RU2506654C2 - Method of displaying information on vertical displacement of shipborne landing strip when landing helicopter on ship - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to aircraft engineering and specifically to naval aviation to facilitate visual landing of a helicopter on a shipborne landing strip night and day. The method of displaying information on vertical displacement of a shipborne landing strip when landing a helicopter on a ship involves installing a multifunctional indicator on the dock or other bulkhead of the ship in a position close to vertical, with the front side directed towards the approach side of the helicopter, the multifunctional indicator having at least two information fields with luminous elements, e.g., based on LEDs of different colours, the first of which, parallel to the long side of the indicator, displays the scale of the height of displacement of the centre of the landing strip, and the second information field displays the current position of the landing strip, characterised by that on the second information field, information on the position of the landing strip is displayed in form of a colour bar graph consisting of lines of LEDs, the beginning of which is a line of LEDs displaying the current position of the landing strip and the end of which is a line of LEDs displaying the predicted position of the landing strip when it moves up or down.

EFFECT: safer landing of a helicopter on a ship in difficult weather conditions day and night.

7 dwg

Description

The invention relates to aeronautical engineering, mainly naval aviation, and can be used to provide visual landing of a helicopter on a ship take-off and landing platform (runway) day and night, with airborne and keel pitching, in simple and difficult weather conditions by increasing the level of awareness of the pilot visual method of helicopter landing on ship runways.

One of the main reasons complicating the process of helicopter landing is the accidental movement of the landing pad (runway), placed on the deck of the ship, due to the unrest of the sea surface.

For pilots, the most difficult task of helicopter flight is the landing on the runway, since to successfully solve this problem, it is necessary to combine the movement in six degrees of freedom of the helicopter with the movement in six degrees of freedom of the runway. As a rule, this task is solved in stages. For example, at the first stage, the pilot determines the height of the vertical movement of the center of the runway, takes a height position at which collision with the runway is eliminated, aligns the direction and speed of the helicopter with the direction and speed of the ship, moves and centers the helicopter over the runway, hangs over it and determines the moment when the runway takes a roll and trim position close to horizontal and moves down. To improve flight safety at this stage, various methods of information support and tools are being developed.

There is a method of providing the pilot with visual information on the vertical movement of the ship's landing strip during helicopter landing on a ship (see Yu.G. Basov, Light-signaling devices, Moscow, Transport, 1993, pp. 269-270, 309).

The method consists in turning on the green indicator when the deck is moving down, the red indicator of landing prohibition and the yellow indicator when the deck is moving up, the trim direction indicator down and the trim direction indicator up.

The signals for switching on the signaling devices are supplied by the electric power unit and signal decryption by cable.

The disadvantages of this method include the lack of information for deciding on landing on the runway, in particular with this method it is difficult to determine the moment of changing the direction of movement of the runway.

There is a method of indicating the parameters of the rolling runway of the ship (see "Tulip-B1", operating manual IZHTSP.676765.005 lighting complex "Tulip-V1").

The method consists of turning on the green indicators when the runway is moving down and red when the runway is moving up and turning on the signaling devices in a flashing mode for 0.5 s change of direction.

However, with this method, it is almost impossible for the pilot to see the moment of switching on the proximity sensors to the point of changing the direction of runway movement due to the speed of the process.

Closest to the claimed method according to the maximum number of similar features is the method adopted in the indicator of vertical movement of the optical landing system OSPV-20380 (see Optical landing system of the helicopter OSPV-20380. NKUG.461523.001RE). which is selected as a prototype. The method consists in displaying the current position of the center of the runway in the form of a luminous dot of green color relative to the luminous scale of the indicator of vertical movement of the runway yellow.

The disadvantages of the method for displaying vertical runway movement include the impossibility of promptly determining the direction of runway movement, the run period of the runway and the beginning of the change in its direction of movement, the low level of point recognition against the background of the glowing scale LEDs. All this reduces the level of safety of a helicopter landing on a ship runway in difficult weather conditions.

The basis of the invention is the creation of a method for displaying information about the vertical movement of the ship's landing strip on a multifunctional indicator to perform landing in difficult weather conditions, which ensures increased safety of helicopter landing on a ship in difficult weather conditions day and night by increasing the information content of the indicator.

The task is achieved in that in the known method, in the second information field, in addition to the green LEDs, LEDs of two light-emitting diodes, for example, yellow and red in each row of green LEDs, are clearly distinguishable from each other and with green color, and the computing device determines according to the navigation system the predicted vertical runway movement and, accordingly, the second information field includes a bar graph consisting of a group of LEDs hiccupped height proportional to the estimated height of the vertical movement VPPl green VPPl when moving downward and red VPPl when moving upward and when approaching the upper or lower lines bar graph line includes a yellow LED to warn the pilot to change the direction of motion VPPl.

By displaying the vertical movement of the runway in the form of a bar chart and applying color coding in anticipation of a change in the direction of movement of the runway, the level of awareness of the pilot increases to make a decision on the embedding of the helicopter.

Figure 1 shows a structural diagram of a system for providing the pilot with information about the direction and magnitude of the vertical movement of the runway.

Figure 2 shows the structure of the information panel of the device in test control mode.

Figure 3 shows the structure of the information panel of the device in

starting position.

Figure 4 shows the view of the panel when the runway is moving down - the beginning of the movement.

Figure 5 shows the view of the panel at the position of the runway before changing the direction of movement from the bottom up.

Figure 6 shows the view of the panel when the runway is moving up - the beginning of the movement.

7 shows a view of the panel at the position of the runway before changing direction from top to bottom.

Designations:

1. The power source.

2. Sensors of the pitching parameters of the ship.

3. The computing unit.

4. The indicator of vertical movement (IWP) of the take-off and landing platform (runway) of the ship.

5. Information field indicating the position of the runway -information field 2.

6. Information field for indicating the runway vertical scale - information field 1.

7. The green LEDs indicate runway down.

8. Yellow LEDs indicate scale marks.

9. The yellow LEDs indicate the position of the runway, close to a change in direction of movement from the bottom up.

10. Red LEDs indicating runway upward movement.

11. The yellow LEDs indicate the position of the runway, close to a change in direction of movement from top to bottom.

To implement the proposed method, the pilot is provided with information on the direction and magnitude of the vertical movement of the runway in the form of a height and color controlled bar graph consisting of at least three colors of LEDs.

The method is as follows.

Power is supplied from the power source to the navigation system 2, computing device (WU) 3 and indicator 4. On the indicator 4, in test mode, the LEDs on the information panels 5 and 6 are switched on sequentially or all at once. Then the indicator switches to the mode of constantly on LEDs of scale 8 on information field 6. WU for several measurements of the runway runoff period calculates its forecast value for the next period of vertical movement, taking into account keel, airborne qualities and vertical movement of the center of the core and taking into account the location of the center of the runway relative to the location of the sensors of the navigation system and issues a command to turn on all the LEDs that are in the range of the current and predicted upper or lower position of the runway. At the same time, the WU ensures the inclusion of green LEDs 7 when the runway is moving down, and red 10 when moving up. Before changing the direction of movement, the VU turns on yellow LEDs 9 or 11 in the range from the current position of the runway, close to the boundary to the position of the indication of the change in position. In subsequent periods, the VU calculates the boundary positions already taking into account the movement, i.e. the value of the rolling period is continuously adjusted by the calculator.

An advantage of the invention is that the pilot is provided with information about the vertical position of the runway in the form and amount sufficient for timely decision-making on the embedding of the helicopter on the ship runway.

Claims (1)

A method of displaying information about the vertical movement of the ship's landing strip during helicopter landing on a ship, which consists in installing a multifunction indicator on the hangar or other superstructure of the ship in a position close to vertical, with the front side facing the helicopter approaching the landing on which there are at least two information fields with light elements, for example, based on LEDs of different colors, on the first of which parallel to the long side of the indicator the runway center height scale is displayed, and on the second information field, the runway current position is displayed, characterized in that the runway position information is displayed in the second information field in the form of a color bar chart consisting of LED lines, the beginning of which is the LED line, showing the current position of the runway, and the end is a line of LEDs that displays the predicted position of the runway when it moves from bottom to top or top to bottom.

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