Aerodynamic interference can occur between high-speed bodies when in closeproximity. A complex flowfield develops where shock and expansion waves from agenerator body impinge upon the adjacent receiver body and modify itsaerodynamic characteristics. The aims of this paper are to validate acomputational prediction method, to use the predicted solutions to interpret themeasured results and to provide a deeper understanding of the associated flowphysics. The interference aerodynamics for two slender bodies were investigatedthrough a parametric wind tunnel study where the effect of axial stagger wasinvestigated for different receiver body incidence angles. Measurements includedforces and moments, surface pressures and shadowgraph visualisations. Supportingcomputational predictions provided a deeper understanding of the underlyingaerodynamics and flow mechanisms. Good agreement was found between the measuredand predicted interference loads and surface pressures for all configurations.The interference loads are strongly dependent upon the axial impingementlocation of the primary shockwave. These induced interference loads changepolarity as the impingement location moves aft over the receiver. Distinctinterference characteristics are observed when the receiver is placed at highpositive incidence, where the impinging shock has a strong effect on thecrossflow separation location. Overall, the observed interference effects areexpected to modify the subsequent body trajectories and may increase thelikelihood of a collision.
展开▼
