MISSILE FOLDING STABILISER FIN Russian patent published in 2009 - IPC F42B15/00 F42B10/14 

FIELD: ammunition.

SUBSTANCE: invention relates to ammunition, particularly to guided missiles, namely to folding stabiliser fin. Proposed folding stabiliser fin comprises its root part attached to the drive output shaft and its rotary part with tapered ledges and stabiliser fin opening mechanism. The latter incorporates spring-loaded pushrod fitted in the drive output shaft. Aforesaid rotary part is seats on two semi-axles fitted in the stabiliser fit root part both sides, perpendicular to the said shaft. Note that there is a blunt cutout made along the drive output shaft lengthwise axis, in previously mentioned rotary part. Pushrod is forced by springs to move outwards and along the drive shaft axis. The pushrod outer end face features a tapered slot oriented along the missile lengthwise axis. A plate to interact with the said rotary part is fitted right across the pushrod face tapered slot.

EFFECT: higher stiffness of stabiliser fin, reduced as-folded dimensions.

3 cl, 2 dwg