Inflatable device for excluding sea water from a rocket motor
US5125318A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Dec 18, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02K9/978
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An inflatable water exclusion device for protecting the rocket motor of a lid-propellant-powered missile, launched from below the surface of the sea by means of launching gas, from being damaged by a spout of water spurting up into the atmosphere. The device consists of a round base plate that attaches to an expellable baffle assembly located within the throat of the rocket motor nozzle, and an inflatable elastomer-coated cloth bag that is attached to the rim of the base plate. As the missile ascends toward the surface of the sea, launching gas that was originally contained within the voids of the rocket motor expands and streams out through the nozzle thereby causing the bag to inflate. After the missile has breached the surface of the sea the rocket motor ignites, thereby causing the baffle assembly and the inflatable water exclusion device attached thereto to be expelled from the nozzle and fall back into the sea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.