Simulink Control Design™ - MathWorks

Trimming and Linearization of the HL-20 Airframe

This is Part 1 of a five-part example series on design and tuning of the flight control

system for the HL-20 vehicle. This part deals with trimming and linearization of the

airframe.

HL-20 Model

The HL-20 model is adapted from the model described in “NASA HL-20 Lifting Body

Airframe” (Aerospace Blockset). This is a 6-DOF model of the vehicle during the final

descent and landing phase of the flight. No thrust is used during this phase and the

airframe is gliding to the landing strip.

open_system('csthl20_trim')

11 Gain-Scheduled Controllers