Aiming at the difficulty of choosing stealth materials in stealth aircraft, this paper firstly obtains the traveling wave suppression coefficient and reflection loss values of stealth materials with different dielectric parameters by simulation, and then conducts the reduction effect of the whole RCS of the aircraft attached with different dielectric parameters graphene materials. Simulate and find the thermal centers in the forward, backward and lateral directions, and finally select the appropriate travel wave suppression coefficient and reflection loss of the stealth material based on the thermal center obtained by the RCS simulation, so as to develop the optimal stealth material.
Reflectivity is an important indicator in the development process of absorbing materials. However, for low frequency, the RCS reduction of materials with the same reflectivity is very different when they are applied to stealth aircrafts. It is impossible to comprehensively measure the absorbing performance of materials only using reflectivity indicators. In the research process, using the reflectivity and surface wave calculation formula, the difference of traveling wave suppression coefficient under the condition of equal reflectivity is found theoretically, and the accuracy of the conclusion is verified from the perspective of electromagnetic simulation. The research shows that in the relative dielectric constant set with equal reflectivity -10dB, the thickness of 30mm, frequency of 0.5GHz, the combination of the maximum suppression of traveling wave is at the position of the minimum value 20.93 of the real part and the middle value 7.89 of the imaginary part.
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