AIR CANNON APPARATUS AND METHOD

摘要

An air cannon (10) for projecting a coherent mass of air in a targeted direction. The air cannon has a membrane (30) inside a frastosonical shell (20) that is placed under tension and released suddenly to force air out the small diameter end of the cannon past a lip. The cannon can have a port for injecting a scent, smoke or fog into the cannon for delivery as a coherent mass with the air. The mass of air remains coherent a relatively long distance so that the air, scent, smoke or fog is experienced by a person located at the target location.