A metallic positive expulsion fuel tank with stress free weld seams may include a first hemispherical shell with a first edge; and a hemispherical rolling metal diaphragm with a first edge attached to the first hemispherical shell along matching first edges. A second hemispherical shell with a first edge may be attached to the first edge of the first hemispherical shell by a first weld seam thereby forming two interior chambers separated by the hemispherical rolling metal diaphragm. A pressurized gas inlet may be attached to the first hemispherical dome; and a fuel outlet fixture may be attached to the second hemispherical dome. The first weld seam may have been stress relieved by a localized post-weld heat treatment confined to an immediate vicinity of the first weld seam.


    Access

    Download


    Export, share and cite



    Title :

    Stress relieved welds in positive expulsion fuel tanks with rolling metal diaphragms


    Contributors:

    Publication date :

    2019-11-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B23K Löten , SOLDERING OR UNSOLDERING / B64G Raumfahrt , COSMONAUTICS / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen



    STRESS RELIEVED WELDS IN POSITIVE EXPULSION FUEL TANKS WITH ROLLING METAL DIAPHRAGMS

    BALLINGER IAN / TUTTLE WAYNE H | European Patent Office | 2016

    Free access

    STRESS RELIEVED WELDS IN POSITIVE EXPULSION FUEL TANKS WITH ELASTOMERIC DIAPHRAGM

    TUTTLE WAYNE H / BALLINGER IAN | European Patent Office | 2017

    Free access

    Stress relieved welds in positive expulsion fuel tanks with elastomeric diaphragm

    TUTTLE WAYNE H / BALLINGER IAN | European Patent Office | 2018

    Free access