TY - RPRT TI - Closed Loop Guidance Trade Study for Space Launch System Block-1B Vehicle AU - Von der Porten, Paul AU - Ahmad, Naeem AU - Hawkins, Matt AU - Robin, Pinson AU - Dukeman, Greg AU - Fill, Thomas PY - 2018 UR - https://ntrs.nasa.gov/citations/20180006364 ID - 20180006364 ER -