On aerodynamic modelling for rotorcraft flight dynamics

It has been known for some time that the prediction of rotor forces and moments for flight dynamics applications is sensitive to the specific assumptions employed in modelling aerodynamics. This paper reviews several critical aspects of the most widely used models and the suggested extensions to them, with an emphasis on the prediction of helicopter control response.

[1]  T. Kármán,et al.  Airfoil Theory for Non-Uniform Motion , 1938 .

[2]  D. Peters,et al.  Effectiveness of Current Dynamic-Inflow Models in Hover and Forward Flight , 1986 .

[3]  D. Banerjee,et al.  Parameter identification applied to analytic hingeless rotor modeling , 1979 .

[4]  R. T. Jones The unsteady lift of a wing of finite aspect ratio , 1940 .

[5]  David A. Peters,et al.  Theoretical prediction of dynamic inflow derivatives , 1980 .

[6]  W. S. Hindson,et al.  Influence of high-order dynamics on helicopter flight-control system bandwidth , 1986 .

[7]  Alfred Gessow,et al.  Aerodynamics of the Helicopter , 1981 .

[8]  Mark G. Ballin,et al.  Validation of the Dynamic Response of a Blade-Element UH-60 Simulation Model in Hovering Flight , 1991 .

[9]  Franklin D. Harris,et al.  Articulated Rotor Blade Flapping Motion at Low Advance Ratio , 1972 .

[10]  G. TEMPLE,et al.  Stability and Control , 1953, Nature.

[11]  Paul J Carpenter,et al.  Effect of a Rapid Blade-Pitch Increase on the Thrust and Induced-Velocity Response of a Full-Scale Helicopter Rotor , 1953 .

[12]  David A. Peters,et al.  Dynamic inflow for practical applications , 1988 .

[13]  M. Hossein Mansur,et al.  An Empirical Correction Method for Improving off-Axes Response Prediction in Component Type Flight Mechanics Helicopter Models , 1997 .

[14]  R. Gray AN AERODYNAMIC ANALYSIS OF A SINGLEBLADED ROTOR IN HOVERING AND LOW- SPEED FORWARD FLIGHT AS DETERMINED FROM SMOKE STUDIES OF THE VORTICITY DISTRIBUTION IN THE WAKE , 1956 .

[15]  Kurt H. Hohenemser,et al.  Model tests on unsteady rotor wake effects. , 1973 .

[16]  W. F. Ballhaus,et al.  Computation of unsteady transonic flows by the indicial method , 1977 .

[17]  Kurt H. Hohenemser,et al.  Identification of state variables and dynamic inflow from rotor model dynamic tests , 1977 .

[18]  R. H. Miller,et al.  Rotor blade harmonic air loading , 1964 .

[19]  Robert T. N. Chen A survey of nonuniform inflow models for rotorcraft flight dynamics and control applications , 1990 .

[20]  W. R. Sears,et al.  Operational methods in the theory of airfoils in non-uniform motion , 1940 .

[21]  Jeffrey D. Keller,et al.  An investigation of helicopter dynamic coupling using an analytical model , 1996 .

[22]  Kurt H. Hohenemser,et al.  An unsteady wake model for a hingeless rotor , 1973 .