By C. B. Colby
In short discusses guns utilized in the U.S. from the innovative warfare to the current.
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Figure 7: 4 Aerodynamic forces exerted on sabot structure. Summary An insight into the transient sabots separation processes was provided in this paper via a detailed finite element model, representing the sabot and penetrator, subjected to a free stream flow field. The model was prepared using exact geometric part features, which include the buttress groove details on both the sabot and penetrator. It was written in the FSI numerical package of MSC - DYTRAN and utilizes an Euler Lagrange coupling to correlate the unsteady aerodynamic forces and the sabots’ rigid body motions.
Numerical Simulation of Sabot Discard Aerodynamics, Army Research Laboratory ARL-TR-204 September 1993. com, ISSN 1743-355X (on-line) This page intentionally left blank Computational Ballistics III 21 Fast calculation of direct fire trajectories taking the earth’s rotation into account W. Roetzel1, W. Czarnetzki2 & T. Maier2 1 Helmut-Schmidt-Universität / Universität der Bundeswehr Hamburg, Germany 2 Hochschule Esslingen, Germany Abstract An analytical approach is developed for the subsequent consideration of the Coriolis effect.
2 and 4]. The programme is constructed in such a way that for a given target (x1, y1) or (L1, β) and wind velocity (wx, wy, wz) the angle of lead and the gun elevation angle above line of sight is calculated iteratively. The extended programme has been tested against numerical calculations described in chapter 2 of this paper. Four typical examples are presented in the following. 4286 (eq. (1)). 25 mbar and t0 = 15° C. 292 . 10-5 rad/s [1]. 73. 6 s. Table 1 shows calculated Coriolis deflections for flat fire from the north pole and the equator.
