Patent ID: 8820359

Claim:
An apparatus for containing fluids and gases comprising: a spacecraft propulsion system in the form of a solid monolithic device comprising: a plurality of patterned layers of a rapid prototyping material comprising: a first patterned layer of the material; one or more additional patterned layers of the material, wherein each additional patterned layer of the material is deposited on and attached to a previously deposited patterned layer of the material and cured, and wherein each cured patterned layer of the material forms a seamless interface without the use of bonds, welds, or adhesives, the seamless interface having no seam between the additional patterned layer of the material and the previously deposited patterned layer of the material, wherein each patterned layer is made from the same material; one or more cavities disposed within the monolithic device as a result of patterning associated with one or more of the plurality of patterned layers; and wherein at least one of the cavities comprises a storage tank encapsulated within the monolithic device.