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The calculation model of water resistance is derived by using fluid resistance theory. Using the water resistance calculation model, the braking distance calculation model is derived, and the braking distance of the two two-track sled vehicles is estimated. The pre-estimated water resistance, speed, and braking distance of the sled vehicle are in accordance with the actual external measurement results. The correctness of the water resistance calculation model is verified.

Derivation of drag calculation model of rocket sled water brake