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This invention relates to apparatus adapted to feed liquids by gas pressure. One important use of my invention is in connection with rocket craft or other air-craft in which two liquids, such as gasoline and liquid oxygen, are to be fed at high pressure to a combustion chamber. It is the general object of my invention to provide improved liquid-feeding apparatus for such use and for other similar purposes, which is apparatus is extremely light in weight and which will supply two or more different liquids under pressure in a safe and reliable manner. I further provide improved means by which a substantially constant gas pressure may be maintained as the tanks are gradually emptied. More specifically, my invention relates to the provision of liquid feeding apparatus comprising a light but strong and rigid outer metal casing and a plurality of flexible and collapsible inner tanks which are enclosed by said outer casing and which are adapted to store and deliver different kinds of liquids, such as gasoline and liquid oxygen. I also provide means for ejecting the liquids from the inner tanks by gas pressure exerted on the outside of said tanks, which gas pressure may be much higher than could be previously used in direct contact with cold liquids. Another feature of the invention relates to means for precooling the oxygen tank and its connections before the tanks are filled.
liquid feeding apparatus, feeding liquids by gas pressure, combustion
Aerospace Engineering | Heat Transfer, Combustion | Propulsion and Power
Goddard, Robert, "Liquid Feeding Apparatus" (1946). WPI Patents Collection. 69.