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Launch Vehicle Manual Steering with Adaptive Augmenting Control:In-Flight Evaluations of Adverse Interactions Using a Piloted AircraftAn Adaptive Augmenting Control (AAC) algorithm for the Space Launch System (SLS) has been developed at the Marshall Space Flight Center (MSFC) as part of the launch vehicle's baseline flight control system. A prototype version of the SLS flight control software was hosted on a piloted aircraft at the Armstrong Flight Research Center to demonstrate the adaptive controller on a full-scale realistic application in a relevant flight environment. Concerns regarding adverse interactions between the adaptive controller and a potential manual steering mode were also investigated by giving the pilot trajectory deviation cues and pitch rate command authority, which is the subject of this paper. Two NASA research pilots flew a total of 25 constant pitch rate trajectories using a prototype manual steering mode with and without adaptive control, evaluating six different nominal and off-nominal test case scenarios. Pilot comments and PIO ratings were given following each trajectory and correlated with aircraft state data and internal controller signals post-flight.
Document ID
20150000843
Acquisition Source
Armstrong Flight Research Center
Document Type
Conference Paper
Authors
Hanson, Curt
(NASA Armstrong Flight Research Center Edwards, CA, United States)
Miller, Chris
(NASA Armstrong Flight Research Center Edwards, CA, United States)
Wall, John H.
(Dynamic Concepts, Inc. Huntsville, AL, United States)
VanZwieten, Tannen S.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Gilligan, Eric T.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Orr, Jeb S.
(Draper (Charles Stark) Lab., Inc. Huntsville, AL, United States)
Date Acquired
January 29, 2015
Publication Date
January 5, 2015
Subject Category
Cybernetics, Artificial Intelligence And Robotics
Report/Patent Number
DFRC-E-DAA-TN19086
Meeting Information
Meeting: SciTech 2015
Location: Kissimmee, FL
Country: United States
Start Date: January 5, 2015
End Date: January 9, 2015
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNM12AA41C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
adaptive control
manual steering mode
pilot in the loop oscillation
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