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Helicopter rotor blade simulating transparent ice structure and integration method

A technology of helicopter rotor and integrated method, which is applied in the field of anti-icing/de-icing performance verification of helicopter rotor blades, and achieves the effect of easy processing and large margin

Pending Publication Date: 2020-02-07
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the technical problem of supplementing the surface near the leading edge of the blade and simulating the state of condensed transparent ice on the leading edge of the helicopter rotor blade, so as to conduct performance tests on the icing blade

Method used

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  • Helicopter rotor blade simulating transparent ice structure and integration method
  • Helicopter rotor blade simulating transparent ice structure and integration method
  • Helicopter rotor blade simulating transparent ice structure and integration method

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specific Embodiment approach

[0038] In the various drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention. see figure 1 , 2 , 3 are the simulated transparent ice structure and integration diagram of the helicopter rotor blade of the present invention. The specific implementation is as follows:

[0039] According to the analysis and calculation of the flow field under specific icing conditions or from the ice wind tunnel test of the ice type, the simulated transparent ice ice type and the transparent ice freezing area are obtained.

[0040] A low-density and high-strength ACCPMI-110 foam is selected as the material for simulating the transparent ice structure. The compressive strength of the material at room temperature is greater than 2.5MPa, the shear strength is greater than 1.5MPa, and the foam density is 110kg / m 3 . According to the previously obtained transparent ice-type digital modeling sim...

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Abstract

The invention belongs to the technical field of helicopter rotor blade ice preventing and removing performance verification and relates to a helicopter rotor blade simulating transparent ice structureand an integration method. The helicopter rotor blade simulating transparent ice structure is made of a light high-strength foam material. The material compressing strength under the normal temperature is no smaller than 2.5 MPa, the shearing strength is no smaller than 1.5 MPa, and the foam density is between 70 kg / m3 and 200 kg / m3. The light high-strength foam material is formed into the bladesimulating transparent ice structure. The shape of the inner surface is consistent with that of a blade surface simulating transparent ice area. The shape of the outer surface is obtained by means offlow field analysis and calculation under the specific icing condition or from the ice wind tunnel test of the ice type. The blade simulating transparent ice structure is bonded to the blade surface simulating transparent ice area. By means of the technology, material selecting and manufacturing of the simulating ice type and transparent ice type structure can be achieved, and the structure is integrated with a helicopter rotor blade, and used for simulating icing flight test check of the helicopter rotor blade under the dry air condition.

Description

technical field [0001] The invention belongs to the technical field of anti-icing / deicing performance verification of helicopter rotor blades, and relates to a helicopter rotor blade simulating transparent ice structure and an integration method. Background technique [0002] Helicopter has a wide range of uses in social life as an aircraft that can hover, take off and land. During the actual use of the helicopter, various natural environments and meteorological conditions will be encountered. Among them, under natural icing conditions, it is an important requirement for the helicopter to be able to perform tasks. [0003] In order to perform tasks under natural icing conditions, helicopters must be equipped with rotor anti-icing / de-icing systems, engine intake anti-icing systems, windshield anti-icing systems, etc. After the anti-icing system is installed, the helicopter can perform tasks in natural icing conditions as in dry air conditions. [0004] Dry Air: This is air...

Claims

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Application Information

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IPC IPC(8): B64F5/60
CPCB64F5/60Y02T90/00
Inventor 刘政赵德杨吴超林长亮滕超刘博于馨皓胡伟奚宽阳李野
Owner HARBIN
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