Rocket motor extendible nozzle exit cone
US4766657A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1986 |
| Grant date | Aug 30, 1988 |
| Priority date | — |
| Expiry date | Jun 20, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49346
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rocket motor extendible nozzle exit cone, in one embodiment, is made by folding a sheet stock (metal, etc.) development of a membrane in the form of a cone or conical frustum (with a straight meridian) in such manner involving the provision of a plurality of crease lines therein that the aft or larger diameter region of the membrane that is constructed by joining the two longitudinal edges may be collapsed for stowage with vastly reduced overall length, maximum diameter, and with substantially increased rigidity in comparison with the fully deployed unit. In other embodiments, the extendible nozzle exit cone is made as an integral, seamless, free-standing member. In the stowed condition of each of the embodiments, the material comprising the aft portion of the membrane is situated in multiple layers within the forward portion so that deployment is induced by forward-to-aft gas flow of the rocket motor within the cone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.