Accession Number : AD0892403

Title :   The Effects of Boundary Layer Separation upon Vehicle Stability in the Subsonic and Transonic Flow Regimes - A Review of Recent Literature.

Descriptive Note : Final rept. Mar 70-Jul 71,

Corporate Author : FLORIDA UNIV GAINESVILLE

Personal Author(s) : Leadon, Bernard M.

Report Date : AUG 1971

Pagination or Media Count : 56

Abstract : The literature relating to vehicle stability was searched for papers in which flow separation from aerodynamic surfaces is explicitly studied. Data were found usually to deal with Magnus forces and moments, roll-yaw coupling, roll lock-in, and similar phenomena of less than obvious origins. Ample justification for detailed examination of boundary layers and of nonlinear equations of motion is offered by these examples since these are vehicle characteristics which are at present unpredictable primarily because three-dimensional boundary layer behavior is not well understood. Some examples of methods of numerical analysis of flight test data which aim at the extraction of the nonlinear coefficients of the equations of motion are cited. Finally, a background of well-established boundary layer theory is presented, and the advances of the past few years are reviewed. (Author)

Descriptors :   (*FLOW SEPARATION, BIBLIOGRAPHIES), (*BOUNDARY LAYER, FLOW SEPARATION), (*AIRCRAFT, STABILITY), SUBSONIC FLOW, EQUATIONS OF MOTION, BOUNDARY LAYER TRANSITION, NUMERICAL ANALYSIS, FLIGHT TESTING, EXPERIMENTAL DATA, THEORY, THREE DIMENSIONAL FLOW, NONLINEAR SYSTEMS, TRANSONIC FLOW, FORCE(MECHANICS), MAGNUS EFFECT, ROLL, YAW, MOMENTS, BUFFETING, AERODYNAMIC CONTROL SURFACES.

Subject Categories : Aircraft
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE