Upper monoplane flap laying-down angle marking method

Abstract

The invention relates to an upper monoplane flap laying-down angle marking method. The method is used for observing the laying-down angle of a flap from a point of view in the cabin after the flap inthe event of failure of a flap laying-down angle indication system in the cockpit. For an upper monoplane transport aircraft, the trailing edge of the lower surface of the flap compartment no longer overlaps with the leading edge of the flap after the flap is lowered at a certain angle, and the flap lowering angle cannot be directly determined by the distance between the leading edge of the flap and the trailing edge of the lower surface of the flap compartment. Marks are arranged on that left and right flap, the lower surface and the low surface of the flap cabin, and the different angles ofthe laying-down flap are indicated by the relative positional relationship of the marks and the display observable quantity, thereby solving the problem that the flap lowering marks of the upper monoplane are difficult to arrange and be recognized by observation.

Description

technical field [0001] The invention relates to a method for marking the flap lowering angle of a high-wing aircraft, which is used for the flight crew to observe the angle of the flap from an observation point in the cabin and behind the flap along the course when the flap lowering angle indication system in the cockpit fails. Put down the angle. Background technique [0002] The flap cabin has upper and lower covers, and the upper cover protrudes backward for a long distance. Within the range of the flap lowering angle, the upper cover and the flaps have overlapping areas. Most civil airliners place orders For low-wing aircraft, within the range of all flap lowering angles, the trailing edge of the upper surface of the flap cabin still overlaps with the upper surface of the flap, which is convenient for arranging flap marks on the upper surface of the wing, and the crew can easily move from the cabin to the upper surface of the flap. Observe from below, you can directly i...

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the problems of difficulty in designing, arranging, and using and observing the flap-down angle marks of the existing high-wing aircraft, and provides a method for designing, arranging, observing and using the flap-down angle marks of the high-wing aircraft

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