Damage visualization
    11.
    发明授权

    公开(公告)号:US11679857B2

    公开(公告)日:2023-06-20

    申请号:US15689539

    申请日:2017-08-29

    摘要: A structural member for an aircraft or spacecraft has at least one fiber plastic composite, the fiber plastic composite having at least one or a plurality of plies. The structural member also has at least one pre-stressing means providing internal stresses to the fiber plastic composite. The fiber plastic composite and the pre-stressing means are configured and arranged to form a balanced system the internal stresses of which are essentially balanced to zero in a cured state of the said system. The balanced system of the structural member is able to counteract loading stresses exerted to the airframe in service such, that a damage caused by the loading stress is easily detectable visually.

    Dynamic sharing of aircraft's suspended loads

    公开(公告)号:US11673667B2

    公开(公告)日:2023-06-13

    申请号:US17497909

    申请日:2021-10-09

    申请人: Travis G. Storro

    发明人: Travis G. Storro

    IPC分类号: B64D1/22 B64C1/06 B64C27/04

    CPC分类号: B64D1/22 B64C1/061 B64C27/04

    摘要: To reduce strain and mitigate fatigue in an aircraft's airframe, some example dynamic load-sharing systems provide the aircraft with multiple tension devices that share the weight of a load hanging from the aircraft. In some examples, the tension devices are installed in the aircraft's cabin space to protect the surrounding airframe by transmitting a portion of the load's weight directly from the floor to the ceiling of the aircraft. In some examples, the portion of the weight transmitted by the tension devices is proportional to the load's total weight. In some examples, the tension devices are piston/cylinder devices that are interconnected by a manifold to distribute the load equally among the tension devices. Some examples of dynamic load-sharing system include a pressure relief valve and/or an accumulator that limits the maximum load applied to each tension device.

    AIRCRAFT REAR FUSELAGE SECTION AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20190185131A1

    公开(公告)日:2019-06-20

    申请号:US16225966

    申请日:2018-12-19

    IPC分类号: B64C1/12 B64C1/06 B64F5/10

    摘要: A lower fuselage shell for an aircraft rear fuselage section, wherein the lower fuselage shell is made of a composite material and comprises at least one lower skin and stringers integrally formed with the lower skin, and frame segments extending crosswise relative to the stringers. Shear-ties are co-cured or co-bonded with the lower skin and extend crosswise relative to the stringers. Frame segments are fastened to the shear-ties, such that the frame segments are distanced from the lower skin. An aircraft rear fuselage section comprises an upper fuselage shell and the described lower fuselage shell. The upper fuselage shell has an upper skin reinforced with omega-shaped stringers, and the lower shell has a lower skin reinforced with T-shaped stringers.