Abstract: A continuous wave frequency modulated ranging system for measuring the dince between the system and a reflecting body. The system generates certain functions of the Doppler signal envelope which have readily identifiable characteristics at specified ranges. This information is used with the amplitude of the received CW-FM signal to determine first by amplitude that the missile is at the approximate desired height, and then to determine by the generated functions the point of burst of the projectile.

Abstract: A thin film magnetometer is disclosed, adapted to detect changes in the eh's magnetic field, but which is insensitive to apparent changes in the field as result from spin of the magnetometer relative to the field. Insensitivity to spin is obtained by forming the thin film sensor as a loop having a plane of symmetry in which the axis of spin lies.

Abstract: 1. In an ordnance projectile having a side-spray warhead with a static frentation velocity V.sub.FS, an ordnance fuze comprising: radar means for making measurements of range and sight angle of a target; sources of fixed voltages proportional to predetermined target coordinates Z.sub.1, Z.sub.2, and Z.sub.3, in a coordinate system that rides with the fuze, the fuze trajectory being in the plus-Z direction; means for obtaining three voltages proportional to r.sub.1, r.sub.2, and r.sub.3, where r.sub.1, r.sub.2, and r.sub.3 are the fuze-to-target distances when the target Z-coordinates are Z.sub.1, Z.sub.2, and Z.sub.3 respectively; means for obtaining a voltage proportional to V.sub.Z, where V.sub.Z is the rate of change of the Z-coordinate of the target with time; a source of fixed voltage proportional to said static fragmentation velocity V.sub.FS ; electronic computer means for solving the equation.DELTA.T=Z.sub.3 /V.sub.Z -r.sub.4 /V.sub.FS,wherer.sub.4 =.sqroot.A.sup.2 r.sub.1.sup.2 -B.sup.2 r.sub.2.sup.

Abstract: An inductance fuze for armor defeating shells and missiles that utilizes ped neutralization, i.e., cancellation of an AC voltage, induced by a primary coil in a sensing coil under free-space conditions, by an equal and opposite voltage. The lumped neutralizing voltage is obtained from a neutralizing coil that is also coupled to the primary. Adjustment of neutralization is made by translating axially either the sensing coil, the neutralizing coil or both relative to the primary coil. The physical configurations of the coils can be adjusted to be accommodated within the fuze ogive as long as a certain relationship involving the number of turns and the flux amplitudes is maintained.

Abstract: 4. In a projectile comprising a casing having a first electrically conducg part, a second electrically conducting part and an electrically insulating part interposed between said first and second conducting part, a proximity detector comprising:(a) a bridge circuit;(b) said bridge circuit having a first terminal connected to said first electrically conducting part of said projectile casing; and(c) said bridge circuit having a second terminal adjacent to said first terminal and connected to said second electrically conducting part of said projectile casing.

Abstract: 1. An ordnance fuze adapted to function at a predetermined time interval in dvance of predicted missile-target intercept, said fuze comprising: means for sensing missile-to-target distance; means for initiating the generation of a first waveform voltage when the missile reaches a first predetermined distance from the target; means for initiating the generation of a second waveform voltage when the missile reaches a second and shorter predetermined distance from the target; comparator means for comparing two voltages and producing a comparator output signal when the two voltages being compared become equal; a source of constant direct-current offset voltage interposed between one of said first and second waveform voltages and said comparator means; means for applying the other of said first and second waveform voltages to said comparator means; and means for utilizing said output signal from said comparator means to function the fuze.