Extended Application and Experimental Verification of a New Erosive Burning Model Coupled Heat Transfer between Gas and Grain Based on a Star-Grain Solid Rocket Motor

The estimation of erosive burning is great importance for the internal ballistics computation a solid rocket motor (SRM) with large aspect ratio. Because variety parameters affecting burning, most models developed in earlier years usually contain unknown constants that need to be identified by trial-and-error procedure each SRM. Based on an SRM cylindrical grain, new model, which coupled heat transfer between gas and was proven effective previously. To expand scope application this paper, were used transient one-dimensional computation, obtain star-grain A comparison computational experimental results indicated both can good accuracy paper shows no identified, Ma model easy use has potential predict rate before firing test.