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The size of the cross-section – a measure of how detectable an object is by radar – was revealed in a programme aired on state broadcaster CCTV on Saturday.
“As a stealth fighter, the J-35 series’ low observability comes from its unique airframe shape and the country’s proprietary metamaterial technology,” CCTV reported.
“In the electromagnetic world, this ‘steel giant’s’ radar cross-section is smaller than a human palm.”
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The F-35 has a radar cross-section of around 15cm², about the size of a golf ball, according to the Indian Defence Research Wing military website.
