Backblast area
The backblast area is a cone-shaped area behind a rocket launcher, rocket-assisted takeoff unit or recoilless rifle, where hot gases are expelled when the rocket or rifle is discharged.[1] The backblast area is dangerous to ground personnel,[2] who may be burned by the gases or exposed to overpressure caused by the explosion.[3] In confined spaces, common in urban warfare, even the operators themselves may be at risk due to deflection of backblast by walls or sturdier civilian vehicles behind them.
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Soft launch methods diminish backblast by ejecting the projectile some distance before its main rocket motor ignites. Backblast can also be reduced by adding a countermass that is expelled out the rear of the weapon. For example, the AT4-CS (confined space variant) uses saltwater, along with a lower-velocity projectile.
References
- Morris, Christopher G. (1992). Academic Press dictionary of science and technology. Gulf Professional Publishing. p. 202.
- Louison, Cole G. (2009). U.S. Army Zombie Combat Skills. Globe Pequot. p. 112.
- "Javelin—Close Combat Missile System, Medium, Field manual". Department of the Army. 20 March 2008. Archived from the original on 2011-07-20. Retrieved Sep 3, 2010.