#REDDIT THE GREAT WAR HOW TO#
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(Radial pressure expands the barrel, thus the barrel must allow for walls to stretch around the circumference) Hoop tension stress - also known as circumferential stress. The barrel design allows for this to be absorbed so the the external pressure is near zero) The stress on the inner surface is almost equal to the applied pressure. (Gas pressure produces a radial stress acting outwards. Radial stress - stress applied perpendicular to the symmetrical axis. Now in regards to why a grenade would render it unusable is about dispersion of stresses on the barrel.ДЎ. The projectile then leaves the barrel and the Big Bang you hear is the gases escaping and if you see a muzzle flash itвЂ™s either the gas igniting the air or left over semi burnt propellant briefly reigniting.not an explosion. At about 85/90cm down the barrel ALL the propellant is burnt (called the вЂњall burntвЂќ) and pressure is decreasing behind the round as itвЂ™s moving up to exit the barrel. The round is travelling at 600m/s at this point. Enough pressure then builds up that вЂњshot startвЂќ pressure is achieved and the driving band around the projectile is pushed into the rifling of the barrel and the round starts to rotate as maximum pressure is achieved (around 3.1 pressure tonnes/cm2). When fired, the primer lights the propellant (propellant amount can vary due to the type of projectile or how far you want to shoot the round) and it starts to burn. ThatвЂ™s why the ramming of the round is very important because if you have a bad ram the projectile isnвЂ™t seated properly and the gases will escape forward of the round thus preventing maximum velocity to be achieved. It is different for other equipment.ДЄ projectile is moved through the barrel by the pressure attained through burning of propellant, not an explosion of the projectile. If you don't know, you can't do shit on autopilot when you're in the black. Seconds cost minutes which cost hours which can easily cost a lifetime. Who has the neck brace? Who has the stretcher? Who has the first aid kit? Does the ambulance know where you are? How do they know unless you tell them? Do you know where you fricking are? Can you send someone to the road to direct them when they get here? Better yet, do you have your own ambulance? If it's 30 minutes to where you are, it's one hour before they get expert medical attention. Knowing who is carrying what saves seconds, which ends up saving minutes, which saves hours, which saves lives. Shit, I've seen shit go south and I've seen how confusion gets people killed. I always found it funny that non-comm's didn't want to or hated clarifying details. Always communicate intent, if it's unclear, ask. This is why it's critical that officers receive training to communicate.

#REDDIT THE GREAT WAR HOW TO#

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