Accession Number : AD0751236

Title :   Aerodynamic Interference Between a Wing and a Slender Cylindrical Store.

Descriptive Note : Masters thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Sullivan,Paul M.

Report Date : JUN 1971

Pagination or Media Count : 89

Abstract : Aerodynamic interference between an aircraft and a store carried beneath its wing is investigated using the simplified physical model of a uniform wing of infinite span and a slender body of revolution positioned beneath the wing. The wing is represented by a vortex filament, the store by a distribution of sources and doublets along its axis of revolution, and potential flow is presumed to exist. The aerodynamic forces acting on the store while it is attached to the aircraft are computed using this model. The trajectory that the store follows after it is released is studied for mass, initial position relative to the wing, and initial angle of attack. If a store is symmetric and homogeneous, it appears to be unstable after release, and rapidly violates the small angle assumptions of the study. Several trajectories are computed, and show that the aerodynamic loads can be large enough to propel a store of considerable mass into the ai craft that released it.

Descriptors :   (*EXTERNAL STORES, SUBSONIC CHARACTERISTICS), (*WINGS, EXTERNAL STORES), JETTISONABLE EQUIPMENT, EQUATIONS OF MOTION, HAZARDS, AERODYNAMIC LOADING, MATHEMATICAL MODELS, COMPUTER PROGRAMMING, INTERFERENCE, THESES, VORTICES

Subject Categories : Aircraft
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE