RESEARCH ON MOISTURE ABSORPTION MECHANISM AND WAVE-TRANSIMISSIVITYPROPERTIES OF QUARTZ FIBER REINFORCED RADOME

Abstract

Abstract: Quartz fiber reinforced silicon dioxide composites have good wave transmission performance. But, due to its strong moisture absorption performance, the dielectric loss of the material increases after moisture absorption. The wave transmission performance of radar seeker antenna decreases obviously when passing through radome. In this paper, theoretical analysis and numerical simulation are used to analyze the dielectric loss of quartz fiber reinforced silicon dioxide composites after moisture absorption. The increase of dielectric loss is the main factor leading to the decrease of the performance of seeker antenna. Based on the preparation technology of quartz fiber reinforced radome, the moisture absorption factors of radome are analyzed. The relationship between the transmission efficiency and dielectric properties of radome after moisture absorption is analyzed by using the theory of dielectric slab transmission theory. The wave-transimissivity of a radome is simulated using the physical optics, and the conclusion that the dielectric loss tangent affects the wave transmission of radome is obtained. Then a radome is prepared and placed in the room with normal temperature environment, and its moisture absorption law is observered. Finally, the radome′s wave transmission performance is tested with the seeker antenna, which verifies the conclusion that the radome′s wave transmission efficiency decrease as a whole after absorbing moisture. Finally, the anti-moisture way of the radome is discussed and several moisture-proof schemes are proposed.

Key words: radome, composite, moisture absorption, wave-transmitting

CLC Number:

TB332

WANG Chuan-bing, NA Wei, ZHUANG Ling, CHEN Feng-bo. RESEARCH ON MOISTURE ABSORPTION MECHANISM AND WAVE-TRANSIMISSIVITYPROPERTIES OF QUARTZ FIBER REINFORCED RADOME[J]. Fiber Reinforced Plastics/Composites, 2019, 0(5): 94-101.

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