1. Department of Mechanical, Aerospace & Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
2. Department of Mechanical and Aerospace Engineering and Space Systems Academic Group, Naval Postgraduate School, Monterey, CA 93943-5100, USA
3. Dipartimento di Ingegneria Aerospaziale e Astronautica, Scuola di Ingegneria Aerospaziale, Universitá di Roma “La Sapienza”, 00138 Roma, Italy
4. Department of Mechanical and Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93943-5100, USA
5. Department of Applied Mathematics and Statistics, University of California, Santa Cruz, CA 95064, USA