A remotely selectable proximity-or-impact fuze lets one aerial munition adapt in flight to soft or hard targets before release.
A spring-loaded striker and mechanical delay mechanism enable compact inertial ignition under low-g, long-duration firing while resisting accidental shocks.
An HF or infrared transceiver integrates with the bomb fuze initiator to sense ground distance without separate proximity-sensor hardware.
An accelerometer-triggered remote initiator uses pre-pairing and secure RF commands for controlled stand-off detonation in challenging conditions.
A sensor, Kalman filter, Lyapunov function, and comparator predict threshold approaches for timely safety control actuation.
Preloaded springs help compact inertial igniters detect low-G firing without drop activation.
A degradable retention mechanism chemically reacts with well fluid to free a firing pin and strike a percussion detonator.
Replacing electrical connections with mechanical impact ignition and sequential delay fuses resolves signal transmission complexity in well perforation.
Dual pyrotechnic delay elements trigger gas pressure to open shut-off valves for detonator activation.
A compact safety ignition device integrates primary and secondary circuit units within a single housing to ensure reliable ignition signals.
Segmenting the mechanism into two independent locks balances rotational forces, preventing premature arming and ensuring safe self-destruction.
Controllable deconfinement device releases explosive charge via pressure or temperature activation, preventing unintended detonation and collateral damage.
Mn-Zn ferrite cores generate eddy current signals to calculate flight speed, reducing power consumption and magnetic interference.
A pyrotechnic delay device uses a bypass element with a high-burning-rate transfer charge to enable adjustable timing within a single unit.
Centrifugal force drives an unbalanced rotor to retract a lockpin, arming the projectile only after second-stage ignition.