According to the licensing notice of the State Intellectual Property Office, Xiaomi Auto Technology Co., Ltd. was granted the “Underwater Propulsion and Vehicle” utility model patent. The authorization notice number is CN 224477061 U. According to the patent description, the underwater propeller uses an annular flow channel design with an outer cover and a built-in diversion part, which gradually shrinks from the water inlet to the outlet through the outer wall of the diversion part, with a “smaller inlet area and larger outlet area” flow channel layout to gently guide the water flow through the channel to prevent the water flow from forming a local low pressure zone due to rapid contraction and expansion. Reducing from the source will cause noise and the bubble effect that erodes the blades. Furthermore, according to this patent, it has been learned that Xiaomi may be exploring amphibious travel scenarios.

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