Mitsubishi Aircraft Corporation

Atsuhiro Iyomasa

Hideo Yamakoshi

Toru Hashigami

Yuji Asahara

Yasunori Watanabe

Yuichiro Kamino

Wataru Nishimura

Takeyasu Tarumi

Hiroshi Rikukawa

Koji Kawahara

Tomonori Okumura

Hideo Imamura

Naoki Taniguchi

Jun Kawaguchi

Kengo Nomiya

Noritomo Takata

Soichiro Umemoto

Kohei Murakami

Tooru Hashigami

To provide a jig for forming a sealant layer which enables to quickly and accurately form a sealant layer having a required film thickness. The jig includes: a sealant cupthat overlays a sealantaround a collar; a cup holderthat determines a position of the sealant cupwith respect to a fastener member; and a dummy cupthat determines a position of the cup holderwith respect to the fastener member. The cup holderis determined in position with respect to the fastener memberby being guided along the dummy cupdetermined in position with respect to the fastener member. The sealant cupis guided along a guide of the cup holderso as to overlay the sealantaround the collarafter removing the dummy cupfrom the cup holderdetermined in position with respect to the fastener member

Jig for forming sealant layer for lightning protection fastener, method for forming sealant layer for lightning protection fastener, and wing of aircraft

To provide a lightning protection fastener or the like, that can reliably seal an arc between the cap and a member such as a wing panel. An end partA of a capon an opening side, the end partA facing a member(or member), includes a planeorthogonal to an axis line of the capA and a tapered faceformed on an outer circumferential side of the plane. A sealantthat spills out of the capA upon mounting the capA is present between the tapered faceand a surfaceof the member(sealantS).

Lightning protection fastener and cap for lightning protection fastener

Provided is a coupling structure for airframe components that is capable of ensuring sufficient lightning protection capability. A conductive pattern partmade of a conductive material is formed around each fastener memberbetween wing surface panelsA andB. The conductive pattern partis formed, for example, around each of holesandon the plane on which the wing surface panelA and the wing surface panelB abut against each other. Then, the conductive pattern partis pushed against both the wing surface panelA and the wing surface panelB by the fastening power of the fastener members, whereby electrical conduction between the wing surface panelA and the wing surface panelB can be achieved.

Coupling structure for airframe components

A sealantfilled into a capA is caused to overflow through both an opening in a first end portionof the capA and a through-holeof the capA when the capA is pressed against a fastener member. With regard to the capA, a ratio between inside diameter Dof the opening on the side of the first end portionand hole diameter Dof the through-holein the second end portionis set as follows: 0.10&#x2266;D/D&#x2266;0.27.

Lightning protection fastener and mounting method thereof

In an insulating coverA according to the present invention, a dimension of each of an outer-circumferential-side cylindrical partand an inner-circumferential-side cylindrical partfitting in step partsandin an axial direction of a fastener bodyis set large with respect to a tip covering partcovering a tip surfaceof a fastening member. As a result, on an outer circumferential side and an inner circumferential side of the fastening member, a distance from a memberis sufficiently ensured by the cylindrical partand. The tip covering partis thinner than the cylindrical partB and. Therefore, when the fastener bodyand the fastening memberare fastened together, the amount of deformation of the tip covering partin a thickness direction can be made small.

Lightning-protective explosion-preventive fastener

A long-life lightning protection fastener or the like to prevent explosion for aircrafts at low cost is provided, the fastener having a light weight, ensuring sufficient lightning protection, and having extremely less failures and high reliability. A ring-shaped ring memberA made of resin is mounted on a collar. This ring memberA is interposed between a memberand the collarand is in intimate contact with both of the memberand the collar, thereby sealing an interface with the memberfor sealing and preventing the occurrence of an arc at an outer perimeter edge of the collar

Lightning protection fastener, aircraft assembly, and method of manufacturing aircraft assembly component

Growing community of inventors

Tokyo, Japan

Atsuhiro Iyomasa