The grenade is separated into two parts, the warhead and sustainer motor, and the booster charge. These two parts must be screwed together before the grenade is ready to fire. When the projectile is first launched it is powered by a small strip powder charge to reduce the backblast area from harming the gunner. At approximately 11 meters the sustainer rocket kicks in, ignites, and boosts the rocket to maximum velocity.
The fins open after launch with canted surfaces that spin the rocket and stabilize the rocket in flight. The rocket itself is HEAT rounds are olive drab, and practice rounds are black. They use a point impact fuse with a base detonator. The greatly increased penetration of an explosive into a surface as of metal or concrete that is caused by shaping a conical or hemispherical hollow in the forward end of an explosive cartridge - Merriam-Webster Dictionary.
When the round detonates a small cone of metal forms and burns through the armor. There is no explosion after the core penetrates the armor, it is often the metal continuing out the other side of the target. Since the RPG-7 is a direct fire weapon, it's effectiveness on the battlefield is directly affected by the ability of the gunner.
The weapon's biggest weakness is crosswind when leading a target down range. They must calculate both wind direction and velocity, but even then results may vary. Iron sights are permanently attached and can sight to meters with no wind or lead adjustment. In a conventional force, it is the backup sight system, but since most forces who use this weapon are unconventional, it is usually the primary.
The Soviet tactical doctrine regarding the RPG-7 states that it is most effective at meters or at a point blank target with a height of two or more meters. The reasoning for meters is that it will reduce the target reaction time to take evasive action or to counterattack. The round was designed to penetrate 13 inches of armor but in practice penetrates 11 inches of steel instead. During these tests, the U.
Army also found that exposed tanks not in defilade are twice as vulnerable as one that is. A troop is to react immediately when fired at by an RPG Because a second round is more likely to hit, it is imperative to suppress with machine guns, pop smoke, and move out of the kill zone.
Out of all the Soviet weapons, the deadliest is their propaganda infecting governments around the world. Why getting in trouble early makes you a better leader. The ridiculous anatomy of most Army Reserve drill days.
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Army Sniper Course at Fort There are several types of grenades that can be used in the RPG Some have a point initiating, base-detonating PIBD piezoelectric fuze: meaning that they are impact grenades. And, many others have back-up time delay systems, so that if they have not reached a target in a certain amount of time something like four and a half seconds the grenade will self destruct.
Impact grenades must be unarmed until they are actually fired because any accidental contact might set them off. Since they are usually shot from a launcher, they must have an automatic arming system. In some designs, like the one we describe above, the arming system is triggered by the propellant explosion that drives the grenade out of the launcher. In other designs, the grenade's acceleration or rotation during its flight arms the detonator.
As for the back-up timed delay, the same fuze mechanism that sets off the the rocket would set this off. The spark ignites a slow-burning material in the fuze. In about four seconds, the delay material burns all the way through. The end of the delay element is connected to the detonator.
The burning material at the end of the delay ignites the material in the detonator, thereby exploding the warhead. Certain crystalline materials like quartz, Rochelle salt and some ceramics have piezoelectric behavior. When you apply pressure to them, you get a charge separation within the crystal and a voltage across the crystal that is sometimes extremely high.
It turns out one of your household appliances uses similar technology: In a grill starter, the popping noise you hear is a little spring-loaded hammer hitting a crystal and generating thousands of volts across the faces of the crystal. A voltage this high is identical to the voltage that drives a spark plug in a gasoline engine. The crystal's voltage generates a spark large enough to light the gas in the grill.
This same kind of technology can be used to detonate grenades and warheads. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe.
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