RT Journal Article
ID 2c1acc097549d8a8
A1 Vladimirova, Natalya Alekseevna
T1 CALCULATION OF AERODYNAMIC CHARACTERISTICS OF HELICOPTER ROTOR IN HOVER AND AIRFOILS IN NONSTATIONARY FLOW
JF TsAGI Science Journal
JO TSAGI
YR 2015
FD 2015-06-18
VO 46
IS 1
SP 17
OP 28
K1 main rotor
K1 airfoil
K1 computational fluid dynamics
K1 aerodynamic characteristics
K1 nonstationary flow
K1 hysteresis
AB Computational fluid dynamics (CFD) methods are used to model the flow features and in the computations of the
aerodynamic characteristics of a helicopter rotor. For the purpose of verification and validation of the numerical methods used, techniques to calculate the main rotor flow in two CFD software packages were developed. The results show satisfactory agreement between the three-dimensional calculations of the integral and distributed characteristics of a two-blade rotor model rotating in hover and the data from the experiment carried out using the standard method at TsAGI. A technique to calculate the two-dimensional transonic nonstationary fluctuating flow over a helicopter airfoil with a specified periodic law of variation over time of the incoming flow velocity was suggested. The results for direct and inverse motion of the airfoil are compared. The phenomenon of hysteresis against the free-stream Mach number was revealed.
PB Begell House
LK http://dl.begellhouse.com/journals/58618e1439159b1f,67ab94a50b37cdf3,2c1acc097549d8a8.html