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Vertical high-speed ejection device for ice crystal impact test

A technology of ejection device and impact test, which is used in measurement devices, material thermal analysis, instruments, etc.

Active Publication Date: 2022-05-06
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the key technical problem in the calculation of ice crystal icing in the ice crystal impact test bench is the qualitative measurement of the surface characteristics of ice crystal impact

Method used

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  • Vertical high-speed ejection device for ice crystal impact test
  • Vertical high-speed ejection device for ice crystal impact test
  • Vertical high-speed ejection device for ice crystal impact test

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Embodiment Construction

[0054] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0055] see figure 1 , Figure 1A , Figure 1B , Figure 1C As shown, an ice crystal impact test bench of the present invention includes a frame structure 100 constructed of aluminum alloy profiles, a vertical high-speed ejection device 200, an impact structure 300, a cooling pipeline for providing a low temperature environment, and an impact Angle adjustment controls.

[0056] In the present invention, the cooling pipeline in the low-temperature environment is composed of a refrigeration compressor set and a copper tube radiator. The power of the refrigeration compressor is 2000W, the minimum refrigeration temperature is -30°C, and the refrigerant is Juhua R404A. In order to reduce the speed at which cold energy diffuses to the outside and ensure cooling efficiency, except for the optical path, insulation cotton is filled between the inner and outer fram...

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Abstract

The invention discloses a vertical high-speed ejection device for ice crystal impact test, which comprises a spray pipe (1), an upper end assembly (2), a lower end assembly (3), a stepping motor (4) and an ejection angle adjustment member ( 5); the injection pipe (1) is installed on the ejection angle regulator (5), the top of the injection pipe (1) is the upper end assembly (2), and the bottom of the injection pipe (1) is the lower end assembly (3). The vertical high-speed ejection device is a scientific research device that can observe the phenomenon of high-speed impact between ice crystal objects and impact panels (300C). The vertical high-speed ejection device can realize the directional high-speed movement of ice crystal objects within the impact distance of less than or equal to 500mm in the low temperature environment of -30°C, and finally collide with the impact panel (300C), and the impact angle is in the range of 10° to 90° Internally adjustable.

Description

technical field [0001] The invention relates to an ice crystal impact test bench, in particular to a vertical high-speed ejection device for the ice crystal impact test. Background technique [0002] Aircraft icing is one of the serious problems that threaten flight safety, and flight accidents caused by icing occur from time to time. Icing is the phenomenon of ice accumulation caused by ice crystals contained in clouds or supercooled water droplets (which remain liquid at temperatures below 0°C) hitting the surface of aircraft components. [0003] In the early 1990s, incidents of commercial aircraft engine failures caused by high-altitude ice crystals attracted people's attention. Mason reviewed 240 icing accidents from 1990 to 2006, 62 of which were loss of turbofan engine power due to ice crystal icing. Since then, the research on ice crystal freezing has gradually begun. In 2011, NASA sorted out the icing research framework under engine high ice-water content (High Ic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/14
CPCG01N25/145
Inventor 卜雪琴黄平林贵平郁嘉
Owner BEIHANG UNIV
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