Engineering Development Analysis of a Segmented Projectile Discarding Sabot: Final Report


  1. Bélanger, É.
  2. Gosselin, P.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Numerica Technologies Inc, Quebec City (QUE)
Developments and studies in hypervelocity conditions near Mach 6.7 show that a segmented projectile is more efficient in terms of penetration than an equivalent monolithic projectile. These projectiles are inserted in a sabot component for the launch. A sabot allows a projectile of a smaller calibre to be fired within a largerbore accelerator. The sabot fills the bore of the gun during the firing stage. Usually, the sabot is a lightweight carrier. This means, the sabot’s effect on the core mass must be minimal during the impact with the target. Even if the mass of the sabot is at a minimum; it represents a parasitic mass for the total launch assembly weight. To remove the sabot quickly during flight, it is possible to cut some petals on the sabot wall and put some angle on the front of the petals to help them rotate away from the projectile. This report will put some attention on the opening of petals for the discarding sabot. The opening of petals will allow reducing the speed of the sabot and permit designing adequately the sabot trap. The opening of the petals will be considered for a few kind of design. This report will also evaluate the discarding sabot resistance and its capability to survive the loading conditions inside the light gas gun caused by the acceleration during the launch. Finally, this report will show the main results of the development for the sabot/projectile assembly in regards of increasing the weight of tungsten projectile. Some analytical calculati
Report Number
DRDC-VALCARTIER-CR-2005-472 — Contractor Report
Date of publication
01 Sep 2005
Number of Pages

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