초록 ▼

A fuel tank has an outlet fuel line with a valve adjacent the tank. The valve is air operated open and spring biased toward closed. A frangible envelope surrounds the fuel tank and is pressurized from the same air line as that to the valve so loss of air pressure in the envelope leads to closing of

A fuel tank has an outlet fuel line with a valve adjacent the tank. The valve is air operated open and spring biased toward closed. A frangible envelope surrounds the fuel tank and is pressurized from the same air line as that to the valve so loss of air pressure in the envelope leads to closing of the valve in case of a crash situation that causes the envelope to rupture.

대표청구항 ▼

[ The invention claimed is:] [1.] In an aircraft fuel system, the improvement comprising:a fuel tank having an envelope surrounding the tank, and said envelope being in communication with a source of gas under pressure,a fuel line for providing fuel from the tank to an aircraft engine,a valve locate

[ The invention claimed is:] [1.] In an aircraft fuel system, the improvement comprising:a fuel tank having an envelope surrounding the tank, and said envelope being in communication with a source of gas under pressure,a fuel line for providing fuel from the tank to an aircraft engine,a valve located adjacent the fuel tank for selectively interrupting the fuel flow from the tank into said fuel line, said valve being normally closed, and said valve being opened in response to a gas under pressure supplied to said valve,a source of gas under pressure provided both to said envelope and to said valve, whereby loss of gas pressure in said envelope results in closing of the valve and isolation of the fuel in the tank from said fuel line.