Sensor capable of continuously measuring ablation

Abstract

The invention relates to a sensor capable of continuously measuring ablation, which comprises a sensitive component, a clogged block, a shell, a printed board assembly, a rear cover, a cable and a connector, wherein the sensitive component comprises a lead, a core wire, an insulating base, a capillary, a winding and filler material. In the invention, wire winding technology is adopted to wind wires on the core wire evenly and densely, and then the filling material is filled between the wound wire and the core wire to form the sensitive component, one end of the sensitive component is insert into the shell and fixed with the clogged block; then the lead wire of the sensitive component is connected to the printed board assembly, signals are led out through the cable and the connector; after the rest space in the shell is filled with glue solution, the shell and the rear cover are welded. The sensor capable of continuously measuring ablation has the characteristic of continuous measurement, and can output signals which are in direct proportion to the ablation thickness of a heat shielding layer. According to the invention, an ablative material used in manufacture does not need to be in the same batch with the heat shielding layer, thereby reducing cost and shortening production period; the measurement accuracy is improved greatly, and the integral damage to the heat shielding layer is very small.

Description

technical field [0001] The invention relates to a continuous measurement ablation sensor, which belongs to the field of aerospace sensors. Background technique [0002] Ablation sensors are special measuring devices mainly used in aerospace engineering experiments. With the progress of aerospace engineering, its use has become more and more important, and it has independently developed into a branch in aerospace engineering instruments. [0003] The ablation sensor is specially developed to measure the ablated thickness of the heat shield during reentry of the aircraft. The measurement of the ablation parameters of the heat shield is one of the important parameters for the overall design of the warhead, and it is a powerful basis for the design and finalization of the warhead. [0004] The ablation sensors currently used on bombs are divided into two categories: large-area ablation measurement and end cap stagnation point ablation measurement according to the different mea...

AI Technical Summary

Problems solved by technology

[0009] (1) Only a few measuring point data within a certain measurement range can be obtained

[0010] (2) When installing and using, it is necessary to drill installation holes above Φ12mm on the heat-proof layer for assembly, which will greatly damage the integrity of the heat-proof layer

[0011] (3) The measurement substrate of the sensor must be processed with the ablation material of the same process as the heat-proof layer to be tested, which has high cost and long production cycle

[0012] (4) The sensor is bulky and heavy, and needs to be equipped with a converter, which occupies the payload of the aircraft and wastes the internal space of the aircraft

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