Ice shape measuring device and measuring method for icing wind tunnel test

Abstract

The invention belongs to the technical field of wind tunnel tests, and provides an ice shape measuring device and measuring method for an icing wind tunnel test. The measuring device comprises an insertion plate and a plurality of insertion pins; each insertion pin comprises a square tube section and a round tube section which are fixedly connected with each other; a plurality of insertion pin holes are formed in the insertion plate side by side, and the circular tube sections of the insertion pins penetrate through the insertion pin holes and can slide in the insertion pin holes; the square tube sections of the plurality of insertion pins are positioned on the same side of the insertion plate; and the upper planes of the square tube sections are coplanar with the upper surface of the insertion plate. The ice shape measuring device for the icing wind tunnel test is composed of the insertion plate and the movable insertion pins; and when the ice shape measuring device is used, the positions of the movable insertion pins only need to be set according to the molded line of a to-be-measured ice shape obtaining position model; and therefore, the inconvenience that a supporting plate needs to be prepared again before each measurement in the prior art is avoided. The measuring device disclosed by the invention is simple to operate and can be repeatedly used, so that test time consumption and test consumables are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of wind tunnel tests, in particular to an ice shape measurement device and a measurement method for icing wind tunnel tests. Background technique [0002] When the aircraft passes through the low-temperature cloud layer rich in supercooled liquid droplets at low speed, icing is prone to occur on the windward surface, which seriously threatens the flight safety of the aircraft. Carrying out aircraft model icing test in icing wind tunnel has become an important link in the design and verification of aircraft anti-icing system. [0003] In the aircraft model icing test, it is necessary to accurately obtain the 2-dimensional cross-sectional shape of the ice on the model surface (referred to as ice shape). The accuracy and speed of ice shape acquisition directly affect the quality and efficiency of the test. At present, the ice shape acquisition in the icing wind tunnel mainly adopts a hot knife cutting device. ...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the position of the ice shape to be measured is different on the surface of the model, and the line type of the model surface is different, the support plate used to support the graph paper and the notch shape line at the front end of the graph paper in the test are also different, so In each test, it is necessary to prepare the support plate and graph paper in advance, so that the gaps of the support plate and the graph paper are consistent with the surface molding line of the model at the position to be tested; this leads to a long preparation process for ice shape measurement and a large amount of test materials. waste of

[0006] 2. If it is necessary to temporarily increase the position of the ice shape to be measured during the test, there is no way to accurately measure the temporarily increased position of the ice shape to be tested because there is no support plate and graph paper that are consistent with the model line on the surface of the model to be tested.

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