Powder spraying mechanism and rotary detonation engine

The embodiment of the invention discloses a powder spraying mechanism and a rotary detonation engine, and relates to but is not limited to the rotary detonation engine technology. The powder spraying mechanism comprises a body provided with a first nozzle, a second nozzle and a mixing runner. The injection direction of the first nozzle and the injection direction of the second nozzle can intersect in the mixing flow channel, so that solid powder fuel injected into the mixing flow channel through the first nozzle and a solid powder oxidizing agent injected into the mixing flow channel through the second nozzle can directly collide in the mixing flow channel to be premixed. The solid powder fuel and the solid powder oxidizing agent entering the annular combustion cavity are mixed more evenly, the mixing proportion can reach a preset value, and therefore the performance of the rotary detonation engine is improved. 本文实施例公开一种喷粉机构及旋转爆震发动机，涉及但不限于旋转爆震发动机技术。该喷粉机构包括设置有第一喷口、第二喷口和混合流道的本体。其中，第一喷口的喷注方向和第二喷口的喷注方向能够在混合流道内相交，