CN109250070B

CN109250070B - Method for marking flap lowering angle of upper single-wing aircraft

Info

Publication number: CN109250070B
Application number: CN201811119437.1A
Authority: CN
Inventors: 何倦户; 王先伦; 任开勋; 陈悦菲; 刘建平; 冯虎祥; 武卫东; 刘文平
Original assignee: AVIC Shaanxi Aircraft Industry Group Corp Ltd
Current assignee: AVIC Shaanxi Aircraft Industry Group Corp Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2021-09-14
Anticipated expiration: 2038-09-25
Also published as: CN109250070A

Abstract

The invention relates to a marking method for a flap lowering angle of an upper single-wing aircraft, which is used for observing the lowering angle of a flap from an observation point in a cockpit along the course behind the flap when a flap lowering angle indicating system of the cockpit fails. When the flap is put down at a certain angle, the trailing edge of the lower surface of the flap cabin is not overlapped with the leading edge of the flap, and the angle of the flap put down cannot be directly judged through the distance between the leading edge of the flap and the trailing edge of the lower surface of the flap cabin. The marks are arranged on the upper surface and the lower surface of the left flap and the right flap and the lower surface of the flap cabin, and different angles of the laid flaps are shown through the relative position relation of the marks and the display of observable quantities, so that the problem that the flap laying marks of the upper single-wing aircraft are not easy to arrange, observe and identify is solved.

Description

Method for marking flap lowering angle of upper single-wing aircraft

Technical Field

The invention relates to a marking method for a flap lowering angle of an upper single-wing aircraft, which is used for observing the lowering angle of a flap from an observation point in a cockpit along the course behind the flap when a flap lowering angle indicating system of the cockpit fails.

Background

The wing flap cabin is provided with an upper cover plate and a lower cover plate, the upper cover plate extends backwards for a long distance, the upper cover plate and the wing flap are provided with an overlapping area within the whole wing flap lowering angle range, most civil airliners are lower single-wing airplanes, the lower single-wing airplanes are within all the wing flap lowering angle ranges, the trailing edge of the upper surface of the wing flap cabin and the upper surface of the wing flap still have the overlapping area, the wing flap mark can be conveniently arranged on the upper surface of the wing, the aircraft set can be easily observed downwards from the cabin, angle values can be directly noted, the wing flap lowering angle can be accurately indicated, and under the condition that a wing flap lowering angle indicating system of a cockpit fails, the aircraft set can observe the lowering angle of the wing flap from the cabin, so that a pilot can conveniently control the flight speed, and the safe landing is facilitated.

And the upper single-wing transport plane, after the flap is put down by a certain angle, the trailing edge of the lower surface of the flap cabin is not overlapped with the leading edge of the flap, but is separated by a certain distance, the angle for putting down the flap can not be directly judged by the distance between the leading edge of the flap and the trailing edge of the lower surface of the flap cabin, the marking of the angle for putting down the flap of the upper single-wing transport plane is more complicated, and the marking is limited by the position of an observation window, and the relative spatial position of the flap and the flap cabin and the position of an observer are comprehensively considered.

Disclosure of Invention

The invention overcomes the problem that the design and the arrangement of the flap down angle mark of the existing upper single-wing aircraft are difficult to observe, and provides a method for the design and the arrangement of the flap down angle mark of the upper single-wing aircraft and the observation and use.

In order to solve the technical problem, marks are arranged on the upper surface and the lower surface of the left flap and the right flap and the lower surface of the flap cabin, different angles for placing the flaps are shown through the relative position relation of the marks and the display of observable quantities, when in observation, the marks of the flaps and the flap cabin are superposed at the position of the flap with 0 degree, and the upper marks are invisible; when the flap is put down to the first angle, the marks on the lower surfaces of the flap and the flap cabin are separated, and the mark on the upper part is invisible; when the flap is laid down to the second angle, the distance between the flap and the lower surface of the flap cabin is further increased, and meanwhile, the mark on the upper surface of the flap is rotated to an observable position, and the marks on the upper surface and the lower surface are visible; when the flap moves down to the third angle, the angle is larger than the second angle, the marks on the lower surface of the flap cabin and the upper surface of the flap are visible, and the marks on the lower surface of the flap are invisible; when the flap descends to the IV angle, the angle is larger than the III angle, only the upper surface mark of the flap cabin is visible, the lower surface mark of the flap is invisible, and the flap descending angle cannot exceed 4-angle steps. The size of the mark and the distance between an observation point in the machine body and the mark meet the requirement of vision of 0.8 or above, the characteristics of the mark (relative position relation and the number of observable displays) are easy to identify, the mark and the surrounding background color are displayed by strong contrast, and a non-light fluorescent material is adopted, so that the mark can be clearly visible in the cabin under the condition of illumination in the day and night. The invention can also: the system is used for monitoring and indicating the working conditions of mechanical arms and the like for various remote operation operations.

Has the advantages that: compared with the prior art, the invention solves the problem that the flap down mark of the upper single-wing aircraft is not easy to arrange, observe and identify.

Drawings

FIG. 1 is a schematic view of a flap marker arrangement and viewing window position of the present invention as viewed from below a wing;

FIG. 2 is a flap marking of a 0 ° flap as viewed from the viewing window;

FIG. 3 shows the flap marking at the flap lowering angle I, viewed from the observation window;

FIG. 4 shows the flap marking viewed from the observation window at a flap lowering angle II;

FIG. 5 shows the flap marking at the flap lowering angle III as seen from the observation window;

fig. 6 shows the flap marking from the observation window at the flap lowering angle iv.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: according to the position of the forbidden wing of the single-wing aircraft, an observation window for observing the marking of the flap lowering angle is appointed on a user manual, the flap mark is mainly designed by distance control at the position close to the fuselage, the change relation of the relative positions of the flap and a flap cabin lower cover plate and the flap is mainly utilized at the arrangement mark position, and the change relation of the spatial positions of the upper surface and the lower surface of the flap and an observer is utilized, so that the spatial positions and the number of the marks are changed when the flap is at different lowering angles, the observer judges the lowering angle of the flap according to different display conditions of the flap mark, and the marking conditions of the flap lowering angles corresponding to the flap at each lowering angle are listed in user data one by one.

Specifically, the method for marking the flap down angle of the upper single-wing aircraft comprises the steps that an observation window 4 is arranged on the side face of a fuselage 1, and the observation window 4 is arranged on the rear side of a wing 2; a first mark 5 is arranged on the lower surface of the wing 2, a second mark 6 is arranged on the lower surface of the flap 3, and a third mark 7 is arranged on the upper surface of the flap 3; the angle or the angle range at which the flap 3 is situated is indicated for each indicated combined state, viewed from the viewing window 4, respectively.

Said first 5 and second 6 indications are transverse; said third indication 7 is longitudinal.

When the alignment of the edges of the first and

second indications

5, 6 is observed, indicating the flap 3 in the 0 ° position;

indicating that the flap 3 is in the angle i position when only said first and

second indications

5, 6 are observed and separated by a gap;

when the first, second and

third indications

5, 6, 7 are observed simultaneously, the flap 3 is indicated in the angle ii position;

indicating that the flap 3 is in the angle iii position when only said first and

third indications

5, 7 are observed;

when only the third index 7 is observed, the flap 3 is indicated in the angular iv position.

The first 5, second 6 and third 7 indices take different shapes.

The first 5, second 6 and third 7 indicia are of different colours.

Claims

1. A method for marking a flap down angle of an upper single-wing aircraft is characterized by comprising the following steps: the method is characterized in that an observation window (4) is arranged on the side surface of a fuselage (1), and the observation window (4) is arranged on the rear side of a wing (2); a first mark (5) is arranged on the lower surface of the wing (2), a second mark (6) is arranged on the lower surface of the flap (3), and a third mark (7) is arranged on the upper surface of the flap (3); the angle or the angle range in which the flap (3) is located is indicated for each marked combined state, viewed from the viewing window (4);

indicating that the flap (3) is in the 0 ° position when the alignment of the edges of the first (5) and second (6) indications is observed;

indicating that the flap (3) is in the angle I position when only the first (5) and second (6) indications are observed and separated by a gap;

indicating the flap (3) in the angle II position when the first (5), second (6) and third (7) indications are observed simultaneously;

indicating the flap (3) in the angle III position when only said first (5) and third (7) indications are observed;

when only the third index (7) is observed, the flap (3) is indicated in the angular IV position.

2. The method of claim 1, wherein: the first (5) and second (6) indices are transverse; the third indication (7) is longitudinal.

3. The method of claim 1, wherein: the first (5), second (6) and third (7) marks are of different shapes.

4. The method of claim 1, wherein: the first mark (5), the second mark (6) and the third mark (7) adopt different colors.