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    • 7. 发明授权
    • A PROJECTILE GUIDE MECHANISM
    • 一个项目指导机制
    • EP0205541B1
    • 1989-03-22
    • EP86900299.8
    • 1985-11-25
    • Affärsverket FFV
    • ARNELL, Anders
    • F42B13/32
    • F42B10/20
    • A guide mechanism for a projectile (2) which is intended to be fired from a barrel (3) with the aid of propellant gases. The projectile comprises a plurality of elongated fins (5) which are journalled at one end thereof and which are arranged to occupy a folded position during passage of the projectile through the barrel. The fins are subjected to a fin-extending force with the aid of a piston (7) which is arranged for movement in a housing (6) in the guide mechanism. The guide mechanism also incorporates a channel means (10) through which during a pressure increase phase of the propellant gases in the barrel the gases are passed to a chamber (9) located on one side of the piston and build-up a piston working pressure (p) in said chamber. The channel means (10) has arranged therein a valve (11) which is operative in throttling the channel means during a pressure reduction phase of the propellant gases. This pressure reduction phase can be dimensioned to commence before the guide mechanism reaches the muzzle of the barrel.
    • 9. 发明公开
    • Method and apparatus for making tubes or shafts having a low weight and low weight tubes or shafts made according to the method
    • 用于制造具有低重量和低重量的管或管子的方法和装置根据该方法制造
    • EP0213097A3
    • 1987-05-06
    • EP86850260
    • 1986-07-16
    • Affärsverket FFV
    • Stein, Bengt
    • F41F17/02
    • F16L9/14B29C63/0021B29C63/28B29L2031/75F41A21/02
    • A method for the manufacture for the tubes or shafts of a composite material and having a low weight, whereby a blank of a material that can be pressformed and which has a substantially even thickness of material is subjected to isostatic pressing on or in a formation tool thereby providing a shell or a liner (15) of an intended shape and profile and having a mainly by substantially thickness of material, and on or in said shell or liner (15) another material is applied and is bound, for instance a highstrength material like glassfiber, carbon fiber or aramide fiber, so that the liner (15) and said other material (17) provide a solid integral composite tube or composite shaft. A tube made according to the method can be a barrel, whereby the liner (15) preferably has a conically shaped charged space and is formed with riffels in the race, which rifels have a progressively increased pitch in the direction towards the outer end of the barrel, and whereby the lower rifel portions on the outside of the liner (15) portions are filled withs another material, and the liner is completely covered with preferably highstrength material having a low density, whereby the liner (15) and the other material or materials provide solid integral unit. Correspondingly a shaft can be formed with outer shaft shell of a material that can be pressformed and an inner filler material of a preferably highstrength material having a low density.