Damage Effect of Thermobaric Warhead with Reactive Casing on Phased-array Radar Antenna
The power of a warhead composed of reactive shell and thermobaric explosive and its damage effects on phased-array radar antenna are studied to enhance the destructive effects and provide support for the design of relevant warheads.Two kinds of thermobaric warheads with reactive casing and 20 steel casing,which have the same size,are designed.Damage effect tests are conducted on a simulated phased-array radar antenna target.The fireball temperature,shock wave,and target dielectric rod damage ratio are test and analyzed.The following findings were observed through a comparative analysis:For warheads with the same size and explosive charge,the warhead with reactive casing exhibits a 14.90%increase in the maximum temperature and a 20%-50%increase in the area of fireball above 500℃,as compared to the warhead with steel casing.Additionally,the specific impulse of warhead with reactive casing is always higher than that of warhead with steel casing,resulting in a 15.5%increase in the level of damage to a target at a distance of 8 m.Thermobaric warheads can cause damage to a target through natural fragments and shock waves.The shock wave can induce a widespread disintegration of the dielectric rods.And the linear relationship between specific impulse and the damage degree of target is significant.Specific impulse can be used as a criterion parameter to judge the damage of phased array radar antenna.It can be seen from the test analysis that the specific impulse of shock wave should exceed 142.5 Pa·s in order to achieve damage to more than 54.8%of the arrayed units.
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