Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Study on the influence of muzzle brake on cannonball empennage stabilizing device
| DOI: | 10.11809/bqzbgcxb2025.03.010 |
| Keywords: | muzzle brake; muzzleflow field; tail fin; dynamic grid; roll angle; pressure distribution |
| Abstract: | In order to investigate the motion of projectile in the muzzle brake and the influence of the tail on the complex air flow during the launching process.A three dimensional numerical model of muzzle flow field with brake was established in Fluent software using dynamic grid technology. The complex flow field formed by the exit muzzle of the fin stabilized projectile was numerically simulated by this model. The pressure distribution of tail fins in the brake under different roll angles was analyzed. The results show that the surface pressure distribution of the tail fins is uneven and the average pressure difference between the two sides of the fin is reduced after the increase with time due to the complicated airflow in the muzzle brake. Under the roll angle of 0 to 45 degrees, the maximum average pressure difference decreases with the increase of the roll angle of projectile. When the roll angle is 0 degrees, the influence of the air flow the muzzle brake is the greatest.The calculation results have a certain guiding significance for the structural design of the projectile tail stabilizer. |
| Issue: | Vol. 46 No. 3 (2025) |
| Published: | 2025-03-31 |