FUZE FOR SMALL-SIZE ANTIAIRCRAFT GUIDED ROCKET Russian patent published in 2002 - IPC

FIELD: military equipment, specifically, fuzes for small-size antiaircraft guided rockets designed to hit air targets which are thin-wall structures. SUBSTANCE: given fuze for small-size antiaircraft guided rocket incorporates system comprising noncontact and contact magnetoelectric target sensors with signal processing circuit and initiation circuit. In contrast to prototype it carries eddy-current pickup including permanent magnet of tubular, cylindrical shape, magnetized along longitudinal symmetry axis and arranged coaxially on outer surface of fuze and induction coil placed coaxially on outer side surface of permanent magnet. Parameters of magnet and coil are specified by following relations: h ≤ 40δ²V; b = E_nδ²(WB_mD)^-1, where h is magnet height, m; b is magnet thickness, m; δ is minimal thickness of anticipated air target, m; V is target impact velocity, m/s; E_n is initiation voltage of amplification circuit, V; W is number of turns in coil; B_m is magnetic induction in magnet body, T; D is outer diameter of fuze, m. Magnetoelectric sensor of wave type is employed as contact sensor which initiation circuit is inserted with delay former of blast pulses of pyrotechnical type, for instance. Contact sensor is made fast to internal face wall of fuze body on side of rocket war head. EFFECT: enhanced efficiency and reliability of destruction of thin-wall air targets thanks to blast of rocket war head inside obstacle. 2 dwg