Design of a Reduced Lethality Artillery Round (REDLAR)

15-3-3.jpg
15-3-3.jpg

Design of a Reduced Lethality Artillery Round (REDLAR)

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Author(s): Alexander J. Braden; Kevin M. Jaansalu
No pages: 8
Year: 2012
Article ID: 15-3-3
Keywords: firepower and protection, REDLAR, reduced lethality artillery round
Format: Electronic (PDF)

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Abstract: A design specification was written for a “non-lethal” artillery round, with the aim of mimicking the explosion characteristics of the M107 high-explosive round, while minimizing the lethal radius. An M107 round contains 6.95 kg of Composition B, with a 100% kill radius of roughly 20–30 m. The required explosive mass was reduced to 3.00 kg, to account for the fact that no explosive energy would be required to expand a steel shell and propel the resulting fragments. Since a lethal radius of 1–2 m exists due to blast overpressure, the round is referred to as a “reduced lethality artillery round” (REDLAR). Eight concepts for a REDLAR were developed, then screened and ranked on the basis of the design specification. Two concepts were selected and refined into detailed computer models: a base-ejecting charge round (BEC), and a 155 mm sabot round. Using the PRODAS© software package, simulations of the interior and exterior ballistic performance of each round were conducted. Results showed that the BEC was a close ballistic match to the M107, while the Sabot Round was gyroscopically unstable. The BEC round was also calculated to have a 50% probability of a lethality radius of 1 m or less.