Accession Number : AD0754208

Title :   Effect of Two Dimensional Suction Flows into Double Intakes on the Upper Surface of a Joukowski Airfoil,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Nagaraja,K. S.

Report Date : NOV 1972

Pagination or Media Count : 24

Abstract : Fan-in-wing type vertical take-off and landing aircraft are under investigation in the development cycle of new classes of aircraft for military and civilian missions. In view of inadequate theoretical and experimental information available, some preliminary analyses of two-dimensional problems are explored. The effect of suction flow alone on the aerodynamic characteristics of an airfoil exhibit certain novel features such as invalidation of Kutta condition for high values of intake to free stream velocity ratio. With a view to understand the flow characteristics when two intakes are located on the upper surface of a Joukowski airfoil, the two-dimensional potential flow theory is applied. (Author)

Descriptors :   (*VERTICAL TAKEOFF AIRCRAFT, WING INLETS), (*WING INLETS, AERODYNAMIC CHARACTERISTICS), FLOW FIELDS, AERODYNAMIC CONTROL SURFACES, TWO DIMENSIONAL FLOW, AIRFOILS, FLAT PLATE MODELS, POTENTIAL THEORY, LIFT, MATHEMATICAL MODELS

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE