A Multifunctional Root Rib Used in Supersonic Wind Tunnel Full Motion Rudder Surface Model

Abstract

The invention provides a multifunctional root rib for the all-movable rudder surface model of a supersonic wind tunnel. The multifunctional root rib comprises a root rib body and reinforcing ribs. Each of the reinforcing ribs is of an arc-shaped structure which protrudes upwards. The reinforcing ribs are perpendicularly fixed to the upper end surface of the root rib body. Beam frame positioning clamp pieces are distributed on the upper end surface of the root rib body and the outer surfaces of the reinforcing ribs. An adapter used for being connected with a decoupling pin and a flange bolt fixing hole are arranged on the lower surface of the root rib body. The adapter is enabled to be perpendicular to the root rib body. The multifunctional root rib is simple in structure. The arc-shaped reinforcing ribs are arranged on the root rib body, so that the strength of the root part of a wing can be increased to the maximum degree. The beam frame positioning clamp pieces are arranged on the root rib body and the reinforcing ribs, and are used for fixing the beam frame of the wing. Therefore, the root rib body is fixedly connected with the beam frame of the wing. The bending moment and theshearing force on the beam frame of the wing are guaranteed to be transmitted to the root rib body to the maximum degree. The safety and reliability problem of the all-movable rudder surface model issolved, and the connection of the model with an external measuring device is facilitated.

Description

technical field [0001] The invention relates to the field of aeroelastic test devices, in particular to a multifunctional root rib used for a supersonic wind tunnel full motion rudder surface model. Background technique [0002] At present, my country's high-speed wind tunnels are all temporary wind tunnels, with high start-up speed and pressure, and large impact loads. It is difficult to meet the strength requirements of the wing under the premise of similar stiffness requirements. Increasing the strength will often increase the structural size. In cases where the quality of the model is similar and it is difficult to meet the requirements. Therefore, for hypersonic wings, in addition to ensuring the aerodynamic shape of the model, the structural stiffness and strength design of the model is also a key and difficult point in the design. Since the wing is currently generally made of composite material FRP with light weight and high rigidity as the design material, but at the...

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Problems solved by technology

Since the wing is currently generally made of composite material FRP with light weight and high rigidity as the design material, but at the root rib, especially at the joint between the rudder surface and the flange, stress concentration often occurs, which reduces the safety and reliability of the model, and in the wind In the hole test, the root rib usually needs to be connected with the test bench or external measuring device, which puts high demands on the root rib

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