Dynamit-Nobel 4,7x21mm
Performance characteristics
4,7x21mm
Caliber, mm
4,7
cartridge weight, g
5
bullet weight, g
3,4
The weight of powder, g
1,6
Muzzle velocity, m / s
930
muzzle energy, J.
1470
these munitions (we are not talking about ordinary cartridges) They have been developed in the seventies by designers from the German company Dynamit-Nobel AG. Such cartridges can only be used to fire the rifle HK G 11, designed and constructed as a prototype of the German firm Heckler & Koch GmbH, which is still used for testing only. The cartridge consists of a compacted body of flammable substances, in the center of which is shipped to the middle of the bullet.
Complex technical problems when using such caseless ammunition are effective heat removal in order to prevent autoignition ammunition and creating a gas-tight closing device trunk (in conventional weapons, these functions are performed by the sleeve). although a 1977 at a chuck used combustible high flash point, Yet the problem completely failed to solve.
For several decades prior art to create caseless ammunition and weapons, which makes it possible to shoot such ammunition. There was no shortage in experiments, test models and prototypes, because the benefits of such munitions are obvious: This saves material, small total mass and relatively low production costs. Although currently such munitions and weapons exist, they still do not comply with the conditions, It puts the military departments during practical tests. But there are significant results, and it will take time, caseless ammunition to ousted, at least partially,, conventional ammunition for small arms.
