Smart Projectile Performance Augmentation Using an Articulating Nose

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BUTLER-DISSERTATION-2025.pdf (11.17 MB)
Author(s)
Butler, Cason Nicholas
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Daniel Guggenheim School of Aerospace Engineering
The Daniel Guggenheim School of Aeronautics was established in 1931, with a name change in 1962 to the School of Aerospace Engineering
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https://hdl.handle.net/1853/77850
Abstract
This dissertation examines the integration and performance of an articulating nose mechanism in projectile control systems. The articulating nose provides powerful minimum-phase control similar to a canard, generating substantial normal force for steering while adding no passive drag penalty when in its neutral position, unlike conventional control surfaces. The research employs a specialized multibody dynamic model alongside an articulating nose projectile linear theory to enable comprehensive analysis of articulating nose systems. The study demonstrates that an actively controlled articulating nose can effectively stabilize open-loop unstable projectiles, offering an alternative approach to traditional fin and spin stabilization methods. Maneuverability and agility characteristics of an articulating nose projectile are investigated alongside an examination of limitations such as roll coupling response. Further, the research explores how an articulating nose can extend projectile range through more favorable lift-to-drag ratios compared to fin-based control systems. Overall, this dissertation establishes the viability of the articulating nose as a control mechanism that can bring distinct benefits to stability, agility, maneuverability, and aerodynamic efficiency.
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2025-04-23
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Dissertation
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