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Space frame: The vehicle has a skeletal frame constructed of steel beams or tubes of varying diameter and wall thickness. Non-structural panels are attached to the frame solely for aerodynamic purposes but otherwise provide no additional strength. This design is used on some high-performance consumer cars and smaller, older aircraft. The strict technical definition for a space frame is requires that the frame is sufficient be sufficiently triangulated such that all forces within the frame are turned into compression or tension, and not flexing.
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