Topic
Obturator ring
About: Obturator ring is a research topic. Over the lifetime, 17 publications have been published within this topic receiving 89 citations.
Papers
Patent•
23 Oct 1978TL;DR: In this paper, an obturator for a projectile to be fired from a rifled barrel is provided, with the obturators being mounted on the projectile in such a way as to permit rotational slippage.
Abstract: An obturator for a projectile to be fired from a rifled barrel is provided in accordance with this invention, with this obturator being mounted on the projectile in such a way as to permit rotational slippage. A preferred form of our obturator comprises a ring of non-metalic material, which ring is capable of being mounted on a circular body portion of the projectile. An external portion of the obturator ring has a plurality of encircling slots, essentially parallel to each other, which slots are rearwardly inclined so as to define a plurality of chevron-like members designed to forcibly engage the rifling of the barrel. The interior of the obturator ring is designed to slip rotationally with respect to the projectile body portion as the projectile travels along the barrel, thereby advantageously minimizing the rotation of the projectile as a result of rifling effects. One embodiment of an obturator in accordance with this invention may be designed to disintegrate as it leaves the barrel, whereas another embodiment may utilize an overwrap of high temperature filamentary material in at least some of the slots, which overwrap serves to increase the hoop strength of the obturator.
22 citations
Patent•
30 Sep 1988
TL;DR: In this paper, an obturator ring for butterfly valve type has been described, mounted in a groove made on the periphery of the flap, with a split ring-shaped seal working with a first elastic member applying the seal against the valve body and a second elastic member applied the sealing against the groove, the elastic members being made of a refractory material.
Abstract: Disclosed is an obturator ring for valves of the butterfly valve type which has, mounted in a groove made on the periphery of the flap, a split ring-shaped seal working with a first elastic member applying the seal against the valve body and a second elastic member applying the seal against the groove, the elastic members being made of a refractory material.
22 citations
Patent•
26 Feb 1993
TL;DR: In this article, the rod penetrator core is supported structurally during gun launch by a minimum weight segmented sabot, which engages the barrel rifling, followed by a segmented plastic obturator (15), then a solid plastic oburator ring (17), which provides an uninterrupted gas seal and which holds all segmented components together around the rod penetration prior to launch.
Abstract: An improved small caliber armor piercing projectile (10) having a fin stabilized sub-caliber high density rod penetrator (11) and an adequately large tracer cavity (23). The tracer cavity does not degrade the armor penetrating capability of the projectile. The rod penetrator core is supported structurally during gun launch by a minimum weight segmented sabot (13) which engages the barrel rifling, followed by a segmented plastic obturator (15), followed by a solid plastic obturator ring (17) which provides an uninterrupted gas seal and which holds all segmented components together around the rod penetrator prior to launch. The solid obturator ring is blown apart upon muzzle exit by entrapped propellant gas pressure retained in an internal aft cavity (19). All plastic obturator components are located behind the structural sabot so that the propellant gas pressure will maintain the segmented obturator under hydrostatic compression while in the barrel to ensure projectile inbore stability. Upon muzzle exit, the segmented components freely discard from the flight projectile without introducing trajectory disturbances.
14 citations
Patent•
15 Mar 1990
TL;DR: In this article, an obturator with a groove formed in the outer wall is used to transition the fiber from a longitudinal to a substantially tangential direction and an ejectable aft closure plate is provided to seal the interior of the projectile during launch.
Abstract: Improvements to a fiber optically guided projectile include an obturator with a groove formed in the outer wall. An obturator ring is placed in the groove. The ring is made of resilient material, has a relaxed diameter greater than the bottom of the groove and is split so that it is releasable from the groove. Additionally, the rear-most wall of the groove is tapered to aid in the release, and the section of the obturator forward of the groove has a larger diameter than the section aft of the groove. A curved groove acts to transition the fiber from a longitudinal to a substantially tangential direction. Furthermore, either a cone or sleeve extension is included to prevent the fiber from looping about the projectile. An ejectable aft closure plate is provided to seal the interior of the projectile during launch.
9 citations
Patent•
5 Jun 1998
TL;DR: In this article, the surface zones of the components of the obturator system are provided with a coating of a mechanically resistant material or a corrosion resistant and wear-proof metal or a metal alloy or ceramic.
Abstract: An obturation system for artillery weapons has a barrel base ring (6), a obturator ring (4) and a breech insert (3) forming part of breech (2). To avoid escape of hot propulsion gases between the obturator ring and the breech insert even under high pressures and firing frequencies, at least the surface zones of the components (3,4,6) of the obturator system are provided with a coating (7,8 and 9) of a mechanically resistant material or a corrosion resisting and wear-proof metal or a metal alloy or ceramic.
4 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 2 |
| 2013 | 2 |
| 2011 | 2 |
| 2004 | 1 |
| 2002 | 1 |
| 2000 | 1 |