https://www.mathworks.com/help/slcontrol/ug/HL20MatlabWorkflowExample.html
MATLAB Workflow for Tuning the HL-20 Autopilot - MATLAB & Simulink
Design a gain-scheduled control system for the HL-20 airframe in MATLAB.
hl 20matlabworkflowtuningautopilot
https://www.mathworks.com/help/slcontrol/ug/HL20AttitudeControlMIMOExample.html
Attitude Control in the HL-20 Autopilot - MIMO Design - MATLAB & Simulink
Tune a gain-scheduled MIMO architecture for controlling roll, pitch, and yaw of the airframe.
attitude controlin thehl 20
https://www.space.com/20529-space-history-photo-nasa-hl-20-lifting-body.html
Space History Photo: NASA HL-20 Lifting Body | Space
Apr 5, 2013 - This non-flying, full-scale mockup of the HL-20 lifting body was used for various tests of maintainability and human factors considerations.
nasa hl 20space historyphotoliftingbody
https://www.mathworks.com/help/control/ug/HL20TrimLinearizeExample.html
Trimming and Linearization of the HL-20 Airframe - MATLAB & Simulink
Linearize an airframe model at an array of design points to use for gain-scheduled control design.
of thehl 20trimminglinearizationairframe