A ballistic missile, said to be solid-fuel and hypersonic, launching during a test at an unspecified location in North Korea, on Jan 14.on April 2, in what South Korean officials said could be related to its development of a new solid-fuel hypersonic weapon.
In January, North Korea test-fired an IRBM that it said was equipped with a hypersonic manoeuvrable controlled warhead. State media did not immediately disclose details of April 2’s launch. “These capabilities are much more responsive in a time of crisis,” said Mr Ankit Panda, a senior fellow at the US-based Carnegie Endowment for International Peace.Solid propellants are a mixture of fuel and oxidiser. Metallic powders such as aluminium often serve as the fuel, and ammonium perchlorate, which is the salt of perchloric acid and ammonia, is the most common oxidiser.
The Soviet Union fielded its first solid-fuel ICBM, the RT-2, in the early 1970s, followed by France’s development of its S3, also known as SSBS, a medium-range ballistic missile.South Korea has also said it has secured “efficient and advanced” solid-propellant ballistic missile technology, though in much smaller rockets so far.Liquid propellants provide greater propulsive thrust and power, but require more complex technology and extra weight.
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