| 摘要 |
fan engineering; heat-control systems primarily for space equipment. SUBSTANCE: fan assembling process includes installation of bushing inside fan case, alignment of centers of spherical surfaces of bosses and those of bushing projections, locking of bosses within case, installation of motor and impeller, adjustment of clearance between impeller blades and case, relative positioning of case, bosses, and bushing by making radial holes on side of cylindrical case through boss and bushing projection, and their pinning together. EFFECT: reduced fan noise. 2 cl, 3 dwg |
