Aerospace methodology applied to development of an advanced powered mobility system

NASA investigated the use of an advanced power train for use in a powered wheel chair and patient support systems to accommodate a wide range of patient trauma. The author discusses how the use of aerospace technology to replace the automotive electric storage battery with a small, lightweight and rugged power unit resulted in a design concept which has surplus hydraulic power to erect the occupant to an upright position, to climb stairs or ramps, operate a small robotic arm and energize a lumbar massage and ripple cushion. The approach differs from conventional engineering in that it emphasizes the full use of material and component capabilities by pushing the state of the art to the limit. A system approach is used to satisfy the operational requirements. There is emphasis on systems assurance, including reliability, safety, maintainability and life-cycle costs. Human engineering aspects are integrated in the design.<>