used in the field of general aviation due to their excellent low altitude performance. As a key capability of helicopter flight performance, ground maneuver flight is an important subject in helicopter flight testing. In order to ensure the safety and controllability of helicopters during ground maneuver flight tests, it is necessary to monitor some key parameters during helicopter flight in real-time. In response to the testing requirements for close range measurement of rotor and tail rotor, real-time monitoring and warning of aircraft near ground altitude during helicopter flight tests, key technologies such as matrix laser ranging technology and platform control algorithm were studied to determine the design scheme of key testing technologies for helicopter near ground flight. Based on this, the helicopter near ground flight safety monitoring and warning system developed has achieved helicopter near ground flight safety monitoring, which has important reference significance for the design of future helicopter flight test systems.