TRAJECTORY SIMULATION OF OGIVAL-BOAT-TAILED PROJECTILES
Zaki, A., Abdel-Kader, M., Yakout, H. (1999). TRAJECTORY SIMULATION OF OGIVAL-BOAT-TAILED PROJECTILES. EKB Journal Management System, 8(ASAT Conference, 4-6 May 1999), 1-9. doi: 10.21608/asat.1999.24876
A. Zaki; M. S. Abdel-Kader; H. Yakout. "TRAJECTORY SIMULATION OF OGIVAL-BOAT-TAILED PROJECTILES". EKB Journal Management System, 8, ASAT Conference, 4-6 May 1999, 1999, 1-9. doi: 10.21608/asat.1999.24876
Zaki, A., Abdel-Kader, M., Yakout, H. (1999). 'TRAJECTORY SIMULATION OF OGIVAL-BOAT-TAILED PROJECTILES', EKB Journal Management System, 8(ASAT Conference, 4-6 May 1999), pp. 1-9. doi: 10.21608/asat.1999.24876
Zaki, A., Abdel-Kader, M., Yakout, H. TRAJECTORY SIMULATION OF OGIVAL-BOAT-TAILED PROJECTILES. EKB Journal Management System, 1999; 8(ASAT Conference, 4-6 May 1999): 1-9. doi: 10.21608/asat.1999.24876

TRAJECTORY SIMULATION OF OGIVAL-BOAT-TAILED PROJECTILES

International Conference on Aerospace Sciences and Aviation Technology
Article 9, Volume 8, ASAT Conference, 4-6 May 1999, May 1999, Page 1-9  XML PDF (1.52 MB)
Document Type: Original Article
DOI: 10.21608/asat.1999.24876
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Authors
A. Zaki1; M. S. Abdel-Kader2; H. Yakout3
1Assistant Lecturer, Department of Aerospace Engineering, M.T.C., Cairo, Egypt.
2Associate Prof., Department of Aerospace Engineering, M.T.C., Cairo, Egypt.
3Lecturer, Department of Aerospace Engineering, M.T.C., Cairo, Egypt.
Abstract
ABSTRACT
Resistance to projectile flight in air decomposes into three main components. The first component is the nose drag due to the air pressure ahead of the body. The second is the skin friction drag component due to shear forces between the air layers. The third is the total base drag component due to disability of air stream lines to follow up the body shape specially at supersonic speeds. Herein, it is shown how different drag coefficients, and consequently total drag coefficient, can be predicted.
Drag models can be empirical or semi-empirical. A combination of two drag models will be used herein in order to predict drag coefficients at Mach numbers ranging from 0 to 3.5 for different projectile shapes. These models are the semi-, empirical model introduced by Lebeqev and Chernobrovsky and the experimental.. data illustrated graphically by ESDU.
Drag prediction of classical and modern projectile shapes with boat-tails is conducted for different initial firing conditions. Effect of changing projectile shape on range is discussed. It is concluded that the range is increased in case of projectiles having longer ogive and boat-tail, and boat-tail angle ranging from 3 to 5 degrees.
Keywords
Trajectory Simulation; Drag Modeling; Ogival Boat-Tailed Projectiles
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