Abstract: Modular Structures preferably usable to form human habitations in outer space are fabricated by molding. A mold comprising progressively surrounding flexible walls defines progressively surrounding cavities. A selected cavity or cavities are inflated or pressurized, as with gas, to distend to assume a predetermined configuration. Another selected cavity or cavities are injected with mold material, which is then allowed to harden. A pressurized cavity or cavities may be evacuated and then filled with mold material. In this manner, a strong structure is progressively formed is subsequent injection and hardening steps. In alternative embodiments of the molding method, supports or reinforcing members are placed within cavities prior to inflation and material injection. These supports space apart adjacent flexible mold walls and force the flexible walls to assume a desired configuration under inflated conditions.

Abstract: The present invention pertains to the construction of modular structures used as a building blocks to create an habitation or integrated structures which form habitations. In both cases flexible molds are injected with mold materials to form the final structure created. An outer cavity of the mold is first inflated to create either a finalized shape of the structure or a partial shape for the structure. If internal constraints of the innermost cavity are already included, a finalized structural shape is obtained. If internal constraints for the innermost cavity have to be added, the final shaped is obtain after those constraints are placed within the innermost cavity.