Abstract: A former for an aircraft fuselage is disclosed. An example former has a first face and a second face. Each of the faces is shaped as a component of the aircraft fuselage. The example former has a cellular structure between the first face and the second face. The cellular structure has a low density of wall material relative to density of a solid former, and can withstand high out-of-plane compression and out-of-plane shear forces. An adhesive attaches the first face to a first side of the cellular structure, and the second face to a second side of the cellular structure. The edge of the former may support a skin of the aircraft fuselage.

Abstract: In a preferred embodiment, a tab-fuse for connecting two adjacent cells in a multicell battery, which includes: a metallic member having a base portion for attachment to the positive end of one of the adjacent cells and a tab portion which is bendable for attachment of the distal end thereof to the negative end of the other of the adjacent cells; and the base portion and the proximal end of the tab portion being joined by a relatively narrow portion of selected width, such that the narrow portion serves as a fusible link for overcurrent protection.