Nonlinear Analysis of the Rolling Motion of a Wrap-Around Fin Missile at Angles of Attack from 0 to 90 deg in Incompressible Flow
Final rept. Mar 1975-Mar 1977
NAVAL SURFACE WEAPONS CENTER DAHLGREN LAB VA
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Dynamic subsonic wind tunnel test data are presented for a wrap- around fin WAF missile configuration in pure rolling motion at angles of attack from 0 through 90 deg. A nonlinear second-order differential equation of motion which describes the rolling motion of the four-finned WAF missile is discussed. This equation of motion is utilized in a global nonlinear least- squares fitting procedure to extract linear and nonlinear aerodynamic roll moment coefficients from the wind tunnel test data. The equation of motion together with four extracted coefficients are shown to adequately explain the subsonic rolling motion of a WAF missile configuration at angles of attack from 0 through 90 deg.
- Fluid Mechanics