Rail Gun Delivered to US Navy

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Jahee

Platinum Member
Sep 21, 2006
2,072
0
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Originally posted by: Indolent
Originally posted by: Jahee
"For every action, there is an equal and opposite reaction".

What do you think will happen when you accelerate a projectile to Mach 7 in the length of the barrel..?

Well, if you know the mass of the projectile, you would be able to calculate the reaction forces and design the gun and it's supports to withstand these forces.

Is there something else you're trying to point out with your comment?

My point is, at the moment i don't think there are any materials that can withstand the forces involved, repeatedly.

"Accelerating a 1 gram projectile up to a mere 1% of light speed would produce enough force to send 100kg in the opposite direction at 3000 meters per second (9800 feet per second or 6000 miles per hour)."

Granted we're talking around 0.01%? The speed of light but the projectiles we're talking about here are likely to weigh significantly more than 1 gram.
 

destrekor

Lifer
Nov 18, 2005
28,799
359
126
Originally posted by: BlinderBomber
Originally posted by: Fenixgoon
i'd like to know whether the rail slugs contain any explosive charges or not. sure nailing a tank with a giant block of metal works well, but how well does it work for anti infantry fire support and area of effect?

I'm pretty sure that to hit soft targets, the round will have a small explosive charge in it, which will cause the round to explode into thousands of pieces before impact... think birdshot in a shotgun.

All that flame and smoke from the demonstration video, is merely the ignition - from the energy released - of particles that fragmented off the main projectile. Seeing as that's the case, I wouldn't find it advisable to place explosive material in the projectile. A little risky, no?

I still wanna see a demonstration of this on potential targets (of the kind that it is designed for).
 

FeuerFrei

Diamond Member
Mar 30, 2005
9,144
929
126
Originally posted by: Indolent
Originally posted by: Jahee
"For every action, there is an equal and opposite reaction".

What do you think will happen when you accelerate a projectile to Mach 7 in the length of the barrel..?

Well, if you know the mass of the projectile, you would be able to calculate the reaction forces and design the gun and it's supports to withstand these forces.

Is there something else you're trying to point out with your comment?

He's trying to point out we need longer ships.
 
Oct 25, 2006
11,036
11
91
Originally posted by: Jahee
Originally posted by: Indolent
Originally posted by: Jahee
"For every action, there is an equal and opposite reaction".

What do you think will happen when you accelerate a projectile to Mach 7 in the length of the barrel..?

Well, if you know the mass of the projectile, you would be able to calculate the reaction forces and design the gun and it's supports to withstand these forces.

Is there something else you're trying to point out with your comment?

At the moment, i don't think there are many materials that can withstand the forces involved, repeatedly.

Thats the point. The Military is having problems developing a barrel that won't rip itself apart after 1 shot.
 

destrekor

Lifer
Nov 18, 2005
28,799
359
126
Originally posted by: FeuerFrei
Originally posted by: Indolent
Originally posted by: Jahee
"For every action, there is an equal and opposite reaction".

What do you think will happen when you accelerate a projectile to Mach 7 in the length of the barrel..?

Well, if you know the mass of the projectile, you would be able to calculate the reaction forces and design the gun and it's supports to withstand these forces.

Is there something else you're trying to point out with your comment?

He's trying to point out we need longer ships.

longer ships? why is that a requirement for one of these guns? Obviously this thing is being developed for the DDX class of Destroyers, which are not lengthy ships by any means.