FR2512537A1 - INSTALLATION FOR DIRECTING A LAUNCHED BOMB FROM AN AIRCRAFT - Google Patents

Abstract

A.INSTALLATION FOR STEERING A BOMB LAUNCHED FROM AN AIRCRAFT. B. INSTALLATION CHARACTERIZED IN THAT THE FLYING MACHINE INCLUDES SENSORS TO DETERMINE THE POSITION OF THE BOMB AFTER ITS LAUNCHING, THE SIGNALS OF THE SENSORS FEEDING A COMPUTER ON BOARD OF THE FLYING MACHINE AND WHICH PROVIDES CONTROL ORDERS FOR THE ORGANS CONTROL OF THE BOMB, THESE COMMAND ORDERS BEING TRANSMITTED TO THE BOMB AFTER ITS LAUNCHING, BY THE DATA TRANSMISSION PATH WHICH STILL REMAINS A SHORT INSTANT AFTER LAUNCHING THE BOMB.

Description

The present invention relates to an installation for controlling a

  bomb launched from an air craft, and having control members for influencing the trajectory of the bomb. To control bombs launched by aerial vehicles, it is known to use aerodynamic brakes, parachutes and brake valves. It is thus possible to act on the trajectory of bombs and to improve the accuracy of their firing. accuracy of the firing of bombs launched from air craft is still not satisfactory, because for security reasons, it is always necessary to launch a number of bombs that correspond

  to a multiple of the number of bombs needed in theory.

  One of the reasons for this unsatisfactory vagueness

  the firing of bombs launched from air craft is the posi-

  Unstable aerial equipment at the moment of launch of the bomb Due to the influence of bursts, etc. or other disturbing surrounding influences, airborne machines must constantly undergo position variation calculations, especially when it is about planes flying slowly it follows that at the moment of the release of a bomb, there are only very few cases in which the trajectory of the bomb which corresponds to a launching parabola, makes it possible to In most cases, the position of the bomb at the time of its launch is so unfavorable that

  we can not hope for a satisfactory shooting accuracy.

  The present invention aims to improve the accuracy of firing a bomb launched from an aerial vehicle and comprising

  control members for influencing its trajectory.

  For this purpose, the invention relates to an installation characterized in that the aerial vehicle comprises sensors for detecting the position of the bomb at the time of its launch and whose signals feed a board computer on board the flying machine, this calculator calculating signals constituting direction orders for the steering bodies of the bomb, these signals being transmitted to the bomb after its launch, by the remaining data transmission path

  again for a short time after launch.

  In this way, weapon support platforms, unstable on air craft and measuring the position of the bomb are excluded, the initial conditions of the bomb are determined.

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  parabolic, to treat these initial conditions and act on the trajectory of the bomb It is thus possible with relatively small means to significantly improve the

  The orders can thus determine either the

  both and / or the amplitude of the adjustment of the control members; as control members can be used airbrakes, parachutes

or brake flaps, removable.

  To transmit the commands provided by the on-board computer, it is possible to use an electrical connection line that generally exists for setting the potential and / or for firing the detonator, when the bomb is being thrown, and for this purpose,

  for example, the carrier frequency technique can be used.

  Such an electrical connection normally remains for a short time, after the launch of the bomb, so that the extremely small time interval for the detection of data, their processing and their transmission, nevertheless remains perfectly sufficient It is also possible to provide for the data transmission path, wireless transmission paths, with a transmitter on board the air craft and a receiver on board the bomb This can be done using the high frequency technique or at the using a transmission by bright means. The present invention will be described in more detail with the aid of the accompanying drawings, in which: FIG. 1 schematically represents an overhead vehicle

carrying a bomb.

Figure 2 is a diagram.

  According to FIG. 1, an overhead vehicle 10 carries a bomb 12 under its carrying surface 11, the bomb 12 is fixed in a non-transparent manner.

  shown in detail to fasteners 13, 14 of the sup-

  11, this attachment being removable A removable connection line 15 exists between the bomb 12 and the bearing surface 11 of the machine 10 to ensure the electrical connection The connecting pipe 15 can be used to compensate for the potential between the surface 11 and the bomb 12 as well as to ignite the igniter of the bomb when it is launched. Two sensors 16, 17 which are provided on the lower side of the carrying surface 11

  between the fasteners 13, 14 serve to detect the posi-

  The signals provided by the detectors 16, 17 are transmitted by the drivers

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  18, 19 to a computer 20 on board the craft 10; the computer creates orders for the control elements not represented in detail of the bomb 12 These commands are transmitted by the output of the computer 20, by a data transmission path 21 to the bomb 12. In the embodiment shown in FIG. 1, the connection line 15 is part of the data transmission path 21, which can be achieved without great difficulty by the transposition of the control signals in another frequency range using the carrier frequency technique. possible to provide between the bearing surface 11 and the bomb 12 a wireless transmission path composed of a high frequency transmitter on board the air craft and a high frequency receiver on board the bomb; for

  this way, we can also use a light transmission.

  In each case, the data transmission path provides a short link for the transmission of the control signals, after the launch of the bomb 12. This is also true in the case of a connecting pipe 15, which forms a removable part of the data transmission path 21 The connecting line 15 is made in this case so that there remains a link for a duration of about 0.10 seconds after the launch of the bomb This duration is perfectly sufficient because to determine the control signals in the on-board computer and to transmit the data, it only takes a few microseconds. The solution of the invention thus provides commands to the control members of a bomb when it is in a certain position after launching; It is thus possible to act on the trajectory of the bomb. The control signals make it possible to determine the moment of adjustment of the control members and / or the amplitude of the control of the members. The bomb comprises control members and, if appropriate, a memory. to make it possible to adjust the control elements at the right moment and according to the correct amplitude.

  basically considers aerodynamic brakes and parachutes.

  It is also possible to use brake louvers whose covers can be removed by means of the control signals and

  corresponding control members.

  The invention can also be used advantageously

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  when the launch of the bomb is accelerated by

  auxiliary members such as springs or gas loads.

  Such a launching method is often used when a bomb must leave very quickly the aerodynamic zone, annoying of the flying machine In this case, it is also interesting to realize the data transmission path for the signals of

  control by a wireless data transmission path.

  According to Figure 2, the accuracy of the firing of a bomb

  Depends heavily on the position of the bomb at launch.

  If the position of the flying machine such as a plane that launches the bomb and thus the position of the bomb are horizontal we arrive at a relatively good shooting accuracy-provided that the launch of the bomb is done at the moment On the other hand, if due to bursts or other negative aerodynamic influences, the position of the throwing machine is inclined downwards or upwards, then the accuracy of the shot is bad even if the bomb is thrown at the However, the present invention makes it possible, thanks to the detection of the position of the bomb once launched and by the creation of control signals for the control organs of the bomb, to act on the trajectory.

  of the bomb and greatly improve the accuracy of the shot.

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Claims (2)

R E V E N D I C A T IO N S   ) Installation for controlling the firing of a bomb launched by a flying machine, the bomb having control members for acting on its path, installation characterized in that the flying machine (10) comprises sensors (16, 17) for determining the position of the bomb (12) after it has been launched, the signals of the sensors supplying a computer (20) on board the flying machine and which provides control commands for the control members of the bomb (12), these control commands being transmitted to the bomb (12) after its launch, by the data transmission path (21) which remains for a short time after the launch of the bomb.   2) Installation according to claim 1, characterized in that the control commands supplying the bomb after its launch, determine the timing of adjustment of the control members.   ) Installation according to any one of the claims   1 and 2, characterized in that the food control   the bomb (12) once launched, determine the amplitude of the adjustment of the control elements.   ) Installation according to any one of the claims   1 to 3, characterized in that the transmission path of   data (21), which remains for a short time after the launch.   the bomb between the aerial vehicle (10) and the bomb (12), is   constituted by an electrical connection (15).    ) Installation according to any one of revendica-tions 1 to 3, characterized in that the data transmission path (21) is constituted by a wireless transmission path formed of a transmitter on board the craft steering wheel (10) and a   receiver on board the bomb (12).