Projectile with spin-producing flow passages
US4296893A · kind A · utility
Inventor
Key dates
| Filing date | Mar 8, 1979 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Mar 8, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B10/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A projectile for shooting from a gun barrel in response to the force of a propellant gas emanating from the aperture of a propellant container, comprising a projectile body having a plurality of spin-producing propellant gas flow passages associated therewith, said passages annularly surrounding, and having their respective axes extending obliquely to, the longitudinal axis of the projectile body, wherein each passage has an inlet portion converging to an adjoining constricted portion, and a diverging portion extending downstream from the constricted portion, the axis of each passage being curved over the entire length of its converging inlet portion and substantially rectilinear over its diverging portion, and the walls of the diverging portion of each passage having a substantially rectilinear form, as viewed in the direction of propellant gas flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.