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Snowfall environment simulation system and method for aviation aircraft test

A technology for environment simulation and aviation aircraft, which is applied in aerodynamic tests, simulators for space navigation conditions, and simulators. The effect of the experiment cycle

Active Publication Date: 2021-12-24
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention patent provides a way to further study the law of snow infiltration, and the use effect is good, but it cannot be applied to the simulation of snowfall environment for large equipment such as aviation aircraft

Method used

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  • Snowfall environment simulation system and method for aviation aircraft test
  • Snowfall environment simulation system and method for aviation aircraft test
  • Snowfall environment simulation system and method for aviation aircraft test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a snowfall environment simulation system for aviation aircraft testing includes an experimental cabin 1 for accommodating aviation aircraft, 4 groups of snowmaking machines 2 located at 4 corners inside the experimental cabin 1, and in front of each group of snowmaking machines 2. The diversion barrier 3, the snow machine 2 is a commercially available ESB-A8 snow machine;

[0039] Such as Figure 1-5As shown, the front end of the snowmaking machine 2 is provided with a movable nozzle 21, and the diversion barrier 3 is arranged in an arc shape. The middle part of the diversion barrier 3 is provided with an opening 31 corresponding to the front end of the nozzle 21. 31 Rotate and slide the guide cover 4, the guide cover 4 is a cylinder formed by splicing several guide blades 41, the upper and lower sides of the guide cover 4 are respectively provided with a set of limit blocks 42 for fixing the guide blades 41, each set A group of rotating sha...

Embodiment 2

[0050] This embodiment is basically the same as Embodiment 1, except that the sound-absorbing baffle 5 and the diversion barrier 3 are set at an angle of 15°, and the experimental parameters in steps S1 and S2 are different.

[0051] S1: Place the aircraft to be tested in the middle of the experimental cabin 1, and arrange the snow machine 2 around the aircraft. The snow machine 2 should leave a sufficient safe distance from the wall of the experimental cabin 1 and the aircraft. The safe distance is 3m from the snow machine 2 to the wall. And the snow gun 2 is 20m away from the aircraft;

[0052] S2: According to the type of snowfall required, set the target temperature of the experiment to -20°C, and start to cool down at a rate of 3°C / h.

Embodiment 3

[0054] This embodiment is basically the same as Embodiment 1, except that the sound-absorbing baffle 5 and the diversion barrier 3 are set at an angle of 30°, and the experimental parameters in steps S1 and S2 are different.

[0055] S1: Place the aircraft to be tested in the middle of the experimental cabin 1, and arrange the snow machine 2 around the aircraft. The snow machine 2 should leave a sufficient safe distance from the wall of the experimental cabin 1 and the aircraft. The safe distance is 3m from the snow machine 2 to the wall. And the snow gun 2 is 15m away from the aircraft;

[0056] S2: According to the type of snowfall required, set the target temperature of the experiment as 5°C, and start to cool down at a rate of 1°C / h.

[0057] In embodiment 1-3, according to the snowfall temperature condition that the present invention provides and cooling speed select suitable safety distance, when temperature condition is lower, cooling speed is accelerated correspondingl...

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Abstract

The invention discloses a snowfall environment simulation system and method for an aviation aircraft test, and belongs to the technical field of aircraft tests. The simulation system comprises an experiment bin used for containing an aviation aircraft, four sets of snowmakers located at the four corners in the experiment bin, and a flow guide barrier located in front of each set of snowmakers. An opening is formed in the middle of each flow guide barrier corresponding to the front end of a spray pipe, a flow guide cover capable of rotating and sliding along the opening is arranged in the opening, a plurality of sound absorption baffles for absorbing noise are arranged on the inner surface of the flow guide barrier, and two sets of collecting bins for collecting snowflakes are arranged in the middle of the inner surface of the flow guide barrier. The simulation method comprises the following steps: S1, arranging the system; S2, adjusting the temperature; S3, adjusting the snowmaking amount; S4, adjusting the water content; S5, adjusting visibility and snowflake particle size; and S6, evaluating the snowfall strength. According to the snowfall environment simulation method, snowfall environment parameters are stable and controllable, the adjustable range of the environment parameters is wide, simulation can be conducted repeatedly, the method is not affected by natural conditions, and the experiment cost is saved.

Description

technical field [0001] The invention relates to the technical field of aircraft testing, in particular to a snowfall environment simulation system and method for aviation aircraft testing. Background technique [0002] Aviation is a complex and strategic human activity, which refers to the flight (navigation) of aircraft in the earth's atmosphere (air space). Aviation aircraft is the most common aircraft, occupying an important role in the fields of public transportation, aviation sports, national defense and military affairs. important position. [0003] The testing and research of aviation aircraft has been continuously carried out, and the dedicated climate laboratory is an important prerequisite for carrying out aviation aircraft experiments. The purpose of testing the performance of aviation aircraft is achieved by simulating various climatic and environmental conditions through the dedicated climate laboratory. . [0004] Civil aircraft is the most widely used aircra...

Claims

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Application Information

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IPC IPC(8): G01M99/00G01M9/00B64F5/00G09B9/00G09B25/00
CPCG01M99/005G01M9/00B64F5/00G09B9/00G09B25/00
Inventor 吴敬涛王彬文任战鹏王嘉玺唐扬刚
Owner CHINA AIRPLANT STRENGTH RES INST
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