Guidance and dispersion studies of National Launch System ascent trajectoriesThe National Launch System (NLS) is a joint concept, between DoD and NASA, for building a family of new launch vehicles. Two of the many choices to be made are the trajectory shaping methods and the onboard guidance scheme. This paper presents results from some ongoing studies to address these issues. First, potential gains from new guidance concepts are listed. Next the paper gives a list of possible discriminators between different guidance schemes, lists a number of potential guidance schemes, and explains two in some detail. A reference scheme is tested to determine its performance versus the discriminators. Finally, results from some special studies using the reference guidance scheme are given, including the effects of closed-loop guidance initiation time, time of enforcement of sideslip, vehicle roll for engine out, time and location of an engine out, use of load relief control, and use of day of launch wind biasing.
Document ID
19920072530
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hanson, John M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Shrader, M. W. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Chang, Hopen (NASA Marshall Space Flight Center Huntsville, AL, United States)
Freeman, Scott E. (Sverdrup Technology, Inc. Huntsville, AL, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Launch Vehicles And Space Vehicles
Report/Patent Number
AIAA PAPER 92-4306
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference