Slope indicator flash on-off mechanism

Abstract

The invention provides a slope indicator flash on-off mechanism. A red light shading plate intermittently shades a red region of a three-color filter so as to achieve a normally-open function of red flash; a yellow flash light shading plate carries out intermittent shading or complete opening on a yellow region of the three-color filter by a flash on-off unit so as to achieve an on-off function ofyellow flash; and a side flash light shading plate carries out intermittent shading or complete opening on a side flash region of the three-color filter by the flash on-off unit so as to achieve an on-off function of side flash. Therefore, the slope indicator flash on-off mechanism provided by the invention can achieve the flash on-off function of a slope indicator, and only uses one motor on thebasis of a rotary table transmission structure, so that the light shading plates carry out shading and non-shading cycled working, i.e., carry out intermittent shading, in the yellow flash and / or side flash region, a light and non-light cycled flash phenomenon is implemented, and a three-color visual approach slope indicator is driven to achieve a flash function; mechanical and circuit structuresare simplified; reliability when a system works is improved; and working noise is reduced.

Description

technical field [0001] The invention relates to the technical field of aviation equipment, in particular to a gradient indicator flash on-off mechanism based on a turntable transmission structure. Background technique [0002] The three-color visual approach slope indicator is a light indicating device used to guide the pilot to correctly adjust the flight slope when approaching the track. Such as figure 1 As shown, the three-color visual approach slope indicator used at the airport can provide pilots with three slope signals: yellow-above the approach course, green-on the approach course, red-below the approach course. The beam angle in the vertical direction is 14°, of which yellow light is 8°, green light is 2°, red light is 4°, and the horizontal angle is 32°. The flash mechanism requires three types of flashes: yellow flash, red flash and side flash, and the frequencies of the three flashes are different. The yellow flash frequency is 0.7Hz, the red flash frequency i...

AI Technical Summary

Problems solved by technology

In this method, when the slope indicator is working, since there are three motors working at the same time, the design of the circuit drive is more difficult, the motor emits a lot of noise, and a large amount of energy consumption is generated, and the accuracy of the photoelectric induction device and motor control is high. At the same time, the mechanical size of the equipment is increased

[0004] In addition, the visual approach flash mechanism in the prior art fails to separately control the on-off status of the yellow flash, red flash and side flash in the three-color visual approach slope indicator, that is, it can only realize yellow flash and red flash at the same time. Same state as side flash

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