Abstract: A base bleed unit arranged to increase the range of fire or to reduce the time of flight for shells and projectiles includes a housing (1) surrounding a fuel charge (6) and associated igniter (4), extending from the rear portion of a projectile body (2) and including at least one outlet nozzle (5,5',5") for combustion gases, which by means of a mass flow, and possibly combustion adjacent to the base plane, reduce existing base drag. According to an embodiment of the invention, the housing (1) comprises a caseshaped member 1 attachable against a projectile body (2), having at least one igniter (4) arranged adjacent to an internal plane of a restricting wall surface at the housing (1), located in an opposed relationship to the portion of the housing (1) attachable against a projectile body (2). The combustion flame of the igniter (4) is hereby maintained directed towards the fuel charge (6) and away from the outlet nozzle/nozzles (5, 5',5").

Abstract: Arrangement for the manufacture of an elongated organ in which a compression arrangement (14) is so arranged as to displace and compress a quantity of material moistened with a bonding agent. Compressed quantities of material are caused to pass through a heated section (19) operating at high frequency in which two opposing side parts (15, 16) constitute components of a high-frequency apparatus, while two opposing side parts (17) consist of insulating material in the form of borosilicate glass.

Abstract: A ballistic artillery projectile that is initially spin stabilized and is provided with fins that are extended after the projectile has covered a part of its trajectory. The fins are attached to the body of the projectile by means of bars that are non-rotatably engaged with the fins and the projectile, and that have portions between the fins and the projectile that are designed to be deformed by torsion when the fins are being extended.