Single actuator direct drive roll control
US6848648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Feb 25, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B10/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system and method for controlling roll in a projectile. The novel system (56) includes first (52) and second (58) sections adapted to counter-rotate relative to each other and a mechanism (76) for inducing the counter-rotation to generate a roll torque on the projectile (50). In the preferred embodiment, the mechanism (76) is a motor comprised of a rotor (64) affixed to the first section (52), and the second section (58) which acts as a stator that rotates around the rotor (64) when a current is applied to the armature. In an alternative embodiment, the second section (58) is turned by a motor (80) attached to the first section (52) which drives a small gear engaging a full-diameter ring gear (82) on the second section (58). In the illustrative examples, the first (52) and second (58) sections are a missile forebody and a tail section of the projectile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.