A flash-bang projectile that generates one or more noise pulses and one or
more flashes of light. In generating a noise pulse, the flash-bang
projectile provides a housing that includes a gas chamber that entraps
air. The gas chamber includes a compression device that, when the
flash-bang projectile is shot or otherwise ejected by a gun or other form
of ejection device, compresses the air that is entrapped in the gas
chamber. A burst disk forms one wall of the gas chamber and is configured
to rupture a selected time delay after the air has been compressed.
Rupturing of the burst disk releases the compressed air entrapped in the
gas chamber, allowing the air to be released through a horn nozzle,
thereby generating a noise pulse. The flash-bang projectile may have more
than one gas chambers, with associated compression devices, whose burst
disks are configured to rupture with diverse time delays, in which case
the flash-bang projectile can generate multiple noise pulses with
corresponding delays. In generating a light flash, the flash-bang
projectile includes one or more light generating devices, which may
include items such as flash lamps, light-emitting devices, and the like,
along with a control module for powering the light generating devices.
The control module includes an electrical generating arrangement that
uses a portion of the kinetic energy imparted to the flash-bang
projectile when it is ejected to generate electrical energy. The
electrical energy is, in turn, used to power the light generating
devices. Electrical traces on the burst disks are broken when the burst
disks rupture to facilitate synchronization of the light flashes with the
noise pulses.