Through-canopy ejection simulation method
A simulation method and cover-piercing technology, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effects of reducing development costs and development risks, simplifying tests, and shortening development cycles
Inactive Publication Date: 2015-11-04
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology
At present, there is no simulation of the entire canopy ejection process in China. The cracking of the transparent part of the canopy and the overload of the ejected occupant during the canopy penetration process are simulated, so as to optimize the parameter design of the ejection seat and the transparent part of the canopy.
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[0017] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.
[0018] Such as figure 1 As shown, a simulation method for piercing and ejection provided by the present invention includes the following steps:
[0019] Step 1. Select the simulation objects as the cutting device, the target to be cut, the transparent part of the canopy, the ejection seat and the ejection crew. Wherein, the cutting device can be selected as a micro blasting cord or a cutting cord as required.
[0020] Step 2: Optimizing the matching between the dose of the cutting device and the material and thickness of the cut target by means of simulation (using DYNA software).
[0021] Step 3: Establish the geometric model of the canopy transparent part and the ...
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The invention relates to the field of plane ejection lifesaving, in particular to a through-canopy ejection simulation method, and by means of the method, the whole through-canopy ejection process can be simulated. According to the through-canopy ejection simulation method, application and expansion can actually start from matching simulation between explosive quantity of a micro detonation cord or cutting rope and thickness of targeted materials to be cut to conduct cockpit canopy breakage situation simulation; then simulation of the whole through-canopy ejection process is conducted, so that a physical test on matching between the explosive quantity of the cutting rope and the thickness of the targeted materials to be cut can be simplified and replaced, and a basis is provided for determination of the through-canopy ejection test state; meanwhile, a part of through-canopy ejection test is simplified, the ejection lifesaving system development cost and risk are lowered, and the system development cycle is shortened.
Description
technical field [0001] The invention relates to the field of aircraft ejection lifesaving, in particular to a simulation method for ejection through a cover. Background technique [0002] For the simulation of the ejection through the cover, the main work currently being carried out in China is to use the transient dynamics method to simulate the matching simulation of the charge of the micro-explosive cable and the thickness of the transparent part of the canopy. At present, there is no simulation of the entire canopy ejection process in China. The cracking of the transparent canopy and the overload of the ejected occupant during the canopy are simulated, so as to optimize the parameter design of the ejection seat and the transparent canopy. Contents of the invention [0003] The purpose of the present invention is to provide a simulation method for the ejection through the cover, which can simulate the whole process of the ejection through the cover. [0004] Technical ...
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IPC IPC(8): G06F17/50
Inventor 关焕文封文春黄绍斌朱永峰
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA