Abstract: An apparatus for setting a time fuse in a projectile, with the muzzle velocity of the projectile being measured and its delay being corrected by the value measured for the muzzle velocity. To determine the muzzle velocity of the projectile, the latter is provided with a magnetic field sensor and the gun barrel is provided with two magnetic axially spaced field generators adjacent its muzzle. The magnetic field sensor is connected, via an amplifier, to a start/stop counter which starts counting clock pulses when the projectile flies past a first of the magnetic field generators and stops counting clock pulses when the projectile flies past the other of the two magnetic field generators to provide a final count which is a measure of the projectile muzzle velocity. The final count of the start/stop counter is then used to adjust the counter clock pulse frequency which is then used by further circuitry, e.g. a preset backward counter, to provide the delay for the fuze.

Abstract: A method and an apparatus for measuring a flight path parameter of a projectile (7) or parts thereof during flight possibly into the region of the target, with the electrical charge imparted to the projectile (7) or its part by friction with the air and/or by the gas fumes generated during ignition or detonation being detected by means of at least one inductively operating sensor (1) and the zero passage of the resulting signal is evaluated. The resulting signal can be utilized to measure time of flight, velocity, a time pattern for the distribution of fragments or the like.