Accession Number:

ADP005028

Title:

Nonlinear Problens in Flight Dynamics Involving Aerodynamic Bifurcations,

Descriptive Note:

Corporate Author:

NATIONAL AERONUATICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s):

Report Date:

1985-11-01

Pagination or Media Count:

15.0

Abstract:

Aerodynamic bifurcation is defined as the replacement of an unstable equilibrium flow by a new stable equilibrium flow at a critical value of a parameter. A mathematical model of the aerodynamic contribution to the aircrafts equations of motion is amended to accommodate aerodynamic bifurcations. Important bifurcations such as, for example, the onset of large-scale vortex-shedding are defined. The amended mathematical model is capable of incorporating various forms of aerodynamic responses, including those associated with dynamic stall of airfoils.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE