According to the Korean Central News Agency, an important research institute of the Korean Academy of Defense Sciences successfully conducted the ground ignition test of North Korea's first high-power solid fuel engine with a thrust of 140tf at the West Sea Satellite Launch Site on the morning of the 15th. North Korea's top leader, Kim Jong Un, gave guidance on the spot. It is reported that the purpose of this test is to confirm all the technical characteristics of high-power solid fuel engine using thrust vector control technology. The test results show that the thrust, specific impulse, combustion characteristics, operation time, thrust vector control characteristics and other technical indicators of the engine are completely consistent with the design values, and its reliability and safety are scientifically verified. The report said that this major test provided a firm scientific and technological guarantee for the development of another new strategic weapon system. Kim Jong un spoke highly of this. (Liu Xinshe)