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Vertical pneumatic optical effect analog device

A technology of aero-optics and simulation devices, which is applied in the field of aero-optics, can solve problems that are not directly simulated, and achieve the effect of increasing the simulation range

Inactive Publication Date: 2017-02-15
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many aero-optical effect simulators are optical simulators, such as the invention patent with application number 201410456264.8 "Aero-optical effect simulator based on distorted images", and algorithm simulation, such as the invention patent with application number 201310193486.0 "A Simulator Methods and systems for aero-optical effects", these simulation devices or methods do not directly generate the air flow that produces aero-optical effects, so they belong to indirect simulations, not direct simulations, so there is still a difference from the actual aero-optical effects

Method used

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specific Embodiment 1

[0031] The vertical aero-optical effect simulation device of this embodiment, the structural schematic diagram is as follows figure 1 shown. The vertical aero-optical effect simulation device includes a blackbody 1 with an upward opening, and a tank body 2 with an opening downward above the blackbody 1. The opening of the blackbody 1 and the opening of the tank body 2 are connected by a telescopic structure 3, and the telescopic structure 3. There is an iris aperture structure 4 inside;

[0032] The black body 1 includes a ceramic layer 11, an intermediate layer 12, a cooling layer 13 and an outer shell 14 from the inside to the outside; the middle layer 12 is provided with a resistance wire, and the inner wall is provided with a temperature sensor, and the cooling layer 13 is filled with water. ; The schematic diagram of the structure of Heibody 1 is as follows: figure 2 shown;

[0033] The top of the tank body 2 is provided with an opening, and a cover 5 is provided on t...

specific Embodiment 2

[0037] The vertical aero-optical effect simulation device of this embodiment is further defined on the basis of the specific embodiment one to include a water tank 6 and a water pump 7. The top and bottom of the cooling layer 13 each have an outlet, and the water pump 7 pumps the water tank 6 The water pumped into the outlet at the bottom of the cooling layer 13, and the water flows back to the water tank from the outlet at the top of the cooling layer 13, such as Figure 5 shown.

[0038] This structural design, utilizing the slow thermal conductivity of water, not only realizes the heat preservation of the ceramic layer 11 and the middle layer 12, ensures the stability of the aero-optical effect simulated by the aero-optical effect simulation device, but also realizes the cooling of the outer shell 14, Ensure experimental safety.

specific Embodiment 3

[0040] The vertical aero-optical effect simulation device of this embodiment, on the basis of the specific embodiment 1, further defines that the cover 5 is a furnace ring structure, including a plurality of annular rings with different diameters, nested in sequence, and with a stepped cross-section. like Image 6 as shown, Image 6 Shown is a schematic diagram of the superposition of three annular rings and the structure of the furnace ring after the superposition.

[0041] This structural design can adjust the opening size of the cover 5 by adjusting the number of annular rings, and then change the simulation effect of the aero-optical effect without changing other structures, parameters and technical indicators, thereby increasing the aero-optical effect of the present invention. The simulation range of the effect simulator.

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Abstract

The present invention provides a vertical pneumatic optical effect analog device, belonging to the pneumatic optical technology field. The device comprises a black body with an upward opening and a tank body with a downward opening and arranged at the upper portion of the black body, the opening of the black body and the opening of the tank body are connected through a telescoping structure, and the telescoping structure is internally provided with an iris aperture structure; the telescoping structure includes from inside to outside an inner layer extension tube, an insulating layer and an outer layer extension tube, the inner extension tube includes a non-extension end arranged at the middle portion and an extension tube connected with two ends of the non-extension end, and the iris aperture structure is installed on the non-extension end; and the iris aperture structure includes an annular ring, spindles uniformly distributed on the annular ring and arc-shaped metal blades rotating around the spindles, and the number of the spindles is the same as the number of the arc-shaped metal blades, and the number of the spindles at least have six. The vertical pneumatic optical effect analog device employs the feature of forming strong convection by using cold and hot gas to directly generate the airflow which generates the pneumatic optical effect so as to realize the purpose of direct analog of the pneumatic optical effect.

Description

technical field [0001] A vertical aero-optical effect simulator belongs to the technical field of aero-optics. Background technique [0002] When the aircraft flies in the atmosphere at high speed, due to the real gas effect between the optical hood and the free flow, the separation of the boundary layer induced by the shock wave, the mutual interference between the inviscid flow and the boundary layer, etc., resulting in changes in airflow density, temperature, etc. The complex flow field caused by changes in temperature, composition changes, and ionization of gas molecules will cause heat, thermal radiation, and image transmission interference to the infrared imaging detection system, causing target deviation, shaking, and blurring. This effect is called the aero-optical effect. [0003] The aero-optical effect has a negative impact on the infrared imaging terminal guidance, which reduces the ability of the seeker to detect, track and identify the target, and then affects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/00
CPCG01M9/00
Inventor 赵烟桥于博洋
Owner HARBIN UNIV OF SCI & TECH
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