DE958275C - Tail unit for projectiles, especially shaped charge projectiles - Google Patents

Description

ISSUED FEBRUARY 14, 1957

A 16641X1 / 72 d

The invention relates to a tail unit on projectiles, especially shaped charge projectiles is arranged at the tail end and made of folding wings that open from the rear to the front when the gun is fired consists.

For rocket projectiles, those with a bucket in the projectile body arranged propellant charge have already been proposed on the nozzle bottom the propellant charge chamber to arrange a piston with a toothed piston rod in toothed segments engages on folding wings, which when fired by the pressurized by the propellant gases The piston can be folded back to the front into the open position. Are in this position it is prevented from folding backwards by springs arranged on the nozzle bottom of the propulsion chamber secured.

In the case of the projectile according to the invention The folding wing is not caused by propellant gases escaping from the projectile, but by the pressure of the Propellant charge gases of a firearm are opened, which act on the projectile from behind. the The folding wings arranged on the tail of the projectile can only open when the projectile hits the launch tube has left. At this moment, however, there is only one left to open the folding wing.

reduced gas pressure available because the propellant gases are released when they exit the pipe, and, moreover, the air resistance acts on the opening of the folding wings by a forward pivoting movement opposite.

In order to achieve a safe opening of the folding sash under these conditions, yourself when the wings are long and in the open position over the largest floor cross-section considerably protrude, it is provided according to the invention that the folding wings have sharpened outer edges to reduce the air resistance when unfolding and flat inner edges to form of attack surfaces for the propellant gases causing them to spread.

In order to achieve a safe guidance of the projectile with its tail in the barrel of the weapon and damage to the. to prevent sharpened outer edges of the folding wings through the pipe wall, the sharpened outer edges of the folding wings have a flat guide surface, which in the folded position of the wings protrudes radially over the sharpened outer edges.

In a known manner, spring-loaded locking devices can be provided that the Secure the folding sash in the open position against folding back and here it is expedient to use spring-loaded There are locking bolts that run concurrently with theirs in the storage of the folding wings Bearing axles are arranged.

Is the projectile in a tail enclosing the projectile Cartridge sleeve inserted, which the folding wings in their folded position holds, the folding wings are so long that their ends in the annular space between the jacket and the perforated cartridge insert of the cartridge sleeve so that they enclose this insert. The propellant gases from the firearm then have good access to the wide inner edges the folding wing when the projectile leaves the barrel.

The drawings show an example of the implementation of a projectile tail unit according to the invention, namely shows

Fig. Ι a projectile with cartridge in side view, partly in cut,

Fig. 2 shows the same projectile after 'the launch with spread tail in side view and 3 shows a section through a detail on the tail unit.

The hollow charge projectile shown has a jacket 1, which is surrounded by a pointed hood 2 at the front is complete, which carries a head fuse 3. The explosive charge 4, 5 is located in the jacket. The rear part 6 of the projectile tapers towards the rear and serves as a support for the tail unit, which has several wings 7. The wings can be swiveled towards the floor, that they are approximately parallel to the longitudinal axis of the projectile and between the rear part of the projectile surrounding cartridge case 8 and the propellant charge holder 9, which is in the bottom of the cartridge is attached and has a number of holes 10.

The tail unit is arranged in the collapsed state so that the wings 7 are the rear end of the projectile.

Each wing can be pivoted about a bolt 11, the transverse to the projectile axis in a wing holder attached to the tail support 6 of the projectile is arranged.

The cartridge sleeve 8 is attached to the projectile by a sealing ring 13 made of elastic or deformable material Material held. The projectile also has a guide ring 14, which when firing engages in the trains of the pipe. The sealing ring 13 secures the sealing of the cartridge, also improves the sealing of the projectile in the barrel during launch and can be used in front of the muzzle thrown off the pipe.

As FIG. 2 shows, the wings 7 forming the tail unit can be opened from the rear to the front. They are then at an angle to the axis of the projectile, which is selected according to the projectile speed and the desired ballistics. At the end of the spreading movement, the wings rest with their front edge 15 against the surface of the tail boom 6 and are locked at this moment. This is done by means of a locking bolt® iy arranged in the wing which, under the action of a spring iy _a, snaps into an opening provided in the wing holder 12 (FIG. 3).

To reduce air resistance and correct and sudden spreading of the tail facilitate, each wing 7 is sharpened on its outer edge at 18, while it is sharpened on its inner edge has a flat surface 19 which, when the tail unit is folded, is essentially parallel to the axis of the projectile and on which the pressure of the propellant gases when the projectile emerges from the Pipe affects. In addition, each wing has a flat surface 20 on its outer edge, the rests against the inner surface of the cartridge 8 in the collapsed position of the tail unit and is used to guide the projectile in the barrel of the weapon.

Claims (4)

PATENT CLAIMS: 1. tail for projectiles, especially hollow-charge projectiles, having at launch from back to front opening, arranged at the tail end of folding wings that are secured in the open position by spring-loaded latches against folding back, characterized overall n ₅ denotes that the folding wings (7) sharpened Have outer edges (18) and flat inner edges (19). 2. tail unit according to claim 1, characterized in that that the folding wings (7) on their generally sharpened outer edges (18) one in the folded Position of the wings over the sharpened edges have radially protruding flat guide surface (20). 3. tail unit according to claim 1 or 2, characterized ias characterized that the locking of the folding wing (7) by spring-loaded locking bolts (17, 17J in a known manner, which in the Storage of the wings are arranged parallel to their bearing axes (11). 4. tail unit according to one of the preceding claims, characterized in that the Folding wing (7). are so long that their ends in the annular space between the jacket (8) and the perforated cartridge insert (9, 10) of the cartridge sleeve are sufficient. Documents considered: Swiss Patent No. 214 639 ; British Patent No. 634,090. 1 sheet of drawings © 609 578/108 7.56 (609 797 2. 57)