Technology: On Limbs of Steel

When they built their strange-looking vehicle five years ago, engineers at Aerojet's Space-General Corp. in California were aiming for space. Their Moon Walker had six legs, stereo TV for eyes, and was crammed full of detection and communications equipment. It was designed to land on the moon with a Surveyor spacecraft.

The Moon Walker was rejected by NASA, but it was not discarded by Aerojet. Rebuilt in a modified version, it has become the prototype of an eight-legged, walking wheelchair now being evaluated by the University of California at Los Angeles for the use of handicapped children. The boxy gadget...

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