Abstract
A modular model, consisting of cruciform canard controls mounted on a thin forebody and e ve interchangeable thick (larger-diameter ) main bodies, was tested at a Mach number of 0.8. The canard was installed at the + + and x positions and at dee ection angles of 0, 6, and 12 deg. The model was equipped with two sting balances in a setup that enabled to obtain theloads acting on thecanard unitand those acting on themain bodies. Fourinteractionson mainbody normalforceandcenterofpressureareidentie edand quantie ed:effectsofthecanard on thethickening of the main bodies and on the boattails, as a function of angle of attack and canard dee ection. The interactions are analyzed using an approximate vortex tracker, which is based on slender body theory. Then, the pertinent part of the Pitts, Nielsen, and Kaattari component buildup method is used to calculate the interactions. The results of the analysis are in good agreement with the present test data, except for the effect of canard dee ection on the boattail, where the analysis leaves a large gap. Using the present method, to add the subject effects to component buildup analysis of variety of cone gurations improves the agreement with test data.
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