Precision Container Aerial Delivery System

Abstract

An aerial fire suppressant delivery system uses an outer box or like structure and an inner liner. The inner liner may be a polyurethane bladder with two or more plastic straps RF welded to the polyurethane bladder. The two or more plastic straps are attached both to the bottom surface of the bladder and to the top of the outer box, which is not attached to the sides of the outer box. A fixed or rotary wing aircraft drops the container filled with fire suppressant material. As the container falls, the top of the box flies from the sides of box and the top pulls against the straps. Because the straps are attached to the bladder by RF welding, the straps tear the bladder at their attachments and cause the bladder and container to release the fire suppressant material into the air over the target.

1 . An aerial material delivery method of a type appropriate for delivering fire suppressant materials from aircraft, the aerial material delivery method comprising forming a bladder that can act as a liner within an outer container that comes apart when the outer container is dropped from the aircraft, the method of forming the bladder comprising:
 RF welding at least one plastic strap to a lower plastic sheet to form a weld between the at least one plastic strap and the lower plastic sheet; and   attaching a top plastic sheet to the lower plastic sheet and further processing to form a sealable bladder, wherein the weld is characterized by causing the sealable bladder to rupture in response to a predetermined force.   
   
   
       2 . The aerial material delivery method of  claim 1 , further comprising providing a sealable fitting within the top sheet prior to attaching the top plastic sheet to the lower plastic sheet. 
   
   
       3 . The aerial material delivery method of  claim 2 , further comprising leak testing a sealed bladder. 
   
   
       4 . The aerial material delivery method of  claim 2 , further comprising filling the sealable bladder with fire suppressant materials. 
   
   
       5 . The aerial delivery method of  claim 2 , wherein the predetermined force is that applied when the weld is exposed by an outer container when the outer container is dropped from an aircraft.