Aerodynamic stabilization of a projectile

Aeronautics and astronautics – Missile stabilization or trajectory control – Externally mounted stabilizing appendage

Reexamination Certificate

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Details

C244S003240, C244S003290, C102S400000, C102S520000

Reexamination Certificate

active

06871818

ABSTRACT:
The center of pressure of a projectile is caused to move upon the occurrence of an event that changes the static margin, such as the jettisoning of a body previously attached to the projectile, as noted above. In particular embodiments, this is achieved by a flare disposed toward the rear of the projectile. The flare has petals that deploy from a first, stowed position to a second, deployed position upon the occurrence of the event. In the stowed position, the petals are aligned with the air stream, in order to minimize drag. In the deployed position, the petals project into the air stream in such a way as to move the lift center rearward. A slide ring within the flare has sufficient inertia that it shifts aft in response to an acceleration that occurs when the attached body and the projectile are separated from one another. The slide ring is linked to the petals in such a way that the petals are deployed by the displacement of the slide ring. The slide ring is prevented from moving aft during launch of the projectile by slide supports which separate from the aft body when the separation event occurs. Detents lock the slide ring in its displaced position.

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