Accession Number : AD0784254
Title : Aerodynamic Symmetry of Aircraft and Guided Missiles.
Descriptive Note : Final rept. Jul-Dec 74,
Corporate Author : AIR FORCE ARMAMENT LAB EGLIN AFB FLA
Personal Author(s) : Zipfel,Peter H.
Report Date : JUL 1974
Pagination or Media Count : 23
Abstract : A theory is developed that takes advantage of the inherent configurational symmetries of aircraft and guided missiles to eliminate some force and moment derivatives. Starting with the Principle of Material Indifference, tensor analysis is employed to derive two simple conditions for vanishing aerodynamic derivatives. The results apply to derivatives of arbitrary order, taken with respect to linear and angular velocities, linear accelerations, and control surface deflections. Two charts are presented that sift out the vanishing derivatives up to second order for missiles with tetragonal symmetry and up to third order for aircraft with reflectional symmetry. (Author)
Descriptors : *Aircraft, *Guided missiles, *Aerodynamic forces, Symmetry, Tensor analysis, Aerodynamic characteristics, Taylors series
Subject Categories : Aerodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE