PROBLEM TO BE SOLVED: To rigidly connect a support leg and a radar dome to each other by engaging an engagement shaft part of the lower end part of a support leg with an engagement hole of the upper part of an airframe in such a manner as to be disengaged, and integrally forming the support leg and a circular shaft in such a manner as that the circular shaft diameter of the radar dome is larger than the space between the upper ends of the support legs to be taken as a support leg member. ;SOLUTION: When a circular shaft 22 is pushed in an engagement hole 23, a projection and a recessed groove 22a are a little elastically deformed to be engaged with each other, and a radar dome 20 and a support leg 21 are rotatably engaged with each other not to be easily slipped off. The engagement hole 23 is closed by the circular shaft 22, and in the assembled state, the lower surface of the radar dome 20 is substantially flush with the lower surface of the circular shaft 22 to be smoothly connected to each other. An engagement shaft part 21a integrated with the support leg 21 is inserted in an engagement hole part 11a provided in the air frame 11 to be fixed. Thus, the circular shaft 22 integrated with both support legs 21, 21 is rotatably fitted in the engagement hole 23 of the lower surface of the radar dome 20, and stopped by the recessed groove 22a and the projection 23a to assemble an airplane.;COPYRIGHT: (C)1998,JPO
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