Battleground Lebanon (Firepower Pictorials) by Samuel Katz

By Samuel Katz

Images and drawings of the clash in Lebanon because the 1980's with weaponry and infantrymen.

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Battleground Lebanon (Firepower Pictorials)

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For the coupled solution, the mesh is translated back to the desired initial position ( x0 , y0 , z0 ) and the remaining angular velocity initial conditions ( q0 , r0 ) are then added. In the coupled mode, the aerodynamic forces and moments are passed to the RBD simulation which propagates the rigid state of the projectile forward in time. com, ISSN 1743-355X (on-line) Computational Ballistics III Figure 2: 3 37 Projectile orientation definitions. Flight dynamics projectile aerodynamic model The applied loads in Equations 3 and 4 are expressed in the body reference frame and split into contributions due to weight and body aerodynamic force as shown below.

U , v, w : Components of velocity vector of mass center in body reference frame. p, q, r : Components of angular velocity vector in body reference frame. Fx , Fy , Fz : Total applied force components in body reference frame. M x , M y , M z : Total applied moment components about mass center in body reference frame. V : Magnitude of relative aerodynamic velocity vector of mass center. ρ : Air density. D : Projectile diameter. α : Aerodynamic angle of attack. Cx0: Zero yaw drag aerodynamic coefficient.

Dmag: Distance from the mass center to the center of Magnus. CFD: Computational Fluid Dynamics. References [1] [2] [3] [4] [5] J. Sun, R. Cummings, “Evaluation of Missile Aerodynamic Characteristics Using Rapid Prediction Techniques,” Journal of Spacecraft and Rockets, Vol 21, No 6, pp 513-520, 1984. F. Moore, “The 2005 Version of the Aeroprediction Code (AP05),” AIAA 2004-4715, AIAA Atmospheric Flight Mechanics Conference, Providence, Rhode Island, 2004. T. Sooy, R. Schmidt, “Aerodynamic Predictions, Comparisons, and Validations Using Missile DATCOM and Aeroprediction 98,” AIAA2004-1246, AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, 2004.

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