Methods for Predicting the Longitudinal Damping Coefficients for Vertical Acceleration and Pitch.
Abstract
Methods for predicting values for vertical acceleration and pitch are presented. The instantaneous formulation is examined by use of the indicial response technique applied to a linear second order differential equation for nondimensional pitching moment as a function of time. Various examples of indicial responses are examined to determine under what conditions vertical acceleration and pitch may be considered time independent. A potential fluid method referred to as the method of Inertial Coefficients is used to find vertical acceleration and pitch for those cases where the fluid is free of vorticity and vortex lines. This technique is subsequently supplanted by a more general method using Allen's Crossflow Theory and a variety of slender body equations applicable to the analysis. The report is written to provide sufficable to the analysis. The report is written to provide sufficient theory, equations, and references to find vertical acceleration and pitch slender bodies with fore and aft wings in the presence of body or wing induced vortices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1974
- Accession Number
- AD0920127
Entities
People
- R. W. Conlan
Organizations
- University of Florida