The subject of optimal control is researched during the insertion of the space vehicle into the orbit of Mars artificial satellite with the preliminary aerodynamic braking in the atmosphere. The space vehicle control methodology of roll angle and angle of attack is elaborated. Variational problems are solved for minimization of necessary power inputs and maximization of space vehicle re-entry c...

Aerodynamic Thrust Vectoring for Attitude Control of a Vertically Thrusting Jet Engine

Anonlinearadaptive  ight control system is proposed using a backstepping and neural networks controller. The backstepping controller is used to stabilize all state variables simultaneouslywithout the two-timescale assumption that separates the fast dynamics, involvingthe angularrates of the aircraft, from the slow dynamics,which includes angle of attack, sideslip angle, and bank angle. It is a...

As aircraft wings become much more flexible due to the use of light-weight composites material, adverse aerodynamics at off-design performance can result from changes in wing shapes due to aeroelastic deflections. Increased drag, hence more fuel burn, is a potential consequence. Without means for aeroelastic compensation, the benefit of weight reduction from the use of light-weight material cou...

This paper presents a time-accurate procedure for computing unsteady aerodynamic forces on wings with a full-span oscillating control surface by using sheared grids. In this procedure, the flow is computed by solving the unsteady Reynolds-Averaged Navier-Stokes (RANS) equations in conjunction with the one-equation Spalart-Allmaras turbulence model. A module to model control surface oscillations...

Abstract-An extended Kalman filter for estimating the states and parameters of a target vehicle undergoing complex motions for use with an integrated guidance-control law is presented. Nonlinear point-mass model of the target including gravitational and aerodynamic forces are considered in the formulation. Target motions are modeled by a second-order oscillatory dynamic system modulating the ae...

This work proposes a feedback control strategy to let the dynamics of an underactuated Vertical Take-Off and Landing (VTOL) aerial vehicle to track a desired trajectory thanks to an adaptive robust compensation of the aerodynamic disturbances. The novelty of the proposed approach consists in employing an aerodynamic disturbance observer derived using the NonLinear Geometric Approach and Radial ...