Block foam method of accomplishing ignition mitigation in aircraft fuel tanks

    公开(公告)号:US09849998B2

    公开(公告)日:2017-12-26

    申请号:US14851511

    申请日:2015-09-11

    摘要: A process method utilizing customized, specifically-shaped pieces of reticulated polyurethane foam (RPF) to fill an aircraft fuel tank or tank compartment to provide ignition mitigation and prevent explosion in the tank. The process involves inserting the shaped pieces of RPF through existing access ports into a fuel tank in order to fill the tank, excepting minimal planned void spaces. This process effects ignition mitigation by acting as an ignition blocker, mechanically interfering with the compression wave that precedes the flame front in an explosion, and changing the vaporous mixture above the fuel level (ullage) in the tank. The foam pieces are assembled and fitted together throughout the tank in a pattern that replicates the shape of the tank. After the foam insertion is complete, the fuel tank is filled with purging fluid, drained through a filter until no debris is found, and the new maximum fuel quantity is recalibrated.

    Closure system
    5.
    发明授权

    公开(公告)号:US09731595B2

    公开(公告)日:2017-08-15

    申请号:US14128149

    申请日:2012-04-27

    申请人: Hartmut Wolf

    发明人: Hartmut Wolf

    IPC分类号: B65D43/04 B60K15/04 B60K15/03

    摘要: The invention relates to a closure system on a fuel tank (2) of thermoplastics with barrier properties for hydrocarbons. The closure system comprises at least one orifice (4), with a closure cap (5) which closes the orifice (4) in a sealing manner and which cooperates in a form-fitting manner with closure means provided at the circumference of the orifice (4) and encloses at least one first sealing means between it and a tank wall (3). The closure system (1) according to the invention is distinguished in that the tank wall is sealed in the region of the orifice (4) with at least one second sealing means, which covers and/or shields a part of the tank wall surfaces exposed to hydrocarbons.

    ATTACHING STRUCTURE OF INSERT MEMBER TO BLOW MOLDED ARTICLE
    10.
    发明申请
    ATTACHING STRUCTURE OF INSERT MEMBER TO BLOW MOLDED ARTICLE 审中-公开
    插件成员连接到吹塑制品的结构

    公开(公告)号:US20150239198A1

    公开(公告)日:2015-08-27

    申请号:US14191221

    申请日:2014-02-26

    申请人: FTS CO., LTD.

    IPC分类号: B32B1/08 F16L23/12 B32B3/26

    摘要: An attaching structure for attaching an insert member to an outer wall of a blow molded article by embedding the insert member therein, which is readily produced and exhibits a great holding strength against the insert member. In an attaching structure of an insert member for attaching the insert member to an outer wall of a blow molded article by embedding at least one part of the insert member therein, the insert member includes a cylinder part adapted to penetrate the outer wall of the blow molded article, and a flange part protruding from an exterior surface of the cylinder part in a width direction thereof. The flange part is embedded in the outer wall of the blow molded article and includes a plurality of through holes adapted to flow a parison into the plurality of through holes during blow molding, thereby fusion-bonding both surfaces of the flange part with the parison, and after the parison is hardened, a flange cover part is integrally formed with an outer wall of the insert member to hold the flange part.

    摘要翻译: 一种用于通过将插入构件嵌入其中而将插入构件附接到吹塑成型制品的外壁的附接结构,其容易地制成并且对插入构件具有很大的保持强度。 在插入构件的安装结构中,用于通过将插入构件的至少一部分嵌入其中而将插入构件附接到吹塑成型制品的外壁,插入构件包括适于穿过吹气外壁的气缸部分 模制品以及从缸部的外表面沿其宽度方向突出的凸缘部。 凸缘部分嵌入吹塑成型制品的外壁中,并且包括多个通孔,其适于在吹塑过程中将型坯流入多个通孔中,从而将凸缘部分的两个表面与型坯熔合, 并且在型坯硬化之后,凸缘盖部分与插入件的外壁一体地形成以保持凸缘部分。