Nov 3, 2026

US12782095 - Fin stabilized projectile

The present disclosure provides a fin stabilized projectile which can accommodate subsonic and supersonic flight velocities, wherein flight performance characteristics of the projectile are stabilized. The projectile is configured to be incorporated into a sabot free cartridge, wherein the projectile can be launched from a smooth bore barrel. The projectile includes an elongate body having a diverging ogival nose section extending rearward from a leading end, a converging ogival back section terminating at a trailing end; and a tail segment having a tail fin projecting radially from the back section and extending longitudinally forward of the trailing end of the elongate body and extending longitudinally rearward of the trailing end of the elongate body.

Assignee: Crossbullet, LLC
Inventors: Nathan E. Smith, Robert Tuchrelo, Paul K. Maurer, Richard T. Aab
Filing date: 2025-02-28

projectileammunitionfin_stabilized

The patent describes a fin-stabilized projectile designed for both subsonic and supersonic flight, featuring an elongate body with a diverging ogival nose and a converging ogival back, along with a tail segment that includes a radially extending fin. This projectile is intended for use in sabot-free cartridges and can be launched from smooth bore barrels, enhancing its flight performance characteristics.

Claim 1

1 . A projectile for passing from a bore, the projectile comprising: (a) an elongate body extending along a longitudinal axis from a body leading end to a body trailing (converging) end, the elongate body having a diverging ogival nose segment having a first radius of curvature extending rearward from the body leading end and a converging ogival back segment having a second radius of curvature terminating at the body trailing (converging) end, and wherein the elongate body defines a maximum radial dimension; and (b) a tail segment including a first tail fin rigidly formed on the tail segment, the tail segment extending radially outward from the converging ogival back segment and extending along the longitudinal axis rearward of the body trailing (converging) end to terminate at a terminal end longitudinally spaced from the body trailing (converging) end, wherein the Tail segment has a fin radial dimension between about 25% and 100% of the maximum radial dimension of the elongate body during flight of the projectile. (a) an elongate body extending along a longitudinal axis from a body leading end to a body trailing (converging) end, the elongate body having a diverging ogival nose segment having a first radius of curvature extending rearward from the body leading end and a converging ogival back segment having a second radius of curvature terminating at the body trailing (converging) end, and wherein the elongate body defines a maximum radial dimension; and (b) a tail segment including a first tail fin rigidly formed on the tail segment, the tail segment extending radially outward from the converging ogival back segment and extending along the longitudinal axis rearward of the body trailing (converging) end to terminate at a terminal end longitudinally spaced from the body trailing (converging) end, wherein the Tail segment has a fin radial dimension between about 25% and 100% of the maximum radial dimension of the elongate body during flight of the projectile.

Google Patents

https://patents.google.com/patent/US12782095

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12782095