FIELD: aircraft manufacture. SUBSTANCE: permanent construction joint has upper and lower joint profiles of center section connected respectively with upper and lower panels of wing by their weds. Joint includes also spars with vertical struts, bands, walls and ribs with their connecting members. Upper panel of wing is provided with cutouts for connecting members. Walls of spars have detachable sections extending from plane of joint as far as rib which is parallel to plane of joint. Web of upper joint profile of center section is located above upper panel of wing overlapping it. EFFECT: ease of assembly of aircraft due to sectional assembly of center section and wing in separate jigs followed by rejoining in general jig.
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