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Jumat, 15 Maret 2013

LCS 5 To Get New Waterjets

 
The Office of Naval Research recently announced that USS Milwaukee (LCS 5) will be equipped with four Rolls-Royce Axial-Flow Waterjet Mk-1 engines, which they claim will both improve performance and reduce required maintenance over the life of the ship.

Navy Orders More Tests for Anti-Ship Missile

The U.S. Navy just ordered $71 million worth of additional testing for the Long Range Anti-Ship Missile program.

DARPA seeks UAV for LCS 2

 
The U.S. military wants to build a medium-sized drone that it can fly off Littoral Combat Ship 2 (LCS2)-class ships.

Natick Touts ‘Ironman’ Milestone

Military​.com just posted an item in the Army news section that highlights the results of Natick’s forward operational assessment of the Large Capacity Ammunition Carriage System, also known as “Ironman.”
The article states that Ironman began during a discussion between members of the 1st Battalion, 133rd Infantry Regiment, 2nd Brigade Combat Team, 34th Infantry Division, about how three-man, crew-served weapons teams struggled to stay together during engagements with the enemy while negotiating difficult terrain. Wouldn’t it be nice, someone said, if they had a one-man weapon system like the one actor Jesse Venture had brandished in the movie “Predator”?

Sequestration will not kill Army’s NIEs

 
Army leaders confirmed Wednesday that the Army’s fourth Network Integration Evaluation will occur this spring even if sequestration hits, like many expect, on Friday.

BAE Tapped to Lead Army Micro-Robotic Effort

 

The Army has awarded BAE Systems a $43 million cooperative agreement extension to lead the Army Research Laboratory’s Micro Autonomous Systems and Technology Collaborative Technology Alliance for another five years.

Report: China developing advanced drone fleet

 
The U.S. may own the skies now when it comes to drones, but China is fast developing strategic and tactical unmanned aerial vehicles capable of supporting ground, sea and air forces, and also subbing for satellite communications in the event they are taken out.

Kendall: F-35 Production Ramp-Up a Tough Call

 

Pentagon procurement chief Frank Kendall says he hopes to ramp up production of the single-engine, stealthy F-35, made by Lockheed Martin, but he will only do so if adequate progress is made in testing on the troubled program.

Navy Wants More GD Super Computers

The U.S. Navy has awarded a $19.3 million contract to General Dynamics Advanced Information Systems to produce Type-3 advanced mission computers for the F/A-18E/F and E/A-18G Super Hornet aircraft.
These special computers act as the nerve center of the Super Hornet, providing situational awareness and combat systems control to the flight crew, GD officials maintain. General Dynamics has delivered F/A-18 advanced mission computers since 2002.

Senin, 18 Februari 2013

How Nuclear Bombs Work

Hiroshima Peace Memorial stands as a visible reminder of the day the Japanese city was bombed on Aug. 6, 1945. After that fateful day, the structure was the only thing still standing in the vicinity of the explosion.
The first nuclear bomb meant to kill humans exploded over Hiroshima, Japan, on Aug. 6, 1945. Three days later, a second bomb detonated over Nagasaki. The death and destruction wrought by these weapons was unprecedented and might have, in another world with another race of beings, ended the nuclear threat right then and there.
But the events in Japan, although they brought a close to World War II, marked the beginning of the Cold War between the United States and the Soviet Union. Between 1945 and the late 1980s, both sides invested huge amounts of money in nuclear weapons and increased their stockpiles significantly, mostly as a means to deter conflict. The threat of catastrophic destruction from The Bomb loomed over everyone and everything.

Kamis, 14 Februari 2013

How Rocket-Propelled Grenades Work




You may have heard the term rocket-propelled grenade, and you've probably seen news images of their use and the destruction they can cause, particularly if you've kept up with current world events in the Middle East. Rocket-propelled grenades are a commonly used explosive projectile weapon, used by many armies across the world. They play a major part in contemporary warfare, and are also highly used among insurgent and terrorist groups.
But why? Why are rocket-propelled grenades (RPGs) so prevalent? Where did they come from and just how do they work? It's obvious they're more than just a normal grenade simply because they're rocket propelled, but just what does that mean? In this article, we'll investigate the origins of rocket-propelled grenades, how they're used and what makes them so common in military conflicts all over the world.

How Rail Guns Work

Gunpowder has long been the propellant of choice to launch a projectile from a weapon. But the fine gray powder does have three major limitations:
  • Gunpowder must be carried with the projectile, making the entire round heavier.
  • Ordnance based on black powder is volatile, and so difficult to handle and transport.
  • The muzzle velocity of projectiles propelled by gunpowder is generally limited to about 4,000 feet (about 1,219 meters) per second.
Is it possible to overcome these challenges? One solution is the electromagnetic rail gun, or rail gun for short. Using a magnetic field powered by electricity, a rail gun can accelerate a projectile up to 52,493 feet (16,000 meters) per second. And while current Navy guns have a maximum range of 12 miles, rail guns can hit a target 250 miles away in six minutes.
In this article, we'll discuss how rail guns work, how they can be used and the limitations of this technology.

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