A structural component is provided comprising a base member comprising at least two sidewalls and a space therebetween, the base member having a predetermined curvilinear configuration formed using hot stretch forming. The structural component comprises at least one reinforcing member linear friction welded to the at least two sidewalls so that the reinforcing member is positioned at least partially within the space between the at least two sidewalls.

A drive assembly for a slide out in an expandable enclosure, the drive assembly comprising a beam attachable to the slide out, the beam having a first row of teeth and a second row of teeth thereon, the first row of teeth and the second row of teeth extending parallel to each other on opposite sides of the beam wherein the teeth in the first row of teeth are offset relative to the teeth in the second row of teeth and a drive gear having a first gear wheel engagable with the first row of teeth and a second gear wheel engagable with the second row of teeth, and an actuator coupled to the beam to selectively extend and retract the beam.

A structural system and method of assembly comprising structural members with slots, and interior structural members. Specific structural members are sequentially interconnected in rigid alignment. A first structural member is positioned with two upward facing slots. Additional structural members are added by engaging downward facing slots of the additional structure members with upward facing slots of the prior structural member. The structural members further include engagement features in cooperating slots. A protruding features engages a recess to retain the engaged structural members. The features may be a partial sphere and a matching recess which may be disassembly, or a tapered protrusion having a squared-off rear edge which resists disassembly, or one of a variety of shapes.

A method and system for forming a honeycomb panel structure. The method includes the steps of compressing the honeycomb panel structure in a first panel region and reinforcing the first panel region. Reinforcing the first panel region may include the steps of drilling a plurality of holes in the first panel region; inserting pins into the first panel region; and welding pins into a face sheet of the honeycomb panel structure. Alternatively, the step of reinforcing the first panel region may include the step of adding an additional face sheet to the honeycomb panel structure.