|Dr. Greschik, the President of TentGuild Engineering Co., Boulder, CO, is an advanced concepts consultant for L.Garde. He has worked extensively on a number of projects for L.Garde since the 1990's both as a designer and as an analyst. His contributions to company projects include innovative space structural architectures, novel design techniques and software, numerical methodology, as well as symbolic and numerical analysis work. He invented the cord-based design architecture used in the family of L.Garde solar sails and developed the methodology for its design. He was instrumental in the concept design and analysis of a number of large precision space applications including space-borne radar and optical systems. He has also played a pivotal role in the solution of numerous other structural challenges related to deployable mechanisms, inflatable and stretched thin film and fabric structures, and pre-stressed solutions.