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Machine translation
1. (WO1979000037) PROJECTILE WITH ROTATION GENERATING FLOW CHANNELS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000037    International Application No.:    PCT/DE1978/000008
Publication Date: 08.02.1979 International Filing Date: 03.07.1978
IPC:
F42B 10/26 (2006.01)
Applicants:
Inventors:
Priority Data:
2731092 09.07.1977 DE
Title (EN) PROJECTILE WITH ROTATION GENERATING FLOW CHANNELS
(FR) PROJECTILE AVEC CANAUX DE CIRCULATION PROVOQUANT UNE ROTATION
Abstract: front page image
(EN)A projectile (G), having rotation generating flow channels (20), is intended particularly for shooting from a smooth gun barrel (R) and comprises a body (30) having guiding elements (32, 33). The guiding elements (32, 33) are provided with flow channels (20) that on their opening side have a part with a decreasing section followed by a bottle-neck and thereafter a part with an increasing section located downstream. The flow of driving gas through the flow channels (20) gives a rotation effect to the projectile (G). The center line of the flow channels in the increasing section part run, either straight or slightly curved, askew at a distance from the projectile"s center line (22). Furthermore, looking downstream, the internal walls of the increasing section part have a convex and/or straight shape and/or, at the most, slightly concave.
(FR)Un projectile (G) comportant des canaux de circulation (20) qui provoquent sa rotation, concu particulierement pour le tir a l"aide d"une arme a feu a canon (R) non raye, comprend un corps (30) avec des elements de guidage (32, 33). Les elements de guidage (32, 33) comportent des canaux de circulation (20) dont la partie situee vers l"orifice d"entree, qui presente une section decroissante, est suivie d"un etranglement derniere lequel est situee une partie de section croissante, situee en aval. La circulation du gaz propulseur dans les canaux (20) exerce un effet de rotation sur le projectile (G). La ligne mediane des canaux de circulation, dans la partie de section croissante, est soit droite soit legerement incurvee, est espacee de l"axe (22) du projectile et forme un angle avec celui-ci. De plus, en aval, les parois internes de la partie de section croissante presentent une forme convexe et/ou droite ou, au plus, legerement concave.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)