Helicopter synthetic vision display method

Abstract

The invention discloses a novel synthetic vision display method, which comprises the following steps of: switching a visual angle based on a ground speed and a drift angle of a helicopter, providing asynthetic vision image taking a course as the visual angle when the helicopter is on the ground, providing a synthetic vision image of a transition visual angle when a take-off climb exceeds a set speed value, and providing a synthetic vision image of a transition visual angle when the speed is continuously increased to exceed an optimal climb speed, providing a synthetic visual image taking theflight path as a visual angle; when the drift angle is too large, switching the synthetic view into a transition view angle and a course view angle; when the speed is reduced to approach, switching toa course visual angle; at the moment, if the flight path angle of the helicopter exceeds the standard approach angle, the display position of the horizontal position indicator descends, and the attitude pitch scale display is wider in range. According to the method, the synthetic visual image with a proper visual angle is displayed according to the ground speed and the drift angle of the helicopter, and the display position and the pitching scale display range of the horizontal position indicator are automatically adjusted according to the flight path angle of the helicopter, so that the flight environment is coordinated with the synthetic visual image.

Description

technical field [0001] The invention belongs to the field of helicopter cockpit display, and in particular relates to a method for displaying a synthetic scene of a helicopter. Background technique [0002] Helicopters have the capabilities of vertical take-off and landing, maneuvering flight, etc., and are widely used in emergency rescue, cargo transportation, border patrol, etc. During helicopter take-off, landing and flight, complex natural environments such as mountains and hills, and complex meteorological conditions such as rain, snow, haze, and sand and dust pose a serious threat to flight safety. In particular, when the helicopter takes off and lands in the field, a large amount of dust blown by the rotor will affect the pilot's vision, and the pilot is not familiar with the surrounding geographical environment and landing site, which is prone to danger. [0003] Synthetic vision is a three-dimensional virtual vision generated by using terrain data, obstacle data, a...

AI Technical Summary

Problems solved by technology

When the helicopter performs a steep approach under poor visual conditions, the pilot needs to observe the landing site and the surrounding environment through the lower image of the synthetic view, and the horizontal position indicator will block this part of the image, affecting the pilot's acquisition of information and increasing work burden

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