A Numerical Simulation of a Free-to-Roll Wing Rock of a Delta Wing

2004 ◽  
Vol 52 (611) ◽  
pp. 535-540 ◽  
Author(s):  
Masataka Hirano ◽  
Koji Miyaji
Keyword(s):  
Numerical Simulation ◽  
Delta Wing ◽  
Wing Rock

Numerical Simulation of Heat Transfer Enhanced Tube Inserted Delta-Wing

2014 ◽  
Vol 535 ◽  
pp. 66-70
Author(s):  
Chen Hong Zhao ◽  
Yong Gang Lei
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Pressure Drop ◽  
Inclination Angle ◽  
Delta Wing ◽  
Delta Wings ◽  
Enhanced Tube ◽  
Delta Winglet

Heat transfer and resistance characteristics of a tube inserted delta-winglet (inclination angle is 10 °) are studied by numerical simulation. The results show that the delta-winglet enhance the heat transfer of the enhancement tube inserted delta-winglet and improve the PEC with modest pressure drop penalties. Compared with based tubes, the delta-wings structure enhance the heat transfer 19.52%-31%.

scholarly journals Numerical simulation of forced and free-to-roll delta-wing motions

1996 ◽  
Vol 33 (1) ◽  
pp. 93-99 ◽  
Author(s):  
Neal M. Chaderjian ◽  
Lewis B. Schiff
Keyword(s):  
Numerical Simulation ◽  
Delta Wing

scholarly journals Numerical simulation with low artificial dissipation of transitional flow over a delta wing

2020 ◽  
Vol 405 ◽  
pp. 109182
Author(s):  
Wybe Rozema ◽  
Johan C. Kok ◽  
Arthur E.P. Veldman ◽  
Roel W.C.P. Verstappen
Keyword(s):  
Numerical Simulation ◽  
Delta Wing ◽  
Transitional Flow ◽  
Artificial Dissipation

Composite adaptive posicast controller for the wing rock phenomenon in a delta-wing aircraft

2019 ◽  
Vol 233 (15) ◽  
pp. 5579-5591
Author(s):  
Amir Yousefimanesh ◽  
Alireza Khosravi ◽  
Pouria Sarhadi
Keyword(s):  
Delta Wing ◽  
Tracking Error ◽  
Adaptive Controller ◽  
Composite Model ◽  
Input Delay ◽  
Model Reference ◽  
Wing Rock ◽  
Adaptive Laws ◽  
Regulation And Tracking ◽  
Model Reference Adaptive

The nonlinear dynamic phenomenon like wing rock is one of the important issues in the high performance aircraft autopilot design. This phenomenon occurs in the form of constant amplitude oscillations in the roll dynamics, during the flight at high angles of attack (AOAs) and endangers carrying out the mission of an aircraft. In this paper, a composite adaptive posicast controller is designed for the wing rock phenomenon in a delta-wing aircraft with known input delay. The existence of the input delay besides the parametric uncertainties of the system dynamics adds to the complexity of the problem and can cause undesirable troubles in regulation and tracking performance or instability in the control system. Consequently, there is a need for a controller that can provide the stability and desirable regulation and tracking for the system. The proposed control method uses the system state forecasting and the composite model reference adaptive controller in an integrated control structure based on linear quadratic regulator (LQR). Combining the tracking error and the prediction error to form the adaptive laws in the composite model reference adaptive controller improves the characteristics of the system response and provides a better performance compared to the model reference adaptive controller in which the adaptive laws are formed only with the tracking error. Simulation results show the efficiency of the composite adaptive posicast controller in counteracting the system uncertainties in the presence of considerably large input delay cases.

Conical Euler simulation of wing rock for a delta wing planform

1991 ◽  
Vol 28 (1) ◽  
pp. 94-96 ◽  
Author(s):  
Elizabeth M. Lee ◽  
John T. Batina
Keyword(s):  
Delta Wing ◽  
Wing Rock
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