EP 0550847 A3 19930908 - GUN BARREL
Title (en)
GUN BARREL
Publication
Application
Priority
DE 4200171 A 19920107
Abstract (en)
[origin: EP0550847A2] The invention relates to a gun barrel having rifling with a variable rifling angle and having a strip force R(x) (which acts when a round is fired) over the round path (x) in the gun barrel, the calibre d, the round mass mG, the mass moment of inertia J about the round longitudinal axis, the gas force P(x) on the base of the round and the speed of the round v(x) being predetermined. In order to achieve exact rifling (in the context of manufacturing tolerances) corresponding to diverse desired properties of the strip force, it is provided that the strip force R(x) be determined in accordance with R(x) = RmaxRn(x), where Rmax is the maximum value of the strip force which is dependent on a predetermined final rifling angle beta E, and Rn(x) is a predetermined, normalised strip-force behaviour with a specific rifling start, a specific initial rifling angle and a specific rifling profile, the course of the rifling on the calibre diameter being derived from the differential equation <IMAGE> and Rmax being determined for a predetermined final rifling angle beta E. <IMAGE>
IPC 1-7
IPC 8 full level
F41A 21/18 (2006.01)
CPC (source: EP US)
F41A 21/18 (2013.01 - EP US)
Citation (search report)
- [XD] EP 0437675 A2 19910724 - RHEINMETALL GMBH [DE]
- [AD] DE 3409073 A1 19850926 - MAUSER WERKE OBERNDORF [DE]
- [A] DE 307710 C
- [A] DE 2140566 A1 19730301 - WEGMANN & CO
- [A] GB 127849 A 19190619 - HARRISON CHARLES WILFRID [GB]
- [T] RHEINMETALL 'WAFFENTECHISCHES TASCHENBUCH' 1989 , RHEINMETALL GMBH , DüSSELDORF
- [T] C. CRANZ 'INNERE BALLISTIK' 1926 , JULIUS SPRINGER VERLAG , BERLIN
- [T] L. H[NERT 'GESCH]TZ UND SCHUSS' 1940 , JULIUS SPRINGER VERLAG , BERLIN
- [A] US-H-H278 (J. STEINER)
Designated contracting state (EPC)
CH DE FR GB LI SE
DOCDB simple family (publication)
EP 0550847 A2 19930714; EP 0550847 A3 19930908; DE 4200171 A1 19930708; DE 4200171 C2 20010726; US 5337504 A 19940816
DOCDB simple family (application)
EP 92121123 A 19921211; DE 4200171 A 19920107; US 171793 A 19930107