Full free-flying wind tunnel test mechanism for sub-cluster separation

Abstract

The invention discloses a cluster munition separation free flight wind tunnel testing mechanism. The cluster munition separation free flight wind tunnel testing mechanism comprises a blocking rod, a transmission mechanism, a positioning block, a spring mechanism and an unlocking mechanism. The blocking rod comprises a positioning plate and a shaft rod, wherein one end of the shaft rod is provided with a positioning plate and arranged in the axis position at the rear end of a primary munition head part, and a curved surface head is arranged at the other end of the shaft rod. After a thrust mechanism is installed behind the blocking rod. The transmission mechanism comprises two or more small push rods and large push rods, wherein the small push rods are arranged on the head portions of the large push rods respectively, the rear ends of the large push rods penetrate through the positioning block to be connected with the spring mechanism, the large push rods and the large push rods are coaxial, grooves used for positioning and clamping bullets are formed in the large push rods, the positioning block is arranged on the primary munition, the spring mechanism is arranged on the rear portion of a primary munition middle section, the unlocking mechanism is connected with a transmitting mechanism, and the unlocking mechanism is assembled on the spring mechanism. The whole cluster munition separation free flight wind tunnel testing mechanism has the advantages of being reliable in performance, rapid in reaction, reasonable in design, convenient to machine and install, compact in structure, high in space utilization rate and the like.

Description

Technical field: [0001] The invention relates to the support and launch of a wind tunnel test model, in particular to a fully free-flying wind tunnel test mechanism for separation of submunitions and bombs, and belongs to the field of aerospace engineering. technical background: [0002] Submunitions have the advantages of large killing range and high damage efficiency. They are widely used in anti-cluster targets and are the preferred weapons and equipment for regional wars. The lethality of submunitions largely depends on the dispensing effect of bullets. How to effectively distribute bullets so that they can reach the preset distribution position is an important link in the development of submunitions. Therefore, it is necessary to carry out preliminary free flight test research. Since the free flight test models are generally small, and most of the parent bombs are relatively slender, and there are bullets in the slender parent bombs, the space left for the ejection me...

AI Technical Summary

Problems solved by technology

[0004] (1) When the bullet model is ejected with a single spring, the spring action point is near the center of mass of the bullet. This ejection method is not only time-consuming and laborious to install, but also difficult to control the speed and angular velocity of the model ejection. Multiple debugging tests are required before the test.

[0005] (2) When the bullet model is pushed by the four-bar mechanism, because the four-bar mechanism is unstable, and one power point cannot complete the flat throwing action of the model, the mechanism needs two power sources

This makes the model mechanism more complicated, and the model cannot be made small, the model ejection mechanism and the size of the required wind tunnel are increased accordingly, which is in contradiction with the conventional free-flying wind tunnel test, and it is difficult to realize the full-free flight test

[0006] (3) The operation principle of the single push rod release mechanism is simple, but because the entire mechanism rotates around one axis, it often causes the bullet to have a considerable additional angular velocity before it is released from the bin. If it needs to be applied to engineering, the mechanism needs to be improved

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