Fuse assembly

A percussion-type fuse assembly comprising a generally cylindrical housing containing an axial opening and at one end a diametrical slot, a slider bar slidably supported in the slot, said slider bar containing a first opening in alignment with said opening in the housing and second opening radially thereof, a detonator in the second opening, a firing pin mounted in the housing with an end engaged with the first opening, said firing pin normally constraining diametrical movement of the slider bar, a weight disposed about the firing pin and movable relative thereto, said weight supporting the firing pin for retraction relative to said weight and from said first opening in the slider bar in response to rotation of the housing at a predetermined rate of rotation to release the slider bar, said weight being movable relative to the firing pin upon impact to impel the firing pin into engagement with the detonator, a cap in the form of a drogue mounted to the housing, a tether attaching the cap to the firing pin, said cap being displaceable rearwardly relative to the housing to constrain movement of the firing pin relative to the housing prior to impact, said tether being housed within the cap so long as the latter remains engaged with the housing and a keeper operable to hold the cap engaged with the housing, said keeper being manually removable to free the cap prior to use.