Attitude Control Schemes for Crew Module Atmospheric Re-entry Experiment Mission

A Robust Control Algorithm of a Descent Vehicle Angular Motion in the Earth’s Atmosphere

“…e 1 = 1 0 0 T ; q(t) > 0 -scaled value of the velocity head; ā4,2 > 0, ā5,2 > 0, ā6,3 > 0constant of linearization of the scaled aerodynamic moment. The static addition u 0 in the control law (5) for the simplified model instead of formula (11), is calculated in a simplified way: u 0 = u − 0 , using formulas ( 6) and (7). Since the coefficients ā4,2 , ā5,2 , ā6,3 , and q(t) are stochastic and difficult to determine, the problem arises for object (9) 5) with a stationary matrix F independent of the matrix components A, which nevertheless ensures that condition ( 10) is satisfied.…”

“…The works consider both uncontrolled movements (disturbed rotations in rarefied atmosphere [6], the search for stability conditions [6], predict resonance [7]), and trajectory following [8] and orientation of suborbital ships [9,10], reusable launch vehicles [11], Earth landers [12,13], Martian scientific laboratories [14,15]. The applied management methods differ significantly from each other.…”

“…The applied management methods differ significantly from each other. These are pulse modulation [11], and sliding mode control [12], and control with forward and feedback [15,16].…”