Accession Number : ADD000176
Title : High/Low Aspect Ratio Dual-Mode Fin Design.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Jones,Daniel A
Report Date : 05 Feb 1974
Pagination or Media Count : 4
Abstract : The patent relates to a dual-mode fin design for gun-launched, rocket-assisted, guided projectiles in which, from a flush position against the body, the fins rotate radially at launch to deploy in the low aspect-ratio mode for stability during the supersonic fly-out phase with transition to the high aspect-ratio mode for the transonic terminal maneuvering phase. Deployment of the fins to high aspect-ratio mode is effected by shearing restraining pins which allow the fins to rotate rearwardly about pivot pins and under the air stream influence.
Descriptors : *Guided projectiles, *Aerodynamic control surfaces, *Patents, Fins, Deployment, Aspect ratio, Aerodynamic stability, Terminal guidance
Subject Categories : Ammunition and Explosives
Distribution Statement : APPROVED FOR PUBLIC RELEASE