CONTROL OF THE AERODYNAMIC CHARACTERISTICS OF WING AIRFOILS 
BY NONSTATIONARY ENERGY SUPPLY IN TRANSONIC FLOW

S. M. Aul'chenko, V. P. Zamuraev, and A. P. Kalinina

UDC 533.6.011

The possibility of controlling the aerodynamic characteristics 
of wing airfoils in transonic regimes of flight using one-sided pulse-periodic 
energy supply has been studied. The flow structure near the symmetric 
airfoil at different angles of attack and its aerodynamic characteristics 
as functions of the value of energy in its nonsymmetric (about the 
airfoil) supply have been determined by numerical solution of two-dimensional 
nonstationary gasdynamic equations. A comparison of the obtained results 
and the data of calculation of flow past the airfoil at different 
angles of attack without energy supply has been made. It has been 
established that a prescribed lift can be obtained, using energy supply, 
with a much higher fineness ratio of the airfoil than that in the 
case of flow past it at an angle of attack.

Keywords: transonic flow, aerodynamic characteristics, 
energy supply, angle of attack, Euler equations.
 
S. A. Khristianovich Institute of Theoretical and Applied 
Mechanics, Siberian Branch of the Russian Academy of Sciences, 4/1 
Institutskaya Str., Novosibirsk, 630090, Russia; email: aultch@itam.nsc.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 82, No. 1, pp. 
18-22, January-February, 2009. Original article submitted 
November 2, 2007; revision submitted April 4, 2008.