RU2206049C1 - Towed aerial false target - Google Patents

Abstract

FIELD: military aviation equipment. SUBSTANCE: towed aerial false target includes target proper connected by rope to aircraft. Head part of target carries ring mounted for rotation with reference to axis of target. Wall of ring has hole through which end of rope attached to aircraft passes freely. Rope is reeled in several layers on to body of target. EFFECT: simplified operation to outfit aircraft with false target, high speed of furnishing of false target. 4 dwg

Description

 The invention relates to the field of aviation technology and can be used as a towed false target when protecting the aircraft from homing missiles by re-targeting them to a false target towed at a certain distance from the aircraft.

 A device is known comprising an aircraft, a winch, a rope connected to a target, and a cutter. On the aircraft, by means of a winch with a rope, a target for training firing is suspended [1] (column 4).

 The disadvantage of the described device is the limited speed of winding the rope from the winch drum and, as a consequence, the insufficient speed of removal of the target from the side of the aircraft due to inertia of rotation of the moving parts of the winch and the mass of the rope remaining on the winch drum at any time. In addition, at aircraft speeds of more than 0.5 M (in Mach numbers), returning the target to the board creates an emergency situation due to unsteady flight of the target in the air stream during pulling up, which requires a priori chopping of the rope.

 A device [2] for winding threads related to the production of chemical threads, containing placed on the axis of the package holder, limiting plates and a flyer with thread conductors, mounted eccentrically to the axis of the package holder. The device [2] implements the principle of inertialess winding, the speed of which is significantly higher than the speed of winding thread-like material from the winch drum with the same pulling force.

 The invention is aimed at improving the usability when a priori cutting of the towing rope is required, and at increasing the speed of winding the towing rope when releasing a towed false target at the time of the attack on the aircraft of the guided missile.

 This is achieved by the fact that the device uses the principle of inertialess winding of a rope pre-wound on the target body.

 The invention differs from the known closest analogue [1] containing (see column 4 [1]) a target suspended by a rope on an aircraft in that a ring is mounted in the head of the target to rotate about the axis of the target, while in the ring wall a hole is made through which the end of the rope fixed on the aircraft is freely passed, and the rope itself is wound in several layers on the target body.

 The set of essential features that distinguish the invention from the specified analogue, when implementing the invention simplifies the equipment of the aircraft towed by a false target, because there is no operation to wind the rope, which is a single whole with the target. In combat use, an increase in the rate of release of a false target increases the effectiveness of retargeting an attacking missile at a false target.

 The invention is illustrated in the drawing, where Fig.1 shows a target with a wound rope; figure 2 - ring 2 in figure 1.

 The described device comprises: a rope 1, a ring 2, a target body 3 and a node 4. The anti-homing missile countermeasure equipment located inside the body, in FIG. 1 is not shown.

 The rope 1 is connected at one end to the target body 3 and is wound on the target body in several layers. The second end of the rope 1 is freely passed through an opening in the wall of the additionally inserted ring 2, mounted coaxially in the head of the target with the possibility of rotation relative to the axis of the target, and connected to the aircraft. The node 4 is intended for fastening the rope to the aircraft using, for example, pyro-bolt.

 A device mounted on an aircraft in a container or by other means, at the moment of the guided missile attack, is separated on command from the aircraft and, under the influence of the aerodynamic force of the incoming flow, the rope 1 is unwound from the target body and passes freely through the hole in the ring 2, which rotates freely under the action of the orthogonal component of the rope tension force. Since ring 2 is located in front of the target pressure center and is actually the target suspension point both in the process of winding the rope and when towing the target, the position of the target in space meets the requirements of aerodynamic stability of flight.

 Figure 3 shows a drawing of a towed false target after winding the rope to a length L. The digital designations of the structural elements in Fig. 3 correspond to the digital designations in Fig. 1.

 The fastening of the rope 1 on the aircraft is carried out for the node 4 using pyrobolt or in another known manner. After completing a combat mission, the rope along with the target is dropped on command from the board by applying an electrical signal to the pyro-bolt.

 To redirect an attacking missile to a false target, the target can be equipped with active means of simulating a radar portrait of an aircraft or it can include pyrotechnic means to counter heads with a thermal guidance system.

 Figure 4 shows an example of the construction of a towed false target designed to retarget a guided missile with a homing radar while protecting the aircraft from the front and rear hemispheres.

 The numerals 1, 2, 3, and 4 in FIG. 4 correspond to the numerals in FIG. 1. The remaining structural elements in figure 4: radiolucent fairings 5 and 8; base of antenna unit 6 and bearing 7.

 Radiolucent fairings 5 and 8 are protective elements of the transceiver antennas of the repeater located in the housing 3. The bearing 7 is pressed into the ring 2 and mounted on a narrow part of the base of the antenna unit 6, which is rigidly connected to the target body 3.

 Tests of the winding mechanism confirmed its performance.

 The winding speed was 10-15 m / s for a steel rope with a diameter of 2 to 3.5 mm.

Sources of information
1. Description of the invention to the patent of the Russian Federation 2067280, F 41 J 9/10, B 64 D 3/02 (Prototype. Coincident signs - column 4). Bull. 09.27.96.

 2. Description of the invention to copyright certificate 931632, B 65 N 49/02. Bull. 20, 05/30/82.

Claims (1)

 A towed airborne target containing a target connected by a rope to the aircraft, characterized in that a ring is mounted in the head of the target to rotate relative to the axis of the target, while a hole is made in the wall of the ring through which the end of the rope mounted on the aircraft is freely passed, and the rope itself is wound in several layers on the target body.

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