CH708402B1 - Mechanism of detection. - Google Patents

Abstract

The present invention relates to a detection mechanism (1) located on a helicopter tail that receives the electromagnetic waves in the air through the detectors on the helicopter by removing platform effects. The detection mechanism (1) according to the invention comprises at least one detection unit (2) which comprises detectors detecting the electromagnetic waves, at least one mounting piece (3) which is designed to mount on the rear section of the body. fuselage of the helicopter, at least one structure (4) which is located between the detection unit (2) and the mounting piece (3), at least one riser (9) which has a circular structure on the lower part of the structure (4) and at least one recess (8) which has a circular structure on the upper part of the structure (4).

Description

Description

FIELD OF THE INVENTION The present invention relates to a detection mechanism provided on a tail of a helicopter which makes it possible to receive electromagnetic waves in the air by means of the sensors present on the helicopter by eliminating the effects of the platform (horizontal stabilizing surface, rear rotor, tail shaft).

BACKGROUND OF THE INVENTION In the state of the art, the receiving antennas used to receive the electromagnetic waves in the air being affected by the fuselage of the helicopter, the parts in rotation and in movement in the helicopter (reflection / shadow effect) creates problems in the reception of real signals in the air by the receiving system and the processing of said signal.

In antenna arrangement methods using the prior art, the electromagnetic waves in the air are degraded due to the effects of the fuselage of the helicopter and it will therefore not be possible to obtain a precise orientation. using the signals received by the receiving systems through the antennas. In addition, in the systems used in the prior art, the electromagnetic energy received from certain areas is reduced due to the shadow effect of the platform.

These problems, which arise when using current techniques, affect the detection of weapon systems which detect aerial platforms by lighting them with an electromagnetic wave and constitute a threat. This situation causes a disadvantage in the protection of the platform against weapons systems.

Japanese patent document No. JP-1 0297 597 (A) describes an antenna which aims to increase the transmission of radio waves which is reduced due to interference from engine noise. Said antenna is fixed to the support at which the rear rotor is located.

US Patent Document No. US-4,528,564 (A) describes a warning device which is mounted on the tail portion so that the tail portion does not strike an obstacle during takeoff and landing and sends a signal to the helicopter. By means of the antenna located on said device, the height above the ground is calculated and a signal is sent to the helicopter.

Summary of the invention [0007] The objective of the present invention is to provide a detection mechanism provided on a helicopter tail which can detect the direction of the electromagnetic wave in the air in a concrete and precise manner .

Another object of the present invention is to provide a detection mechanism provided on a helicopter tail which prevents the decrease in the level of signal received from the antenna due to platform effects.

Another object of the present invention is to provide a detection mechanism provided on a helicopter tail which detects aerial platforms by illuminating them with an electromagnetic wave and allows the detection without any problem of the weapon systems which constitute a threat.

Yet another objective of the present invention is to provide a detection mechanism provided on a helicopter tail which does not neglect flight safety during takeoff / landing operations regardless of the position of the horizontal stabilizing surface .

Another object of the present invention is to provide a detection mechanism provided on a helicopter tail which has a shape which will not affect safety and the flight envelope from an aerodynamic point of view.

The object of the present invention is achieved by a mechanism according to claim 1.

Detailed description of the invention A detection mechanism provided on a helicopter tail developed to meet the objectives of the present invention is illustrated in the attached figures, among which:

fig. 1 is a schematic view of the detection mechanism provided on a helicopter tail;

fig. 2 is a view of the installation area of the detection mechanism provided on a helicopter tail;

fig. 3 is a schematic view of the detection mechanism provided on a helicopter tail on the helicopter;

fig. 4 is a schematic view of the structure and of the detection unit.

1. Detection mechanism

CH 708 402 B1

2. Detection unit

3. Assembly piece

4. Structure

5. Tail bole

6. Aft fuselage section of the helicopter

7. Horizontal stabilizing surface

8. Recess

9. Enhances

10. Access cover to the mounting part

11. Rear rotor A detection mechanism (1) provided on a helicopter tail, which makes it possible to detect the electromagnetic waves by ridding them of platform effects, is as described in the claims.

The detection mechanism (1) provided on a helicopter tail makes it possible to detect the electromagnetic waves in the air by the helicopter by means of the detection unit (2) by ridding them of the effects of the platform such as the rear rotor (11) or the horizontal stabilizing surface (7) of the helicopter.

The detection mechanism (1) provided on a helicopter tail makes it possible to detect the electromagnetic waves in the air without being affected by the platform effects for helicopters which have a horizontal stabilizing surface (7 ) mobile and a rear rotor (11) on the tail shaft.

With the detection unit (2) developed by means of the prior art and the establishment methods, the electromagnetic waves in the air are degraded due to the effects of the fuselage (6) of the helicopter, the effects of the horizontal stabilizing surface (7) and the rear rotor (11) and thus it is not possible to obtain a precise orientation by means of the electromagnetic waves received by the detection unit (2). This situation causes a disadvantage in the protection of the platform against weapons systems.

The detection unit (2) is put in place at the terminal part of the structure (4) which extends longitudinally so that it will not be affected (will not create reflection or d 'shadow effect) by the barrel (5) of the helicopter's tail, the different positions of the horizontal stabilizing surface (7) and the rotating rear rotor (11).

The structure (4) has a geometry such that it will not be affected by the different positions of the horizontal stabilizing surface (7) or the landing / take-off maneuvers by means of a circular riser (9) located on its lower part and a circular recess (8) located on its upper part.

The structure (4) has a geometric shape which does not significantly affect flight safety and the flight envelope from an aerodynamic point of view. The detection mechanism (1) provided on a helicopter tail has a structure which can withstand static and dynamic flight loads.

In a preferred installation of the tail detection mechanism (1), the mounting part (3) is mounted at the point of intersection of the rear section (6) of the fuselage of the helicopter and the barrel (5) of tail. The mounting piece (3) can easily be mounted on surfaces having different geometries.

The structure (4) located between the mounting part (3) and the detection unit (2) has an aerodynamic design. Thanks to its aerodynamic design, the detection mechanism (1) provided on a helicopter tail does not affect the flight performance of the platform and detects the electromagnetic waves which it is desired to detect without being affected by the platform.

In addition, the structure (4) is longer than the horizontal stabilizing surface (7) so that it will be further than any position of the horizontal stabilizing surface (7) in order to prevent the stabilizing surface horizontal (7) does not prevent electromagnetic waves from reaching the helicopter. Two detection units (2) are present at the end point of the structure (4). In order for the aircraft to be able to carry out a complete detection, it is necessary that a certain number of detection units (2) are placed symmetrically with respect to the flight direction. The detection units (2) are preferably placed at the end of the structure (4) at an angle of 90 degrees relative to each other. As a result, electromagnetic waves behind the platform in the direction of flight are able to be more accurately detected. The length of the structure (4) is greater than its width. The presence of the recess (8) on the upper part of the structure (4) prevents the horizontal stabilizing surface (7) from coming into contact with the structure (4) and from being damaged during its vertical movement. The circle diameter of the recess (8) is chosen

CH 708 402 B1 with such a dimension that it will prevent the structure (4) and the horizontal stabilizing surface (7) from coming into contact with each other.

In a preferred embodiment of the invention, the mounting part (3) can be mounted on any part of the intersection of the rear section (6) of the fuselage of the helicopter and the barrel ( 5) tail. According to helicopter models, the horizontal stabilizing surface (7) is mounted at different locations of the tail shaft (5). Because of this, the mounting part (3) is mounted at the most suitable location in the area of intersection of the rear section (6) of the helicopter fuselage and the tail shaft (5) depending on the location of the horizontal stabilizing surface (7) on different helicopter models. The mounting part (3) allows the structure (4) to be integrated into the structure of the helicopter.

In another preferred embodiment of the invention, the detection mechanism (1) provided on a helicopter tail is mounted on the part where the terminal part of the rear section (6) of the fuselage begins. helicopter and tail shaft (5). Said mounting details located at the end of the structure (4) vary according to the different helicopter platforms.

The two detection units (2) which are present at the end point of the structure (4) are preferably placed in relation to each other with an angle (a) included in a range of 80 to 110 degrees. Therefore, the electromagnetic waves that must be detected by the helicopter can be detected without being affected by the negative effects of the platform.

By remaining within the scope of these basic concepts, it is possible to develop various embodiments of the detection mechanism (1) provided on a helicopter tail according to the invention. The invention cannot be limited to the examples described in this document; it is basically in accordance with the definitions of the claims.

Claims (4)

claims 1. Detection mechanism (1) provided for a helicopter tail and making it possible to detect electromagnetic waves by eliminating them from platform effects, which comprises - at least one structure (4) provided with at least one riser (9), at least one recess (8), at least one mounting part (3) and at least one cover (10) access to the mounting means, - the at least one extension (9) is located on the lower part of the structure (4) and has a circular shape, - the at least one recess (8) is located on the upper part of the structure (4) and has a circular shape, - the at least one mounting part (3) is designed to be mounted at the point of intersection of the rear section (6) of the helicopter's fuselage and the tail shaft (5), and - the at least one cover (10) for access to the mounting means is provided on the mounting piece (3) so as to provide easy access to the mounting means in the mounting piece (3), and is characterized by - at least one detection unit (2) mounted on the structure (4), which includes detectors capturing electromagnetic waves. 2. Detection mechanism (1) provided on a helicopter tail according to claim 1, characterized in that the at least one detection unit (2) is placed at the end of the structure (4) which is longer than a horizontal stabilizing surface (7) mounted on the rear section (6) of the helicopter's fuselage. 3. Detection mechanism (1) provided on a helicopter tail according to any one of the preceding claims, comprising at least two detection units (2) which are put in place at the end point of the structure ( 4) and which are placed so as to form an angle of 80 to 110 degrees (2a) between two axes perpendicular to their respective surfaces. 4. Mechanism (1) of detection provided on a helicopter tail according to claim 3, characterized in that the at least two detection units (2) are placed at the end of the structure (4) so to form an angle of 90 degrees between the two axes perpendicular to their respective surfaces.