초록 ▼

A retention and deployment mechanism for pivotable guide fins on bombs or missiles includes a cup shaped yoke slidably mounted on a shaft. The device is mounted in a central region of the bomb tail and engages tabs on each of the fins. The tabs are held between a retaining flange and pusher arms ext

A retention and deployment mechanism for pivotable guide fins on bombs or missiles includes a cup shaped yoke slidably mounted on a shaft. The device is mounted in a central region of the bomb tail and engages tabs on each of the fins. The tabs are held between a retaining flange and pusher arms extending radially from the yoke. The retaining flange prevents pivoting of the fins until desired. A drive spring causes the yoke to slide axially, and the pusher arms push on the fins to cause pivoting to the deployed position. The yoke includes a head end with a cone shaped recess. Four balls seated in holes in the shaft contact the cone shaped recess to prevent movement of the yoke. A pin disposed in a bore in the shaft hold the balls in the seats. The pin includes a groove, and is movable by a spring to a position where the balls fall into the groove, thus releasing the yoke. A lanyard is attached to the aircraft and extends through aligned holes in the shaft and pin to retain the pin in position. When the bomb is released from the aircraft, the lanyard is pulled from the holes, releasing the pin.

대표청구항 ▼

[ What is claimed is:] [12.]12. A pivotable tail fin deploying apparatus for a bomb, comprising:a plurality of tails fins mounted by pivots to a bomb assembly, the tail fins having a stowed position generally axially aligned with a bomb casing and a deployed position extending laterally from the bom

[ What is claimed is:] [12.]12. A pivotable tail fin deploying apparatus for a bomb, comprising:a plurality of tails fins mounted by pivots to a bomb assembly, the tail fins having a stowed position generally axially aligned with a bomb casing and a deployed position extending laterally from the bomb casing, each fin having an edge that is inwardly facing in the stowed position, each edge including a tab;a yoke mounted on a shaft for sliding relative to the pivots, the yoke having a first position for retaining the fins in the stowed position and a second position for deploying the fins, the yoke engaging the tabs of the fins in the stowed position;a spring for driving the yoke from the first position to the second position;retaining means for retaining the yoke in the first position against force of the spring; anda deformable washer mounted on the shaft at an end of a yoke travel path to absorb impact forces and stop the yoke.