EP0090184A2 - Practice rocket - Google Patents

Abstract

The practice rocket is to be fired from an original projectile tube for live shooting. Its outside diameter is smaller than that of the original rocket for live shooting, and to be guided in the projectile tube it is equipped with spacer elements which are arranged at a distance from one another, as seen in the longitudinal direction, and which slide along on the tube wall during firing. <IMAGE>

Description

The invention relates to a practice rocket of the type specified in the preamble of claim 1.

A considerable amount of time and resources is required for the practical training of the operating personnel of missile weapon systems. The training takes place with rocket practice ammunition under actual field conditions. This practice ammunition consists of the original rocket engine and a practice rocket head, which, depending on the type of screwed-on detonator, is disassembled on impact or while still in flight.

Prior to training the operating personnel of the fire control devices, so-called radar target rockets are started and their trajectory is measured before the practice rockets are fired, then the course of this actual trajectory is compared with the theoretical trajectory and finally the corrective correction values are determined by the fire control computer The effort for this training is particularly significant because, as a rule, the correspondingly large firing ranges are relatively far away from the respective locations of the missile units and the usual practice rockets are very expensive. The consequence of this is a very limited practical training.

The object of the invention is to avoid these disadvantages, i.e. a training rocket of the type specified in the preamble of claim 1 in particular so that the effort required for it is relatively low and they can be used under field conditions on those shooting ranges that are primarily suitable for training with light infantry weapons in terms of their size. Such firing ranges are usually not only near infantry barracks, but also near the locations of rocket launcher units.

This object is achieved by the training specified in the characterizing part of claim 1. The spacing elements located at a distance from one another are preferably arranged such that the center of gravity of the practice rocket lies between them. The practice rocket according to the invention, which is sub-caliber in comparison to the original rocket, is designed such that it represents a scale reduction of the original rocket with regard to its external ballistics. It is fired from the original rocket launcher, the trajectory is tracked with the original fire control radar and the correction values are determined by the original fire control computer. For this purpose, a computer program changed in the scale of the trajectory reduction is entered in the latter before the start of the exercise, which takes into account the trajectory that has been reduced in size compared to the original rocket.

In an advantageous embodiment of the invention Claim 2 used anyway the guide surfaces as spacers.

The spacer elements provided to compensate for the difference in diameter (caliber) between the original and the practice rocket can be designed to be repulsive in order to avoid any undesired change in the flow conditions.

According to claim 4, the spacer elements can also be used for swirl transmission, e.g. are provided with guide devices which slide in the twist trains of the launcher tube and thus impart the desired rotation about their longitudinal axis to the practice rocket.

A particularly advantageous in terms of handling training is given in claim 5. The spacer elements are supported on the inner wall of this "auxiliary" launcher tube. The auxiliary launcher tube, which is short in comparison to the original launcher tube, is preferably also provided with swirl trains in which the spacer elements engage.

In order, in particular, to be able to carry out the loading process as exactly as possible with the original shot, the embodiment according to claim 6 has proven to be advantageous. Thereafter, the outline of the auxiliary launcher tube in the area of the missile sleeve bearing is designed such that it corresponds to the original missile, in particular in the area of electrical contacting. The outer diameter of the auxiliary launcher tube is approximately equal to the inner diameter of the original launcher tube, so that it can be used properly.

Another advantageous possibility is in claim 7 specified, from which use can be made if the purpose of the exercise can also be achieved.

The practice rocket can be equipped with a rocket head that functions as the original warhead, e.g. simulated with regard to target point marking, discharge point marking, cutting point marking or marking of the trajectory. To achieve a radar echo, it is also readily possible to install a reflector in the missile head, which reflector reflects the radar signal emitted by the fire control radar in such a way that trajectory tracking and recording is possible.

It also proves to be advantageous that the practice rocket can be packaged, transported, stored, etc. in the packaging of the original rocket, thereby reducing the logistical effort to a minimum.

• Fig. 1 einen Längsschnitt durch das Original-Werferrohr entlang den schraubenlinienförmig gewundenen Drallzügen,
• Fig. 1a und 1b zugehörige Querschnitte,
• Fig. 2 eine Variante zu Fig. 1,
• Fig. 2a einen zugehörigen Querschnitt,
• .Fig. 3a und 3b Einzelheiten zu Fig. 2 und 2a,
• Fig. 4 einen Längsschnitt entsprechend Fig. 1 mit einem in das Original-Werferrohr eingesetzten Verpackungs- und Abschußrohr und
• Fig. 4a und 4b zugehörige Querschnitte.

The invention is shown in the drawing in exemplary embodiments and is explained in more detail below with reference to this. They show a schematic, not to scale, illustration

• 1 shows a longitudinal section through the original launcher tube along the helically twisted swirl trains,
• 1a and 1b associated cross sections,
• 2 shows a variant of FIG. 1,
• 2a an associated cross section,
• .Fig. 3a and 3b details of FIGS. 2 and 2a,
• Fig. 4 is a longitudinal section corresponding to FIG. 1 with a packaging and launching tube inserted into the original launcher tube and
• 4a and 4b associated cross sections.

Fig. 1 shows the original launcher tube 1 with the twisted twists 2 wound into the plane of the drawing and with the sub-caliber training rocket 3 used, shown in the view, the guiding surfaces 5 acting as spacer elements 4 and the two arranged in front of the center of gravity S. Round rods 6, which also act as spacer elements and engage the twist trains 2.

Fig. 1a shows a section along the line A-B in Fig.1, which shows the engagement of the tail surfaces 5 in the swirl cables 2. The same applies to Fig. 1b, which shows the engagement of the round rods 6 as a section along the line C-D in Fig. 1.

Instead of the twist pulls 2, other guide devices, e.g. winding guide rails can be provided on the inner wall of the original launcher tube, as can an internally smooth launcher tube can be used.

In the variant shown in FIG. 2, the at least two spacer elements 4 are designed as detachable spacers 7, which are arranged here again such that the center of gravity S of the practice rocket 3 lies between the guide surfaces 5 and the spacers 7.

Fig. 2a shows a cross section corresponding to that of the win rarely section line EF in Fig. 2. The four spacers 7 engage with their guide pins 8 in the twist trains 2.

FIG. 3a shows the detail X from FIG. 2 on an enlarged scale. The spacer 7 is locked until it is fired by means of the spring-loaded ball 9. When fired, the practice rocket 3 is accelerated according to arrow A, so that the ball 9 remains and thus releases the retaining bolt 10 of the spacer 7. After emerging from the launcher tube 1, the spacer 7, supported by the rotation of the practice rocket 3, is thrown off.

3b shows, as an enlarged detail Y from FIG. 2a, an analog variant in which the unlocking takes place due to the rotational movement of the practice rocket 3, corresponding to the arrow B in the launcher tube 1.

In the variant shown in FIG. 4, the practice rocket 3 is inserted into the tube 11, which acts here as an "auxiliary" launcher tube with twist pulls 12, which in turn is inserted into the original launcher tube 1 and held by means of the lock 13. The tube 11 is closed at the rear by means of the cover 14 which can be ejected during firing and by means of the foam cover 15. The electrical contact 16 is formed due to the compatible design of the launcher sleeve bearing 17 as in the original rocket.

FIG. 4a shows the view corresponding to the arrow Z in FIG. 4, while FIG. 4b shows the cross section along the line G-H in FIG. 4. The reference numbers have the same meaning as previously explained.

Claims (7)

1. Practice rocket for launching from an original launcher tube for the sharp shot, characterized in that the outer diameter of the practice rocket (3) is smaller than that of the original. rocket for the sharp shot and the practice rocket (3) for guidance in the launcher tube (1, 11) with - viewed in the longitudinal direction - at a distance from each other, is provided when firing along the wall of the launcher along spacing elements (4). 2. Training rocket according to claim 1, characterized in that the tail unit (5) arranged in the region of the rear end of the training rocket (3) is at the same time designed as a spacer element (4). 3. Practice rocket according to claim 1, characterized in that the spacer elements (4) after the practice rocket (3) can be dropped from the launcher tube (1). 4. Practice rocket according to one of claims 1 to 3, for a launcher tube with swirl trains, characterized in that the spacer elements (4) engage in the swirl trains (2, 12). 5. training rocket according to one of claims 1 to 4, characterized in that the training rocket (3) with spacer elements (4) in a serving as a packaging and launching unit tube (11) is used, which in turn can be used in the original launcher tube (1) and compatible with its electrical contact (16) 6. Practice rocket according to claim 5, characterized in that the tube (11) corresponds at least in its rear region (17) in its outer shape and the outer dimensions with the original rocket. 7. training rocket according to one of claims 1 to 6, characterized in that it is the original rocket of a weapon system of smaller caliber than the original launcher tube.

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