Focusing on the aerodynamic characteristics of the blended wing body (BWB) aircraft with boundary layer ingestion(BLI) distributed propulsion system; the influences of propulsion system parameters under the condition of cruise and takeoff are studied. Firstly. based on the momentum source method (MSM). the NASA ducted propeller model is simulated. https://www.spidertattooz.com/The-GelBottle-Inc-Gel-Polish-Cashmere-67oz-p20053/