Aerocraft radiation intensity calculation method based on similarity scale

Abstract

The invention provides an aerocraft radiation intensity calculation method based on the similarity scale. Firstly a shrinking scale model of the aerocraft which is M times the size of the actual aerocraft is built, the temperature boundary condition and the pressure boundary condition of the shrinking scale model are both consistent with those of the actual aerocraft, then through the calculation formula of the radiation intensity, a similarity criterion formula (the formula is described in the application) of the radiation intensity is built, wherein I lamba, basic is the radiation intensity of the actual aerocraft, I lambda, ratio is the radiation intensity of the shrinking scale model of the aerocraft, finally through the calculation formula of the radiation intensity, the radiation intensity I lambda, ratio of the shrinking scale model is calculated, and when the radiation intensity I lambda, ratio is substituted into the similarity criterion formula, the radiation intensity I lamba, basic of the actual aerocraft is obtained, through the formula, the radiation intensity of the actual aerocraft is calculated through the radiation intensity of the shrinking scale model.

Description

technical field [0001] The invention relates to the technical field of aircraft design, in particular to a method for calculating radiation intensity of aircraft based on similar scales. Background technique [0002] At present, aircraft development only has two design methods, simulation calculation and real aircraft dynamic flight test, but lacks the urgently needed scaling model test technology in the scheme design stage, resulting in the radiation characteristics of the aircraft can only be obtained through the dynamic flight of the real aircraft. [0003] Domestically, the radiation characteristics of aircraft are still in the exploratory stage. In terms of research methods, due to the lack of verification, the calculation accuracy of simulation software cannot be guaranteed. Due to the difficulty, high cost and low efficiency of the dynamic flight test, the 1:1 model processing cost in the ground test is high, and the manufacturing cycle is long, so the investment is s...

AI Technical Summary

Problems solved by technology

This makes the development of the aircraft a relatively large technical risk. Once the dynamic aircraft test finds that the radiation characteristics of the aircraft cannot meet the index requirements during the flight test verification stage in the later stage of aircraft development, a huge price will be required to change the plan in terms of time and cost.

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