Abstract
Symmetrical ballistic-type re-entry bodies have been observed to exhibit erratic roll behavior during flight. This unpredicted behavior can have adverse effects on performance by producing excessive loads and dispersion. To explain the observed phenomena, roll characteristics produced by several types of mass and aerodynamic asymmetries were determined by numerical solution of the equations of motion and by a simplified analytical solution. The asymmetries considered included lateral displacement of the center of gravity and center of pressure, inclination of the principal longitudinal axis to the body geometrical center line, unequal pitch and yaw moment of inertia about the principal axes, and asymmetric aerodynamic moments. All types of asymmetries, except for the inclination of the principal axis, produced significant roll torque, and various combinations of these asymmetries produced roll-rate histories similar to those observed on flight records.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
