Classified

Abstract

A munition includes a winding the configuration of which is changed as the munition detonates. The coil is seeded with a current and as the configuration of the winding changes a large em pulse is generated. Detection of the pulse can indicate whether or not the explosion is satisfactory and that the target is this destroyed. This avoids having to unnecessarily attack the target again.

1 . Apparatus for producing an indication of the detonation of a munition comprising a winding for, in use, carrying a current which winding being arranged to change configuration by the detonation of the munition thus causing a variation in the field produced by the current and to produce thereby the indication, wherein at least one resultant impulse is modulated to indicate at least one other mission parameter. 
   
   
       2 . Apparatus as claimed in  claim 1  wherein the configuration of the winding is one in which the number of electrically distinct windings is varied. 
   
   
       3 . Apparatus as claimed in  claim 2  wherein windings are shorted to change the configuration. 
   
   
       4 . Apparatus as claimed in  claim 3  wherein an armature is driven into contact with the winding by the detonation of the munition to change the configuration of the winding by shorting at least some of the windings. 
   
   
       5 . Apparatus as claimed in  claim 4  wherein the armature is arranged about an explosive core to be driven thereby into contact with the winding. 
   
   
       6 . Apparatus as claimed in  claim 5  wherein the winding, a stator and the explosive are co-axial. 
   
   
       7 . Apparatus as claimed in  claim 6  wherein the armature and the winding are maintained apart at least in part by an electrically insulting material. 
   
   
       8 . Apparatus as claimed in  claim 1  comprising a detector for detecting the occurrence of an electromagnetic pules produced in use by the winding. 
   
   
       9 . Apparatus as claimed in  claim 8  wherein the detector determines the occurrence of satisfactory detonation of the munition by reference to the characteristics of the pulse. 
   
   
       10 . Apparatus as claimed in  claim 9  wherein the characteristics include magnitude. 
   
   
       11 . Apparatus as claimed in  claim 8  wherein the detector is located at an aircraft. 
   
   
       12 . (canceled) 
   
   
       13 . A munition including apparatus as claimed in any one of  claims 1  to  7 . 
   
   
       14 . An aircraft including apparatus as claimed in  claim 1 . 
   
   
       15 . A method for producing an indication of the detonation of a munition comprising providing a winding the configuration of which is varied by detonation of the munition; providing a current in the winding and detecting an electromagnetic pulse produced by the winding as its configuration varies; and modulating at least one resultant impulse to indicate at least one other mission parameter. 
   
   
       16 . A method as claimed in  claim 15  wherein a characteristic of the pulse is used to determine where a detonation criterion has been met. 
   
   
       17 . A method as claimed in  claim 16  wherein the characteristic includes the magnitude of the pulse. 
   
   
       18 . (canceled)