Method of manufacturing an inflatable air inlet duct

Details Method of manufacturing an inflatable air inlet duct Method of manufacturing an inflatable air inlet duct

1978-07-05

1980-01-29

Combs, E. M.

Metal working

Method of mechanical manufacture

Utilizing transitory attached element or associated separate...

B64D 3302

Patent

active

041853733

ABSTRACT:
An air inlet duct for a jet propulsion missile or other vehicle which is movable between a housed, pre-launch position and an extended or deployed flight position. A method of manufacturing the duct is also disclosed. The duct system includes a flexible leading edge attached to a double-wall inflatable duct body. Drop threads extend between the duct body walls to hold an exact desired contour when the duct is inflated. A pivotable plate moves the inflatable duct between a housed, deflated, position and an inflated flight position. Manufacture of the inflatable duct is basically accomplished by preparing a foamed plastic form in the desired duct wall shape, covering the form with fabric, stitching through the foam and fabric, coating the fabric with a flexible sealing compound, dissolving away the foamed plastic and attaching the resulting inflatable duct to other missile components.

REFERENCES:
patent: 2937826 (1960-05-01), Johnson
patent: 2979287 (1961-04-01), Ross
patent: 3074232 (1963-01-01), Soyer
patent: 3119581 (1964-01-01), Trevaskis
patent: 3208132 (1965-09-01), Escher
patent: 3290762 (1966-12-01), Ayuzawa et al.
patent: 3316626 (1967-05-01), Fredericks
patent: 3338049 (1967-08-01), Fernberger
patent: 3482783 (1969-12-01), Nebiker et al.
patent: 3494380 (1970-02-01), Martin
patent: 3659424 (1972-05-01), Polk

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