Pulley type structure high lift device for dual-arc sliding rail

Abstract

The invention discloses a pulley type structure high lift device for a dual-arc sliding rail, which comprises a dual-arc sliding rail, a pulley, a bracket and a flap, wherein the bracket is connected below the flap and connected with the pulley, the pulley is positioned in a sliding rail groove in the dual-arc sliding rail to ensure that the dual-arc sliding rail can slide on the pulley; the dual-arc sliding rail comprises a connecting member, a first arc sliding rail section, a straight line sliding rail section, a second arc sliding rail section and a sliding rail groove; the connecting member is used for connecting the dual-arc sliding rail with the wings of an airplane; the connecting member, the first arc sliding rail section, the straight line sliding rail section and the second arcsliding rail section are sequentially connected to form the dual-arc sliding rail, the sliding rail groove is arranged at the middle of the sliding rail; and the straight line sliding rail section isused for smoothly transiting the first arc sliding rail section and the second arc sliding rail section. The position of the flap is determined by the sliding rail, larger recession quantity and deflection angle can be realized in limited space compared with other mechanisms, and the lift drag ratio of the airplane during taking off and landing is increased.

Description

Technical field [0001] The invention belongs to the field of aviation structures, and specifically relates to a double-arc slide rail slide rail pulley type structure lifting device. Background technique [0002] Flaps are commonly used on various aircraft. They can increase the lift of an aircraft in a short period of time. They are mainly used during takeoff and landing of aircraft and in special emergencies. The multi-slit Fuller flap retreats to a large extent while the flap rudder surface is deflected, increasing the overall curvature and wing area of ​​the wing, and improving the boundary layer condition through the gap airflow, thereby obtaining an increased lift increase. Its lift-increasing effect is much superior to other types of flaps, and it has been used on many large and medium-sized transport aircraft abroad. Moreover, foreign countries have strictly restricted our country's technology in this field. In China, due to the relatively backward development of tr...

AI Technical Summary

Problems solved by technology

But since there is only one radius, it is equivalent to Figure three In the mechanism, the dimensions of the AB and CF rods are determined, and they can only guide the flaps to reach the two positions accurately

[0009] Non-arc slide rails are generally straight line + arc slide rails. The radius of this slide rail is variable, so the flaps can reach the required three positions, but due to the complex shape of the track, it is easy to get stuck

[0010] The helical slide rail can well realize the spatial guidance of each position, but its processing is complicated and the cost is high, so it is only used by a few models

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