Dispersion sensitivity analysis & consistency improvement of APFSDS
The purpose of this study is to investigate and quantify some possible sources of dispersion of 120 mm APFSDS tank ammunition both experimentally and numerically. This paper aims to point out the most influential source during In-Bore Balloting Motion phase as well as in External Ballistics phase of...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2017-08-01
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| Series: | Defence Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914717300326 |
| _version_ | 1818871475460898816 |
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| author | Sangeeta Sharma Panda L.K. Gite A. Anandaraj R.S. Deodhar D.K. Joshi K.M. Rajan |
| author_facet | Sangeeta Sharma Panda L.K. Gite A. Anandaraj R.S. Deodhar D.K. Joshi K.M. Rajan |
| author_sort | Sangeeta Sharma Panda |
| collection | DOAJ |
| description | The purpose of this study is to investigate and quantify some possible sources of dispersion of 120 mm APFSDS tank ammunition both experimentally and numerically. This paper aims to point out the most influential source during In-Bore Balloting Motion phase as well as in External Ballistics phase of the ammunition and quantifies its effect on dispersion. Data obtained from flight trials is critically analysed and parameters affecting dispersion such as initial yaw/pitch rates, yaw/pitch dampening, plane start angle, launch spin, clearance, centre of gravity shift, dynamic imbalance angle, cross wind, etc. are observed and, later on, studied in detail by extensive External Ballistics Monte Carlo (EBMC) simulation and Six Degree of Freedom (6-DOF) trajectory analysis.
In Bore Balloting Motion simulation shows that reduction in residual spin by about 5% results in drastic 56% reduction in first maximum yaw. A correlation between first maximum yaw and residual spin is observed. Results of data analysis are used in design modification for existing ammunition. Number of designs are evaluated numerically before freezing five designs for further soundings. These designs are critically assessed in terms of their comparative performance during In-bore travel & external ballistics phase. Results are validated by free flight trials for the finalised design. |
| first_indexed | 2024-12-19T12:23:30Z |
| format | Article |
| id | doaj.art-78c97a74d2e44b7fb820904962b3c6f1 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-12-19T12:23:30Z |
| publishDate | 2017-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-78c97a74d2e44b7fb820904962b3c6f12022-12-21T20:21:38ZengKeAi Communications Co., Ltd.Defence Technology2214-91472017-08-0113431632210.1016/j.dt.2017.05.005Dispersion sensitivity analysis & consistency improvement of APFSDSSangeeta Sharma PandaL.K. GiteA. AnandarajR.S. DeodharD.K. JoshiK.M. RajanThe purpose of this study is to investigate and quantify some possible sources of dispersion of 120 mm APFSDS tank ammunition both experimentally and numerically. This paper aims to point out the most influential source during In-Bore Balloting Motion phase as well as in External Ballistics phase of the ammunition and quantifies its effect on dispersion. Data obtained from flight trials is critically analysed and parameters affecting dispersion such as initial yaw/pitch rates, yaw/pitch dampening, plane start angle, launch spin, clearance, centre of gravity shift, dynamic imbalance angle, cross wind, etc. are observed and, later on, studied in detail by extensive External Ballistics Monte Carlo (EBMC) simulation and Six Degree of Freedom (6-DOF) trajectory analysis. In Bore Balloting Motion simulation shows that reduction in residual spin by about 5% results in drastic 56% reduction in first maximum yaw. A correlation between first maximum yaw and residual spin is observed. Results of data analysis are used in design modification for existing ammunition. Number of designs are evaluated numerically before freezing five designs for further soundings. These designs are critically assessed in terms of their comparative performance during In-bore travel & external ballistics phase. Results are validated by free flight trials for the finalised design.http://www.sciencedirect.com/science/article/pii/S2214914717300326APFSDSDispersionConsistencyAccuracyYaw rateSpinMuzzle jump factorIn-bore dynamicsMonte Carlo simulation |
| spellingShingle | Sangeeta Sharma Panda L.K. Gite A. Anandaraj R.S. Deodhar D.K. Joshi K.M. Rajan Dispersion sensitivity analysis & consistency improvement of APFSDS Defence Technology APFSDS Dispersion Consistency Accuracy Yaw rate Spin Muzzle jump factor In-bore dynamics Monte Carlo simulation |
| title | Dispersion sensitivity analysis & consistency improvement of APFSDS |
| title_full | Dispersion sensitivity analysis & consistency improvement of APFSDS |
| title_fullStr | Dispersion sensitivity analysis & consistency improvement of APFSDS |
| title_full_unstemmed | Dispersion sensitivity analysis & consistency improvement of APFSDS |
| title_short | Dispersion sensitivity analysis & consistency improvement of APFSDS |
| title_sort | dispersion sensitivity analysis consistency improvement of apfsds |
| topic | APFSDS Dispersion Consistency Accuracy Yaw rate Spin Muzzle jump factor In-bore dynamics Monte Carlo simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214914717300326 |
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