FI73829B - GRANATKROPP FOER VINGSTABILISERADE PROJEKTILER. - Google Patents

Description

73829

This invention relates to a grenade body for wing-stabilized munitions, the body of which is ogival and the front end 5 of which is shaped to receive the tip portion containing the detonator and the rear end to receive the wing guide device.

Thrower grenades are known which taper, taper ogivally from their largest diameter region 10 both forwards and backwards. These projectiles are, at approximately their largest diameter, joined in two parts, the inner shape more or less corresponding to the outer shape.

This requires a lot of mechanical machining.

Further, ogival-shaped wing-thrown grenade launchers are known, in which the internal cavity of the grenade body is cylindrical. The rear part of the one-piece projectile body is again tapered, which is achieved by compressing the body material accordingly. However, this tapered rear part of the grenade body weakens the wall accordingly. In addition to this, the free rear opening for mounting the tailpipe will be relatively small in diameter. The internal cavity of the projectile body can then be completely filled only with a substantially fluid filler.

The object of the present invention is to provide a grenade body of the above-mentioned type for wing-stabilized ammunition, in which the manufacture of the grenade body is optimally combined with the best possible use of the internal cavity space provided therein. According to the invention, said grenade body 30 for wing-stabilized munitions is characterized in that the grenade body is divided at a distance of about a quarter of its length from the rear end of the projectile body and the rear part of the projectile body so that the cylindrical inner body engages the cylindrical bore at the front of the projectile body with a cylindrical protrusion and that the diameter of the cylindrical bore is about 0.75 to 0.82, preferably 0.80 instead of the caliber diameter of the grenade body.

By shaping the grenade body for wing-stabilized munitions in this way, a preferred combination of advantages is obtained. The division of the projectile body, known per se, is made at a point which is three-quarters of the length or more - calculated from the front end of the projectile body without the tip part. Thus, a cavity-10 cavity-shaped cavity space of considerable length and extent is obtained. Since the cylindrical cavity of the front projectile body part is open to the rear, i. it has no narrowing, the content can be pre-made in its shape and easily placed in place. The cylindrical cavity is large. It can accommodate a large package that takes up 15 spaces, for example a light charge, an explosive charge or the like, making it easy to place. The free opening of the cylindrical inner bore further has the advantage that the rear part of the projectile body, which is also hollow, can be securely and permanently placed in the cylindrical bore of the front of the projectile body by means of a cylindrical adapter. For this, only an additional safety part is required, which can be radial screws. There is also an open and easily accessible filling space at the back of the projectile body.

The length of the cylindrical bore is preferably about 65-70% of the length of the front of the projectile body, resulting in a considerably large filling space.

The ogival shape of the projectile body parts is preferably made such that the diameter of the front end surface of the front end of the projectile body and the diameter of the rear end surface of the rear body of the projectile body contacted by the tail tube are approximately equal and about half the caliber diameter.

The front end of the front of the projectile body may be provided with a through hole. The rear end of the rear of the projectile body is suitably closed. It may be provided with a pin-like adapter for screwing the tail tube closed. The depth of the cavity of the rear of the projectile body may be about half its length.

tl 3 73829

According to another feature of the invention, the center of the area of the Kalii perimeter diameter may be located at a point that is about 40-50% of the total length of the front and rear of the projectile body. This provides a grenade body whose ogi-5 light, forward and rearward tapering shape gives the wing-stabilized projectile good outer ballistic properties, to which it can be added that since the charge can be placed in place on the preformed body, it is possible to secure the projectile's correct pendulum torque.

In the following, the invention will be described in more detail on the basis of a structural example shown in the drawing.

The drawing shows a longitudinal section of a structural example according to the invention for a grenade body of wing-stabilized munitions.

The wing-stabilized projectile 1 has a grenade body 2 which is ogivally tapered forward and posteriorly. At the front of the grenade body 2 there is a tip piece 3 on which a lighter 4 is mounted. At the rear end of the projectile body there is a tail tube 5 for the propulsion cartridge and the wing device 6.

The grenade body 2 is divided into a front part 7 and a rear part 8 of the projectile body at a distance of about a quarter of its total length from the rear end of the projectile body 2 The front part 7 of the projectile body is provided with a cylindrical inner bore 9 open at the rear part of the projectile body 7, i.

The diameter of the 25 cylindrical bore 9 continues the same along its entire length. The diameter 10 of the cylindrical bore 9 is about 0.75-0.82 times the caliber diameter 11 of the grenade body 2. The length 12 of the cylindrical bore 9 is preferably 65-70% of the length 13 of the front portion 7 of the projectile body 7. The center 15 of the region 15 of the Ka-30 located at a point which is about 0.4 to 0.5 times the total length of the grenade body 2 calculated from the front end of the grenade body 2. In this area there are also ring grooves 16 in the outer surface of the front part 7 of the projectile body, in addition to which other ring grooves 17 are present in the already slightly tapered part of the front part 7 of the projectile body 35. The front end of the front projectile body 7 is preferably provided with a through-bore 18 in which the ignition cartridge can be placed. the cylinder

Claims (7)

1. For wing stabilized projectiles, grenade body having an ogival shape / the front of which is formed to receive a spark plug containing a spark plug and the rear part 5 a tailpipe fitted with a guide fin, and which is provided with a cylindrical internal bore, known - that the grenade body (2) at a distance of about a quarter of the length (14) - counted from the rear end - is divided into a front projectile body part (7) and a rear projectile body part (8) / that the cylindrical bore (9) freely opens into the rear end of the front (7) projectile body portion, the rear projectile body portion (8) engaging a cylindrical bore (20) into the cylindrical bore (9) of the front projectile body portion (7). ), and that the diameter of the cylindrical bore (9) is approximately 0 / 75-0 / 82, preferably 0.80 of the caliber diameter of the grenade body (2). A grenade body according to claim 1, characterized in that the length 20 (12) of the cylindrical bore (9) is approximately 65-70% of the length (13) of the front projectile body part (7). 3. A grenade body according to claim 1 or 2, characterized in that the center point (15) of the region of the caliber diameter (11) is arranged at a point which constitutes approximately 0.4-0.5 of the total size of the grenade body. length (14). 4. A grenade body according to any one of claims 1-3, characterized in that the front end of the front projectile body part (7) is provided with a continuous bore (18). 5. A grenade body according to any one of claims 1-4, characterized in that the rear projectile body part (8) is provided with a heel cavity (23), that the cylindrical shoulder piece (20) has a cylindrical interior and that the depth of the posterior tapered heel space (23) in the rear projectile body portion (8) corresponds to approximately half of the length of the rear projectile body portion (24). li