Wind shear terms in the equations of aircraft motion

Frost, W.; Bowles, Roland L.

doi:10.2514/3.45056

Cited by 68 publications

(20 citation statements)

References 2 publications

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“…WIND MODELLING Wind has a major role in aircraft guidance errors [1,2] and thus cannot be ignored in this study. Here a realistic wind model is introduced.…”

Section: Space Referenced Vertical Guidance Dynamicsmentioning

confidence: 99%

Space-Based Nonlinear Dynamic Inversion Control for Aircraft Continuous Descent Approach

Bouadi

Mora‐Camino

2012

2012 IEEE Conference on Evolving and Adaptive Intelligent Systems

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Abstract-With the growth of civil aviation traffic, enhanced accuracy performances are required from guidance systems to maintain efficiency and safety in flight operations. This communication proposes a new representation of aircraft flight dynamics at approach for landing and a space-based nonlinear dynamic inversion control for a transportation aircraft. The main novelty is that the adopted independent variable is the distance to land. This new representation of flight dynamics should support the development of improved aircraft guidance systems.

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“…WIND MODELLING Wind has a major role in aircraft guidance errors [1,2] and thus cannot be ignored in this study. Here a realistic wind model is introduced.…”

Section: Space Referenced Vertical Guidance Dynamicsmentioning

confidence: 99%

Space-Based Nonlinear Dynamic Inversion Control for Aircraft Continuous Descent Approach

Bouadi

Mora‐Camino

2012

2012 IEEE Conference on Evolving and Adaptive Intelligent Systems

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“…Ring vortex model [7,8,19]: this microburst model is based on the generation of a fluid field from a couple of ring vortexes. To describe the model closed form equations of the current flow around the ring vortex are used.…”

Section: Advanced Simulation Techniquesmentioning

confidence: 99%

Stochastic simulation techniques as related to innovation in communications-navigation-surveillance and air traffic management (CNS/ATM)

Galati

Naldi

Pavan

2003

Simulation Modelling Practice and Theory

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The design and operational tuning of the instruments and procedures employed in communications-navigation-surveillance (CNS) and air traffic management (ATM) often relies on stochastic simulation techniques. In this paper the application areas of simulation in the CNS/ATM context are reviewed together with the simulation methods that can help solve the main problems encountered, i.e. quick simulation techniques for the simulation of rare events, and the bootstrap technique for the evaluation of the accuracy of the results.

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“…(1), (4), (5), and (8). In this system, the state variables are x(t) 9 h(t) 9 V(t) 9 y(t) 9 ct(t) 9 and u(t) and the control variable is w(f)-We formulate the following optimization problem.…”

Section: A Optimal Control Problemmentioning

confidence: 99%

Optimization and acceleration guidance of flight trajectories in a windshear

Miele

Wang

Melvin

1987

Journal of Guidance, Control, and Dynamics

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This paper is concerned with guidance strategies for near-optimum performance in a windshear. The takeoff problem is considered with reference to flight in a vertical plane. In addition to the horizontal shear, the presence of a downdraft is assumed. First, trajectories for optimum performance in a windshear are determined for different windshear models and intensities. Use is made of the methods of optimal control theory in conjunction with the dual sequential gradient-restoration algorithm (DSGRA) for optimal control problems. In this approach, global information on the wind flowfield is needed. Then, guidance strategies for near-optimum performance in a windshear are developed, starting from the optimal trajectories. Specifically, an acceleration guidance scheme based on the relative acceleration is presented in both analytical and feedback control forms. In this approach, local information on the wind flowfield is needed. Numerical experiments show that the acceleration guidance scheme produces trajectories that are quite close to the optimum trajectories. In addition, the near-optimum trajectories are superior to the trajectories arising from alternative guidance schemes. An important characteristic of the acceleration guidance scheme is its simplicity. Indeed, this guidance scheme is implementable if local information on the windshear, the downdraft, and the state of the aircraft is available. ARL-acceleration of gravity, ft s~2 --altitude, ft s gain coefficient = lift force, Ib s mass, Ib ft -1 s 2 = reference surface, ft 2 = thrust force, Ib = relative velocity, ft s" 1 = absolute velocity, ft s" 1 = mg = weight, Ib = wind velocity, ft s~l = /*-cpmponent of wind velocity, ft s" 1 -^-component of wind velocity, ft s" 1 = horizontal distance, ft -relative angle of attack, rad = absolute angle of attack, rad = engine power setting = relative path inclination, rad = absolute path inclination, rad = thrust inclination, rad = pitch attitude angle, rad = air density, Ib ft" 4 s 2

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Wind shear terms in the equations of aircraft motion

Cited by 68 publications

References 2 publications

Space-Based Nonlinear Dynamic Inversion Control for Aircraft Continuous Descent Approach

Space-Based Nonlinear Dynamic Inversion Control for Aircraft Continuous Descent Approach

Stochastic simulation techniques as related to innovation in communications-navigation-surveillance and air traffic management (CNS/ATM)

Optimization and acceleration guidance of flight trajectories in a windshear

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