Real-Time Flight Simulation of Highly Maneuverable Unmanned Aerial Vehicles

This paper focuses on full six degree-of-freedom aerodynamic modeling of small unmanned aerial vehicles at high angles of attack and high sideslip in maneuvers performed using large control surfaces at large deflections for aircraft with high thrust-to-weight ratios. Configurations, such as this, include many of the currently available propeller-driven radio-controlled model airplanes that have control surfaces as large as 50% chord, deflections as high as 50 deg, and thrust-to-weight ratios near 2∶1. Airplanes with these capabilities are extremely maneuverable and aerobatic, and modeling their aerodynamic behavior requires new thinking because using traditional stability-derivative methods is not practical with highly nonlinear aerodynamic behavior and coupling in the presence of high prop-wash effects. The method described outlines a component-based approach capable of modeling these extremely maneuverable small unmanned aerial vehicles in a full six degree-of-freedom real-time environment over the full...

[1]  C. H. Zimmerman,et al.  Characteristics of Clark Y airfoils of small aspect ratios , 1932 .

[2]  C H Zimmerman.  Aerodynamic Characteristics of Several Airfoils of Low Aspect Ratio , 1935 .

[3]  Abe Silverstein,et al.  Aerodynamic Characteristics of Horizontal Tail Surfaces , 1940 .

[4]  Philip W Pepoon,et al.  Tail-design requirements for satisfactory spin recovery , 1946 .

[5]  William R Bates.  Collection and analysis of wind-tunnel data on the characteristics of isolated tail surfaces with and without end plates , 1947 .

[6]  B. H. Wick,et al.  Study of the subsonic forces and moments on an inclined plate of infinite span , 1954 .

[7]  Leo F. Fehlner,et al.  Free-Stream Characteristics of A Family of Low-Aspect-Ratio, All-Movable Control Surfaces for Application to Ship Design , 1958 .

[8]  D. G. Koenig,et al.  Low-Speed Tests of Semispan-Wing Models at Angles of Attack from 0 to 180 degrees , 1959 .

[9]  D. E. Hoak,et al.  USAF stability and control Datcom (data compendium) , 1960 .

[10]  Philip Mandel,et al.  AN EXPERIMENTAL STUDY OF A SERIES OF FLAPPED RUDDERS , 1971 .

[11]  S. M. Burk,et al.  Spin-Tunnel Investigation of the Spinning Characteristics of Typical Single-Engine General Aviation Airplane Designs. 1. Low-Wing Model A: Effects of Tail Configurations , 1977 .

[12]  Jack N. Nielsen,et al.  Rolling moments in a trailing vortex flow field , 1977 .

[13]  Hermann Schlichting,et al.  Aerodynamics of the airplane , 1979 .

[14]  D. W. Camp,et al.  A geometrical study of the steady-state spin for a typical low-wing general aviation aircraft , 1981 .

[15]  R. E. Sheldahl,et al.  Aerodynamic Characteristics of Seven Symmetrical Airfoil Sections Through 180-Degree Angle of Attack for Use in Aerodynamic Analysis of Vertical Axis Wind Turbines , 1981 .

[16]  L. W. Taylor,et al.  Estimation of Aerodynamic Forces and Moments on a Steadily Spinning Airplane , 1984 .

[17]  B. W. Mccormick,et al.  Wind tunneling testing and analysis relating to the spinning of light aircraft , 1984 .

[18]  C. Ostowari,et al.  Post-stall wind tunnel data for NACA 44XX series airfoil sections , 1985 .

[19]  W. A. Poppen,et al.  A method for estimating the rolling moment due to spin rate for arbitrary planform wings , 1985 .

[20]  James S. Bowman,et al.  Measurements of pressures on the tail and aft fuselage of an airplane model during rotary motions at spin attitudes , 1988 .

[21]  M. Drela.  XFOIL: An Analysis and Design System for Low Reynolds Number Airfoils , 1989 .

[22]  J. L. Tangler,et al.  Horizontal axis wind turbine post stall airfoil characteristics synthesization , 1991 .

[23]  Michael S. Selig,et al.  Development and Application of a Multipoint Inverse Design Method for Horizontal Axis Wind Turbines , 1995 .

[24]  Michael S. Selig,et al.  A real-time atmospheric turbulence model for aircraft flight simulators , 1998 .

[25]  Lars E. Ericsson.  Vortex Characteristics of Pitching Double-Delta Wings , 1999 .

[26]  J. Gordon Leishman,et al.  Principles of Helicopter Aerodynamics , 2000 .

[27]  Edward Dickes,et al.  APPLICATION OF LARGE-ANGLE DATA FOR FLIGHT SIMULATION , 2000 .

[28]  Josef Shinar.  Performance, stability, dynamics and control of airplanes: Bandu N. Pamadi; AIAA Educational Series, New York, 1998, ISBN 1-56347-222-8 , 2001, Autom..

[29]  Paul Gelhausen,et al.  A POWERED LIFT AERODYNAMIC ANALYSIS FOR THE DESIGN OF DUCTED FAN UAVS , 2003 .

[30]  Meyer Nahon,et al.  Dynamics modeling and performance evaluation of an autonomous underwater vehicle , 2004 .

[31]  Thomas J. Mueller,et al.  Low-aspect-ratio wing aerodynamics at low Reynolds numbers , 2004 .

[32]  Niels N. Sørensen,et al.  CFD computations of wind turbine blade loads during standstill operation KNOW-BLADE, Task 3.1 report , 2004 .

[33]  Niels N. Sørensen,et al.  Drag Prediction for Blades at High Angle of Attack Using CFD , 2004 .

[34]  Neil Kelley,et al.  Overview of the TurbSim Stochastic Inflow Turbulence Simulator , 2005 .

[35]  John V. Foster,et al.  Dynamics Modeling and Simulation of Large Transport Airplanes in Upset Conditions , 2005 .

[36]  Jan Vierendeels,et al.  Numerical Investigation of Low-Aspect-Ratio Wings at Low Reynolds Numbers , 2005 .

[37]  Kenneth J. Desabrais,et al.  Aerodynamic Forces on an Airdrop Platform , 2005 .

[38]  M. D. Salas,et al.  Digital Flight: The Last CFD Aeronautical Grand Challenge , 2006, J. Sci. Comput..

[39]  Jonathan E. Cooper,et al.  Introduction to Aircraft Aeroelasticity and Loads , 2007 .

[40]  Jonathan P. How,et al.  Hover, Transition, and Level Flight Control Design for a Single-Propeller Indoor Airplane , 2007 .

[41]  David L. Darmofal,et al.  Petaflops Opportunities for the NASA Fundamental Aeronautics Program , 2007 .

[42]  Eric Feron,et al.  Flight Modeling and Experimental Autonomous Hover Control of a Fixed Wing Mini-UAV at High Angle of Attack , 2007 .

[43]  R. P. J. O. M. van Rooij.  Analysis of the Flow Characteristics of Two Nonrotating Rotor Blades , 2008 .

[44]  Daisuke Kubo,et al.  Tail-Sitter Vertical Takeoff and Landing Unmanned Aerial Vehicle: Transitional Flight Analysis , 2008 .

[45]  Peter W. Gibbens,et al.  Flight Testing of the T-Wing Tail-Sitter Unmanned Air Vehicle , 2008 .

[46]  C. P. van Dam,et al.  Determination of Wing-Only Aircraft Tumbling Characteristics Through Computational Fluid Dynamics , 2008 .

[47]  Daniel A. Wachspress,et al.  Physical Modeling of Aircraft Upsets for Real-Time Simulation Applications , 2008 .

[48]  David R. Gingras,et al.  Aerodynamics Modeling for Upset Training , 2008 .

[49]  David A. Spera,et al.  Models of Lift and Drag Coefficients of Stalled and Unstalled Airfoils in Wind Turbines and Wind Tunnels , 2008 .

[50]  R. H. Stone,et al.  Aerodynamic Modeling of the Wing-Propeller Interaction for a Tail-Sitter Unmanned Air Vehicle , 2008 .

[51]  Jeffrey Keller,et al.  Aircraft Flight Envelope Determination using Upset Detection and Physical Modeling Methods , 2009 .

[52]  Tiauw Hiong Go,et al.  Improved Component Buildup Method for Fast Prediction of the Aerodynamic Performances of a Vertical Takeoff and Landing Micro Air Vehicle , 2009 .

[53]  Jonathan P. How,et al.  Nonlinear Agile Control Test Bed for a Fixed Wing Aircraft in a Constrained Environment , 2009 .

[54]  Mehdi Ghoreyshi,et al.  Accelerating the Numerical Generation of Aerodynamic Models for Flight Simulation , 2009 .

[55]  Michael S. Selig,et al.  Modeling propeller aerodynamics and slipstream effects on small UAVs in realtime , 2010 .

[56]  Michael S. Selig,et al.  Modeling full-envelope aerodynamics of small UAVs in realtime , 2010 .

[57]  Michael S. Selig,et al.  Health Monitoring via Neural Networks , 2010 .

[58]  Rick Lind,et al.  Characterizing Wing Rock with Variations in Size and Configuration of Vertical Tail , 2010 .

[59]  Michael S. Selig,et al.  Dynamic Soaring of Sailplanes over Open Fields , 2010 .

[60]  Arthur Rizzi,et al.  Creation of Aerodynamic Database for the X-31 , 2010 .

[61]  Ashok Gopalarathnam,et al.  Simulation of Flight Dynamics with an Improved Post-Stall Aerodynamics Model , 2012 .

[62]  Ashok Gopalarathnam,et al.  A CFD Database for Airfoils and Wings at Post-Stall Angles of Attack , 2013 .

[63]  Michael Ol,et al.  Wind Tunnel Evaluation of Powered Static Aerodynamics of an Aerobatic UAV , 2013 .

[64]  R. V. Jategaonkar,et al.  Flight Vehicle System Identification: A Time-Domain Methodology, Second Edition , 2015 .

[65]  Ute Hoffmann,et al.  Aircraft System Identification Theory And Practice , 2016 .