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Sea Dart had an 11 Kg warhead that was located aft of the conical aerospike inside the component known as the forebody. While the forebody was approx 10 inch diameter this included a layer of insulation, required due to kinetic heating, so the useful diameter was maybe 8-9 inches. The W45 is reported to weigh 68kg which would made a real mess of the missiles weight and balance. As said before such a warhead would need to be located somewhere else on the airframe…. Which is difficult considering everything aft of the forebody was an annular section;- the air for the ramjet flows through a central tube approx 8 inches diameter.

[QUOTE="Zoo Tycoon, post: 695714, member: 1642"] Sea Dart had an 11 Kg warhead that was located aft of the conical aerospike inside the component known as the forebody. While the forebody was approx 10 inch diameter this included a layer of insulation, required due to kinetic heating, so the useful diameter was maybe 8-9 inches. The W45 is reported to weigh 68kg which would made a real mess of the missiles weight and balance. As said before such a warhead would need to be located somewhere else on the airframe…. Which is difficult considering everything aft of the forebody was an annular section;- the air for the ramjet flows through a central tube approx 8 inches diameter. [/QUOTE]

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