| 摘要 |
FIELD: aeronautical engineering. SUBSTANCE: lattice aerodynamic surface mainly designed for rockets has load-bearing frame of rectangular form with side members, root and tip planes and units for attachment of surface to shaft of control actuator and set of planes of different thickness arranged inside frame forming cellular lattice. Thickness of side members of load-bearing frame reduces towards tip portion of surface; root plane is thicker tip plane; thickness of lattice planes reduces towards tip portion of surface smoothly or discretely (version). Lattice planes are erected from prefabricated W-shaped plates of different thickness (smoothly or discretely) forming parallel rows beginning with root plane to tip plane of frame; prefabricated W-shaped plates are engageable with each other through bearing platforms. Load-bearing frame and set of W-shaped plates are interconnected by permanent joints: by welding or soldering. Root and tip planes of frame, its side members and planes of lattice have wedge-shaped pointing of leading and trailing edges; such pointing is symmetrical on planes of lattices. Units for attachment of surface to shaft of control actuator are located in welded portion of roof plane and are made in form of ears formed of bends of frame side members with load-bearing bracket brought out between bends. Load-bearing bracket is made in form of rigid truss. Ears are provided with through holes for securing the surface to shaft of control actuator. EFFECT: reduction of drag, facilitated manufacture of lattice surfaces as compared with prototype, increased load ratio enhancing rocket characteristics: geometric characteristics, power characteristics, dynamic properties including reduced hinged moment on actuator, reduced volume required for folded lattice surfaces, reduced mass of control actuator and rocket as a whole. 9 cl, 11 dwg |
