Hiển thị các bài đăng có nhãn generation. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn generation. Hiển thị tất cả bài đăng

Thứ Năm, 2 tháng 5, 2013

5th generation F-35 stealth fighter makes headway

  • F-35 Lightning II 3.jpg

    April 24, 2013: U.S. Marine Corps Lt. Col. Rodger Hardy delivers the fourth F-35A Lightning II to the 422nd Test and Evaluation Squadron at Nellis Air Force Base, Nev. The aircrafts modern engine delivers more than 60 percent more thrust than any other aircraft of the same weight.U.S. Air Force / Senior Airman Daniel Hughes

  • F-35 Lightning II 1.jpg

    April 24, 2013: A U.S. Air Force F-35A Lightning II, flown by U.S. Marine Lt. Col. Rodger Hardy at Nellis Air Force Base, Nev. The F-35A Lightning II is a single-seat, single engine, fifth generation, multirole fighter thats able to perform ground attack, reconnaissance, and air defense missions with stealth capability.U.S. Air Force / Senior Airman Daniel Hughes

  • F-35 Lightning II 2.jpg

    April 24, 2013:An F-35A Lightning II arrives at Nellis Air Force Base, Nev. The 422nd Test and Evaluation Squadron will design the tactics for the F-35A through rigorous test flights over the Nevada Test and Training Range.U.S. Air Force / Senior Airman Daniel Hughes

  • F-35 Lightning II.jpg

    April 24, 2013: A Lockheed Martin F-35A Lightning II, followed by a Lockheed Martin F-16 Fighting Falcon, flies over Nellis Air Force Base, Nev, prior to landing. The F-35 Lightning II is the fourth of four F-35s to arrive here.U.S. Air Force / Senior Airman Daniel Hughes

F-35 Lighting II, the future jet, will give the U.S. the capability to fly into enemy space first and attack a target with precision weapons at long ranges to clear the way for further forces -- without ever being detected.

Lockheed Martin’s F-35 Lightning II is a 5th-generation stealth fighter developed to safely penetrate areas without enemy radar seeing them -- an enhanced degree of “invisibility” that the 4th generation cannot achieve. Last Friday, the U.S. Marine Corps' VMFAT-501 training squadron in Florida’s Eglin AFB launched its first F-35B eight-ship, flew a mission, hot-pit refueled and went back up again.

This mission is the latest in a series of promising steps forward for the F-35.

Last month, the stealth fighter also had its landmark first short takeoff and vertical landing during a night mission. The test provided further data on the fighter’s special helmet and lighting in operations at night.

Since the program kicked off in the early 1990s, the F-35 development has been bombarded with criticism varying from targeting as the Pentagon’s most expensive equipment through to concerns voiced in a Pentagon Operational Test and Evaluation Office that the fighter could not fly near thunderstorms or risk the jet’s fuel tank exploding.

What is 5th-generation stealth?
The F-35's highly advanced stealth, called “Very Low Observable” or VLO stealth, is achieved through many advances that combine to dramatically reduce detection by enemy aircraft and defense systems.

  • The 5th-generation has what is called a “lower radar cross-section.” Essentially, it means an F-35 pilot can be virtually invisible to enemy aircraft and gives the pilot the advantage of “seeing” the other aircraft first and taking action.
  • The aircraft is fabricated from very advanced materials with a special coating to assist fighter that can move through enemy space essentially invisible to radar.
  • The shape is designed without specific angles, for example, to reduce radar wave reflection. Innovations like reduced heat emissions and embedded antennas further enhance its stealth.

Typical weapons are mounted externally, on wings for example, but the Lightning II can carry a wide weapon array including satellite-guided bombs internally.

In addition to stealth and radar transparency, the F-35 is expected to be faster with a far greater range than previous aircraft with max mach at about 1.6. It has a top speed of 1,300 mph and a range of 1,450 miles.

Its advanced electronic warfare capabilities mean it can locate and track enemy forces, jam radio frequencies and disrupt attacks – key because it means an F-35 can reach highly defended targets while suppressing enemy radar detection.

In addition to electronic warfare and air to air or to ground attack, the F-35 could be used for invisible surveillance and reconnaissance and share the information with forces at sea and on the ground.

The pilots’ helmets are also designed to be state of the art giving the pilots an almost virtual reality. They are laser-scanned to fit precisely to each pilot’s head and while it displays all the data inside the visor that the pilot needs, it also allows them to see 360 degrees.

Inside the cockpit, there are other advanced capabilities like speech recognition – so that a pilot can talk to an F-35 and it talks back.  It also has a glass screen digital instrument panel that the pilot can touch to pull up data – sort of like operating a smart phone.

Three types of Lightning II Force
The Department of Defense's Joint Strike Fighter Program funded the F-35 program with the intention of creating an affordable next generation strike aircraft weapon systems for the Navy, Air Force and Marines. It is hoped the 5th generation stealth fighter will replace several frontline aircraft.

Currently, there are three variations of the stealthy agile F-35 that could be used to defend the homeland and dominate enemy skies.

All three are supersonic, use Very Low Observable stealth and cover the spectrum of take-off needs including challenging take-off scenarios like short paved runways and aircraft carriers through to remote rudimentary roads and forward operating bases.

The F-35A Conventional Takeoff and Landing (CTOL) version carries an internal cannon and is meant for conventional runways.

The F-35B variant, designed for use by the U.S. Marine Corps, as well as the United Kingdom and Italy, has short takeoff/vertical landing (SVTOL).

A very important capability, SVTOL allows it to undertake missions from small ships, ski-jump aircraft carriers or very rudimentary expeditionary airfields near front-line combat zones.

Very cool, the F-35B can land all by itself and hover at the touch of a button.

The third version, the larger winged F-35C carrier, is designed for ultra precise handling for final ship approach. For managing the stress of catapult launches and arrested recoveries, it has a more robust structure.

Northrop Grumman, BAE Systems and Pratt & Whitney also work with Lockheed Martin on the project.

Truly a national undertaking, forty-six states and Puerto Rico involved in the F-35 program with Texas, Georgia, California, Arizona and Florida in particular supporting essential testing.

Ballet dancer turned defense specialist Allison Barrie has traveled around the world covering the military, terrorism, weapons advancements and life on the front line. You can reach her at wargames@foxnews.com or follow her on Twitter @Allison_Barrie.


View the original article here

Thứ Tư, 3 tháng 4, 2013

Bye bye, TNT: New generation of explosives for the Army

  • M795_projectiles.jpg

    M795 projectiles like the ones pictured here will soon become equipped with IMX-101, making them far less likely to explode if dropped, shot at or hit by a roadside bomb during transport.U.S. Marine Corps / Sgt. Christopher R. Rye

  • new explosives.jpg

    BAE's Holsten munitions plant, where IMX-101 is manufactured.BAE Systems

Seven Marines were killed in Nevada last week and more injured during a live-fire training exercise with mortar rounds -- a reminder of just how important it is to make advances in less dangerous explosives.

A far stabler new explosive called IMX-101 will soon make soldiers safer on and off the battlefield -- and the U.S. Army on Friday ordered as much as $780 million worth of it.

Hoping to reduce the risk of Nevada-type incidents in the future, the Army will use this new explosive as a replacement for TNT in artillery rounds. Within 10 years, it could completely replace TNT in all large caliber munitions.

TNT vs IMX-101
The new explosives are part of a class called Insensitive Munitions eXplosives or IMX. IMX-101 packs the same punch as TNT, but is a less dangerous explosive for those handling it.

BAE Systems developed IMX-101 and fielded it in partnership with the Army at a plant in Holston, Tenn.

“The work we do at Holston is critical to the defense of our nation and to the safety of our men and women in uniform,” said Erin Moseley, president of BAE Systems’ Support Solutions sector. “IMX-101 is … revolutionizing military ordnance.”

An alternative to TNT or Trinitrotoluene, IMX-101 is instead made with a combination of insensitive “energetic” ingredients like 2,4-Dinitroanisole and Nitrotriazalone. It’s designed to remain chemically stable when subjected to a range of shocks like those created by explosions, gunfire, shrapnel impact and fire.

Traditional TNT can be temperamental and vulnerable to shocks causing it to detonate. Take a vehicle transporting munitions with TNT for example: The impact of a bullet, rocket-propelled grenade or improvised explosive alone could cause detonation, making the cargo as deadly as the attack.

Old rounds with TNT will likely stay stored where they are pending eventual safe disposal.

The Quest for Less Dangerous Explosives
The U.S. Army Common Low-cost Insensitive Munitions Explosive program was designed to identify less dangerous yet equally effective alternatives to TNT.;

As one of the candidates in this program, IMX-101 was loaded into an 155mm M795 artillery projectile and subjected to a battery of tests. It was evaluated against small arms and fragmented munitions attack as well as the impact from a shaped charged weapon.

It was also tested against slow heating from a fire -- say, in an adjacent vehicle -- as well as fast heating that could result from a vehicle fuel fire.

There has been some early speculation that the cause of the Nevada tragedy was an event called “sympathetic reaction,” something that occurs from the same munitions in a magazine, store, aircraft or vehicle. IMX-101 was also tested against this sort of risk.

Testing showed the new explosive had far greater safety features like improved thermal and shock sensitivity. It passed all of the U.S. Army’s tests.

Over the next five years, BAE Systems will produce the explosives at the Holston Army Ammunition Plant in Tennessee – a plant capable of producing millions of pounds of IMX-101 on an annual basis.

Ballet dancer turned defense specialist Allison Barrie has traveled around the world covering the military, terrorism, weapons advancements and life on the front line. You can reach her at wargames@foxnews.com or follow her on Twitter @Allison_Barrie.


View the original article here

Thứ Ba, 2 tháng 4, 2013

Bye bye, TNT: New generation of explosives for the Army

  • M795_projectiles.jpg

    M795 projectiles like the ones pictured here will soon become equipped with IMX-101, making them far less likely to explode if dropped, shot at or hit by a roadside bomb during transport.U.S. Marine Corps / Sgt. Christopher R. Rye

  • new explosives.jpg

    BAE's Holsten munitions plant, where IMX-101 is manufactured.BAE Systems

Seven Marines were killed in Nevada last week and more injured during a live-fire training exercise with mortar rounds -- a reminder of just how important it is to make advances in less dangerous explosives.

A far stabler new explosive called IMX-101 will soon make soldiers safer on and off the battlefield -- and the U.S. Army on Friday ordered as much as $780 million worth of it.

Hoping to reduce the risk of Nevada-type incidents in the future, the Army will use this new explosive as a replacement for TNT in artillery rounds. Within 10 years, it could completely replace TNT in all large caliber munitions.

TNT vs IMX-101
The new explosives are part of a class called Insensitive Munitions eXplosives or IMX. IMX-101 packs the same punch as TNT, but is a less dangerous explosive for those handling it.

BAE Systems developed IMX-101 and fielded it in partnership with the Army at a plant in Holston, Tenn.

“The work we do at Holston is critical to the defense of our nation and to the safety of our men and women in uniform,” said Erin Moseley, president of BAE Systems’ Support Solutions sector. “IMX-101 is … revolutionizing military ordnance.”

An alternative to TNT or Trinitrotoluene, IMX-101 is instead made with a combination of insensitive “energetic” ingredients like 2,4-Dinitroanisole and Nitrotriazalone. It’s designed to remain chemically stable when subjected to a range of shocks like those created by explosions, gunfire, shrapnel impact and fire.

Traditional TNT can be temperamental and vulnerable to shocks causing it to detonate. Take a vehicle transporting munitions with TNT for example: The impact of a bullet, rocket-propelled grenade or improvised explosive alone could cause detonation, making the cargo as deadly as the attack.

Old rounds with TNT will likely stay stored where they are pending eventual safe disposal.

The Quest for Less Dangerous Explosives
The U.S. Army Common Low-cost Insensitive Munitions Explosive program was designed to identify less dangerous yet equally effective alternatives to TNT.;

As one of the candidates in this program, IMX-101 was loaded into an 155mm M795 artillery projectile and subjected to a battery of tests. It was evaluated against small arms and fragmented munitions attack as well as the impact from a shaped charged weapon.

It was also tested against slow heating from a fire -- say, in an adjacent vehicle -- as well as fast heating that could result from a vehicle fuel fire.

There has been some early speculation that the cause of the Nevada tragedy was an event called “sympathetic reaction,” something that occurs from the same munitions in a magazine, store, aircraft or vehicle. IMX-101 was also tested against this sort of risk.

Testing showed the new explosive had far greater safety features like improved thermal and shock sensitivity. It passed all of the U.S. Army’s tests.

Over the next five years, BAE Systems will produce the explosives at the Holston Army Ammunition Plant in Tennessee – a plant capable of producing millions of pounds of IMX-101 on an annual basis.

Ballet dancer turned defense specialist Allison Barrie has traveled around the world covering the military, terrorism, weapons advancements and life on the front line. You can reach her at wargames@foxnews.com or follow her on Twitter @Allison_Barrie.


View the original article here

Thứ Năm, 28 tháng 3, 2013

Bye bye, TNT: New generation of explosives for the Army

  • M795_projectiles.jpg

    M795 projectiles like the ones pictured here will soon become equipped with IMX-101, making them far less likely to explode if dropped, shot at or hit by a roadside bomb during transport.U.S. Marine Corps / Sgt. Christopher R. Rye

  • new explosives.jpg

    BAE's Holsten munitions plant, where IMX-101 is manufactured.BAE Systems

Seven Marines were killed in Nevada last week and more injured during a live-fire training exercise with mortar rounds -- a reminder of just how important it is to make advances in less dangerous explosives.

A far stabler new explosive called IMX-101 will soon make soldiers safer on and off the battlefield -- and the U.S. Army on Friday ordered as much as $780 million worth of it.

Hoping to reduce the risk of Nevada-type incidents in the future, the Army will use this new explosive as a replacement for TNT in artillery rounds. Within 10 years, it could completely replace TNT in all large caliber munitions.

TNT vs IMX-101
The new explosives are part of a class called Insensitive Munitions eXplosives or IMX. IMX-101 packs the same punch as TNT, but is a less dangerous explosive for those handling it.

BAE Systems developed IMX-101 and fielded it in partnership with the Army at a plant in Holston, Tenn.

“The work we do at Holston is critical to the defense of our nation and to the safety of our men and women in uniform,” said Erin Moseley, president of BAE Systems’ Support Solutions sector. “IMX-101 is … revolutionizing military ordnance.”

An alternative to TNT or Trinitrotoluene, IMX-101 is instead made with a combination of insensitive “energetic” ingredients like 2,4-Dinitroanisole and Nitrotriazalone. It’s designed to remain chemically stable when subjected to a range of shocks like those created by explosions, gunfire, shrapnel impact and fire.

Traditional TNT can be temperamental and vulnerable to shocks causing it to detonate. Take a vehicle transporting munitions with TNT for example: The impact of a bullet, rocket-propelled grenade or improvised explosive alone could cause detonation, making the cargo as deadly as the attack.

Old rounds with TNT will likely stay stored where they are pending eventual safe disposal.

The Quest for Less Dangerous Explosives
The U.S. Army Common Low-cost Insensitive Munitions Explosive program was designed to identify less dangerous yet equally effective alternatives to TNT.;

As one of the candidates in this program, IMX-101 was loaded into an 155mm M795 artillery projectile and subjected to a battery of tests. It was evaluated against small arms and fragmented munitions attack as well as the impact from a shaped charged weapon.

It was also tested against slow heating from a fire -- say, in an adjacent vehicle -- as well as fast heating that could result from a vehicle fuel fire.

There has been some early speculation that the cause of the Nevada tragedy was an event called “sympathetic reaction,” something that occurs from the same munitions in a magazine, store, aircraft or vehicle. IMX-101 was also tested against this sort of risk.

Testing showed the new explosive had far greater safety features like improved thermal and shock sensitivity. It passed all of the U.S. Army’s tests.

Over the next five years, BAE Systems will produce the explosives at the Holston Army Ammunition Plant in Tennessee – a plant capable of producing millions of pounds of IMX-101 on an annual basis.

Ballet dancer turned defense specialist Allison Barrie has traveled around the world covering the military, terrorism, weapons advancements and life on the front line. You can reach her at wargames@foxnews.com or follow her on Twitter @Allison_Barrie.


View the original article here

Thứ Ba, 26 tháng 3, 2013

Bye bye, TNT: New generation of explosives for the Army

  • M795_projectiles.jpg

    M795 projectiles like the ones pictured here will soon become equipped with IMX-101, making them far less likely to explode if dropped, shot at or hit by a roadside bomb during transport.U.S. Marine Corps / Sgt. Christopher R. Rye

  • new explosives.jpg

    BAE's Holsten munitions plant, where IMX-101 is manufactured.BAE Systems

Seven Marines were killed in Nevada last week and more injured during a live-fire training exercise with mortar rounds -- a reminder of just how important it is to make advances in less dangerous explosives.

A far stabler new explosive called IMX-101 will soon make soldiers safer on and off the battlefield -- and the U.S. Army on Friday ordered as much as $780 million worth of it.

Hoping to reduce the risk of Nevada-type incidents in the future, the Army will use this new explosive as a replacement for TNT in artillery rounds. Within 10 years, it could completely replace TNT in all large caliber munitions.

TNT vs IMX-101
The new explosives are part of a class called Insensitive Munitions eXplosives or IMX. IMX-101 packs the same punch as TNT, but is a less dangerous explosive for those handling it.

BAE Systems developed IMX-101 and fielded it in partnership with the Army at a plant in Holston, Tenn.

“The work we do at Holston is critical to the defense of our nation and to the safety of our men and women in uniform,” said Erin Moseley, president of BAE Systems’ Support Solutions sector. “IMX-101 is … revolutionizing military ordnance.”

An alternative to TNT or Trinitrotoluene, IMX-101 is instead made with a combination of insensitive “energetic” ingredients like 2,4-Dinitroanisole and Nitrotriazalone. It’s designed to remain chemically stable when subjected to a range of shocks like those created by explosions, gunfire, shrapnel impact and fire.

Traditional TNT can be temperamental and vulnerable to shocks causing it to detonate. Take a vehicle transporting munitions with TNT for example: The impact of a bullet, rocket-propelled grenade or improvised explosive alone could cause detonation, making the cargo as deadly as the attack.

Old rounds with TNT will likely stay stored where they are pending eventual safe disposal.

The Quest for Less Dangerous Explosives
The U.S. Army Common Low-cost Insensitive Munitions Explosive program was designed to identify less dangerous yet equally effective alternatives to TNT.;

As one of the candidates in this program, IMX-101 was loaded into an 155mm M795 artillery projectile and subjected to a battery of tests. It was evaluated against small arms and fragmented munitions attack as well as the impact from a shaped charged weapon.

It was also tested against slow heating from a fire -- say, in an adjacent vehicle -- as well as fast heating that could result from a vehicle fuel fire.

There has been some early speculation that the cause of the Nevada tragedy was an event called “sympathetic reaction,” something that occurs from the same munitions in a magazine, store, aircraft or vehicle. IMX-101 was also tested against this sort of risk.

Testing showed the new explosive had far greater safety features like improved thermal and shock sensitivity. It passed all of the U.S. Army’s tests.

Over the next five years, BAE Systems will produce the explosives at the Holston Army Ammunition Plant in Tennessee – a plant capable of producing millions of pounds of IMX-101 on an annual basis.

Ballet dancer turned defense specialist Allison Barrie has traveled around the world covering the military, terrorism, weapons advancements and life on the front line. You can reach her at wargames@foxnews.com or follow her on Twitter @Allison_Barrie.


View the original article here