1. Systems Analysis Branch, NASA Ames Research Center, Moffett Field, California 94035
2. Daniel Guggenheim School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0150
3. Exploration Systems Engineering Branch, NASA Langley Research Center, Hampton, Virginia 23681
4. Entry, Decent, and Landing Systems and Advanced Technologies Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109