; Annual Technical Report to DARPA December 1, 1980 - September 30, 1981 Dynamically Stable Legged Locomotion Researc h Marc H. Raibert (Principal Investigator ) H. Benjamin Brown, Jr. Michael Chepponi s Eugene Hastings Steven E. Shreve Francis C. Wimberly 30 October 1981 Sponsored by Defense Advanced Research Projects Agency (Dol)~, Systems Sciences Office, ARPA Order No. 4148 under contract number MDA9O3-8FCO13O issued by Department of Army, Defense Supply Service -Washington, Washington, DC 20310. Effective date of contract December 1, 1980. Expiration date of contract September 30, 1981. 0 The views, opinions, and findings contained - in this report are those of the authors and should not be construed as an official Department of Defense position, policy, or decision, unless so designated by other official documentation. 0