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

Thứ Ba, 9 tháng 4, 2013

With North Korea warning of nuclear war, B-52s soar in 'Foal Eagle'

With North Korea's bellicose rhetoric escalating by the day -- on Wednesday a spokesman said its military has been cleared to wage a nuclear attack -- the annual U.S. training exercise Foal Eagle continues just over the border.

Foal Eagle, which began March 1 and will run through April 30 in conjunction with South Korea, includes a nuclear attack submarine, F-22s and B-2 Stealth bombers, and the nuclear-capable B-52s Stratofortress, a veteran aircraft that can drop the largest array of weapons in the U.S. inventory.

The behemoth is the biggest bomber that the Air Force flies. It's so big that it takes 32 airmen more than 12 hours to wash one. The B-52 can do just about anything from nuclear weapon deployment to close air support.

And this American classic has been making headlines a lot lately.

Beyond the annual Foal Eagle training exercise, Americans across the nation were outraged when "The Amazing Race" used the wreckage of a B-52 shot down in Vietnam as a prop recently, asking contestants to sing communist songs. CBS later apologized for the insensitive show.

It's served the military well for more than half a century.

Inside an American classic
Capable of flying at altitudes of 50,000 feet, the aircraft has a 185-foot wingspan and is nearly 160 feet long. The long-range B-52 heavy bomber flies at subsonic speeds and provides a global strike capability.

Just how fast is that? Built by Boeing, this aircraft can fly at Mach 0.86–that’s 650 miles per hour.

Precision guided missiles, gravity and cluster bombs are just a few of the payloads the B-52 can deliver against targets – a single B-52 can launch a whopping 70,000 pounds of mixed ordnance.

The latest version, the B-52H, can carry up to 20 air-launched cruise missiles, or nuclear weapons for precision delivery anywhere in the world.

The aircraft plays other critical roles beyond attack such as providing critical surveillance and monitoring capabilities.

According to the Air Force, just two B-52s can monitor 140,000 square miles in a mere two hours - that’s like scanning an area larger than the size of Great Britain and Newfoundland combined.

The aircraft can be kitted out with electro-optical viewing sensor systems and forward-looking infrared.

Remarkably, the B-52 has unlimited combat range. The bomber can be refueled while in flight. A KC-135 Stratotanker, for example, can deploy to keep a mission going. Without refueling, it has a range of around 8,800 miles.

In 1989, modernizing updates began, incorporating GPS and adaptations to carry 2,000-pound munitions, according to the Air Force. Developing a full array of advance weapons is also underway.

New avionics, electronic defense and offensive systems, and more powerful engines updates will continue to enhance the aircraft’s utility.

Only the H model is still in the Air Force inventory with aircraft assigned to the Air Force Global Strike Command at the 5th Bomb Wing at Minot AFB in North Dakota and the 2nd Bomb Wing at Barksdale AFB in Louisiana.

B-52Hs are also assigned to Air Force Reserve Command's 307th Bomb Wing at Barksdale.

Maintaining 50-year-young legends
Some of the B-52s are 50 years young -- meaning the dedication of crew chiefs and maintenance crews has been essential to maintaining this legendary aircraft.

After 450 hours or 24 months, the bomber’s parts are checked and rechecked. Subjected to a thorough intensive inspection, damaged pieces and key components are replaced.

Often 120 people will work around the clock.

These teams have ensured that the B-52s get airborne and return safely. They have kept the versatile aircraft in service for more than 60 years.

Proud Deployment History
Entering service in 1954, the B-52 Stratofortresses have been operating for nearly seventy years.

There are different models of the B-52: the B-52A first flew in 1954, and the B model entered service in 1955. Six years later in 1961, the first of 102 B-52H's was delivered to Strategic Air Command.

The B-52s delivered a whopping 40 percent of all the weapons dropped by all the coalition forces during Desert Storm, according to USAF statistics.

During Operation Enduring Freedom, they provided close air support through the use of precision-guided munitions.

In a single 2003 Operation Iraqi Freedom night mission, the B-52Hs launched approximately 100 conventional air launched cruise missiles.

The Air Force regularly deploys the B-52s with a bomber program based in Guam.

Every year, the B-52s participate in a number of training exercises.

The Global Strike Challenge, for example, is an opportunity for teams 96th Bomb Squadron setting up a a B-52H, aerial refueling training, flying mission at the range and landing.

War week is another exercise where B-52s work on aerial refueling, weapons tactics and high altitude maneuvering.

In Red Flag, another exercise with longstanding US allies, attack, air superiority, defense suppression are practiced to improve rapidly standing up combat and cooperation with partners.

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

Chủ Nhật, 7 tháng 4, 2013

With North Korea warning of nuclear war, B-52s soar in 'Foal Eagle'

With North Korea's bellicose rhetoric escalating by the day -- on Wednesday a spokesman said its military has been cleared to wage a nuclear attack -- the annual U.S. training exercise Foal Eagle continues just over the border.

Foal Eagle, which began March 1 and will run through April 30 in conjunction with South Korea, includes a nuclear attack submarine, F-22s and B-2 Stealth bombers, and the nuclear-capable B-52s Stratofortress, a veteran aircraft that can drop the largest array of weapons in the U.S. inventory.

The behemoth is the biggest bomber that the Air Force flies. It's so big that it takes 32 airmen more than 12 hours to wash one. The B-52 can do just about anything from nuclear weapon deployment to close air support.

And this American classic has been making headlines a lot lately.

Beyond the annual Foal Eagle training exercise, Americans across the nation were outraged when "The Amazing Race" used the wreckage of a B-52 shot down in Vietnam as a prop recently, asking contestants to sing communist songs. CBS later apologized for the insensitive show.

It's served the military well for more than half a century.

Inside an American classic
Capable of flying at altitudes of 50,000 feet, the aircraft has a 185-foot wingspan and is nearly 160 feet long. The long-range B-52 heavy bomber flies at subsonic speeds and provides a global strike capability.

Just how fast is that? Built by Boeing, this aircraft can fly at Mach 0.86–that’s 650 miles per hour.

Precision guided missiles, gravity and cluster bombs are just a few of the payloads the B-52 can deliver against targets – a single B-52 can launch a whopping 70,000 pounds of mixed ordnance.

The latest version, the B-52H, can carry up to 20 air-launched cruise missiles, or nuclear weapons for precision delivery anywhere in the world.

The aircraft plays other critical roles beyond attack such as providing critical surveillance and monitoring capabilities.

According to the Air Force, just two B-52s can monitor 140,000 square miles in a mere two hours - that’s like scanning an area larger than the size of Great Britain and Newfoundland combined.

The aircraft can be kitted out with electro-optical viewing sensor systems and forward-looking infrared.

Remarkably, the B-52 has unlimited combat range. The bomber can be refueled while in flight. A KC-135 Stratotanker, for example, can deploy to keep a mission going. Without refueling, it has a range of around 8,800 miles.

In 1989, modernizing updates began, incorporating GPS and adaptations to carry 2,000-pound munitions, according to the Air Force. Developing a full array of advance weapons is also underway.

New avionics, electronic defense and offensive systems, and more powerful engines updates will continue to enhance the aircraft’s utility.

Only the H model is still in the Air Force inventory with aircraft assigned to the Air Force Global Strike Command at the 5th Bomb Wing at Minot AFB in North Dakota and the 2nd Bomb Wing at Barksdale AFB in Louisiana.

B-52Hs are also assigned to Air Force Reserve Command's 307th Bomb Wing at Barksdale.

Maintaining 50-year-young legends
Some of the B-52s are 50 years young -- meaning the dedication of crew chiefs and maintenance crews has been essential to maintaining this legendary aircraft.

After 450 hours or 24 months, the bomber’s parts are checked and rechecked. Subjected to a thorough intensive inspection, damaged pieces and key components are replaced.

Often 120 people will work around the clock.

These teams have ensured that the B-52s get airborne and return safely. They have kept the versatile aircraft in service for more than 60 years.

Proud Deployment History
Entering service in 1954, the B-52 Stratofortresses have been operating for nearly seventy years.

There are different models of the B-52: the B-52A first flew in 1954, and the B model entered service in 1955. Six years later in 1961, the first of 102 B-52H's was delivered to Strategic Air Command.

The B-52s delivered a whopping 40 percent of all the weapons dropped by all the coalition forces during Desert Storm, according to USAF statistics.

During Operation Enduring Freedom, they provided close air support through the use of precision-guided munitions.

In a single 2003 Operation Iraqi Freedom night mission, the B-52Hs launched approximately 100 conventional air launched cruise missiles.

The Air Force regularly deploys the B-52s with a bomber program based in Guam.

Every year, the B-52s participate in a number of training exercises.

The Global Strike Challenge, for example, is an opportunity for teams 96th Bomb Squadron setting up a a B-52H, aerial refueling training, flying mission at the range and landing.

War week is another exercise where B-52s work on aerial refueling, weapons tactics and high altitude maneuvering.

In Red Flag, another exercise with longstanding US allies, attack, air superiority, defense suppression are practiced to improve rapidly standing up combat and cooperation with partners.

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, 4 tháng 4, 2013

With North Korea warning of nuclear war, B-52s soar in 'Foal Eagle'

With North Korea's bellicose rhetoric escalating by the day -- on Wednesday a spokesman said its military has been cleared to wage a nuclear attack -- the annual U.S. training exercise Foal Eagle continues just over the border.

Foal Eagle, which began March 1 and will run through April 30 in conjunction with South Korea, includes a nuclear attack submarine, F-22s and B-2 Stealth bombers, and the nuclear-capable B-52s Stratofortress, a veteran aircraft that can drop the largest array of weapons in the U.S. inventory.

The behemoth is the biggest bomber that the Air Force flies. It's so big that it takes 32 airmen more than 12 hours to wash one. The B-52 can do just about anything from nuclear weapon deployment to close air support.

And this American classic has been making headlines a lot lately.

Beyond the annual Foal Eagle training exercise, Americans across the nation were outraged when "The Amazing Race" used the wreckage of a B-52 shot down in Vietnam as a prop recently, asking contestants to sing communist songs. CBS later apologized for the insensitive show.

It's served the military well for more than half a century.

Inside an American classic
Capable of flying at altitudes of 50,000 feet, the aircraft has a 185-foot wingspan and is nearly 160 feet long. The long-range B-52 heavy bomber flies at subsonic speeds and provides a global strike capability.

Just how fast is that? Built by Boeing, this aircraft can fly at Mach 0.86–that’s 650 miles per hour.

Precision guided missiles, gravity and cluster bombs are just a few of the payloads the B-52 can deliver against targets – a single B-52 can launch a whopping 70,000 pounds of mixed ordnance.

The latest version, the B-52H, can carry up to 20 air-launched cruise missiles, or nuclear weapons for precision delivery anywhere in the world.

The aircraft plays other critical roles beyond attack such as providing critical surveillance and monitoring capabilities.

According to the Air Force, just two B-52s can monitor 140,000 square miles in a mere two hours - that’s like scanning an area larger than the size of Great Britain and Newfoundland combined.

The aircraft can be kitted out with electro-optical viewing sensor systems and forward-looking infrared.

Remarkably, the B-52 has unlimited combat range. The bomber can be refueled while in flight. A KC-135 Stratotanker, for example, can deploy to keep a mission going. Without refueling, it has a range of around 8,800 miles.

In 1989, modernizing updates began, incorporating GPS and adaptations to carry 2,000-pound munitions, according to the Air Force. Developing a full array of advance weapons is also underway.

New avionics, electronic defense and offensive systems, and more powerful engines updates will continue to enhance the aircraft’s utility.

Only the H model is still in the Air Force inventory with aircraft assigned to the Air Force Global Strike Command at the 5th Bomb Wing at Minot AFB in North Dakota and the 2nd Bomb Wing at Barksdale AFB in Louisiana.

B-52Hs are also assigned to Air Force Reserve Command's 307th Bomb Wing at Barksdale.

Maintaining 50-year-young legends
Some of the B-52s are 50 years young -- meaning the dedication of crew chiefs and maintenance crews has been essential to maintaining this legendary aircraft.

After 450 hours or 24 months, the bomber’s parts are checked and rechecked. Subjected to a thorough intensive inspection, damaged pieces and key components are replaced.

Often 120 people will work around the clock.

These teams have ensured that the B-52s get airborne and return safely. They have kept the versatile aircraft in service for more than 60 years.

Proud Deployment History
Entering service in 1954, the B-52 Stratofortresses have been operating for nearly seventy years.

There are different models of the B-52: the B-52A first flew in 1954, and the B model entered service in 1955. Six years later in 1961, the first of 102 B-52H's was delivered to Strategic Air Command.

The B-52s delivered a whopping 40 percent of all the weapons dropped by all the coalition forces during Desert Storm, according to USAF statistics.

During Operation Enduring Freedom, they provided close air support through the use of precision-guided munitions.

In a single 2003 Operation Iraqi Freedom night mission, the B-52Hs launched approximately 100 conventional air launched cruise missiles.

The Air Force regularly deploys the B-52s with a bomber program based in Guam.

Every year, the B-52s participate in a number of training exercises.

The Global Strike Challenge, for example, is an opportunity for teams 96th Bomb Squadron setting up a a B-52H, aerial refueling training, flying mission at the range and landing.

War week is another exercise where B-52s work on aerial refueling, weapons tactics and high altitude maneuvering.

In Red Flag, another exercise with longstanding US allies, attack, air superiority, defense suppression are practiced to improve rapidly standing up combat and cooperation with partners.

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

Chủ Nhật, 3 tháng 3, 2013

Nuclear bomb pulses solve police cold cases

Former U.S. nuclear weapons titan Lawrence Livermore National Laboratory is applying its bomb know-how to help solve police cold cases.

Lawrence Livermore was established in the Cold War to advance American nuclear weapons. The lab was responsible for many pivotal advances, from thermonuclear missile warheads for submarines to developing the first high-yield warheads small enough to be carried in bulk on a ballistic missile.

Now the national lab is applying its expertise in nuclear "bomb pulse" radiocarbon analysis to help solve cold cases.

According to the Bureau of Justice Statistics, there are more than 40,000 cold cases in the United States where traditional approaches have failed to identify the victim through their remains.

A Lawrence Livermore researcher -- working with international collaborators Swedish Karolinska Institute in Sweden and the British Columbia Institute of Technology -- have created a new way to figure out ages and birth dates on those cases.

The new approach, combining Livermore’s bomb know-how with new anthropological analysis and forensic DNA techniques, has already yielded results.

Tackling their first case, the researchers were able to identify the remains of a missing child 41 years after the body was discovered.

A child's cranium was found in a northern Canadian river bank in 1972; at the time, law enforcement believed it was from a child between the ages of seven and nine.

The case stayed cold for more than four decades until Simon Fraser University’s Centre for Forensic Research in Canada picked up the case and re-analzyed the cranium. After reviewing the skull measurements, skeletal ossification and dental formation, they decided the child was younger and died at approximately four and a half years old.

Lawrence Livermore then stepped in to help.

During the Cold War, above-ground nuclear weapons testing led to a marked escalation in global carbon-14 levels, from 1955 through 1963. While carbon-14 is in the environment naturally, the heightened levels from the bombs have been carefully tracked and recorded.

Using accelerator mass spectrometry technology, the lab boosts ions to super high  speeds to evaluate the half-life of their isotopes. Archaeologists use this sort of technology for radiocarbon dating. In this case, it registers the level of radioactive carbon-14 in the dental enamel or bones.

Dental enamel doesn’t turn over like most tissue, so carbon laid down during tooth formation acts sort of like the rings of a tree, revealing their age.

Scientists can then correlate the carbon-14 level with the records of airborne carbon-14 levels to figure out the age of the tooth and its owner to within 18 months. Other techniques are far less accurate, only narrowing age to within five or ten years.

Livermore first published their research on this pioneering enamel technique in a 2005 article in Nature.

While enamel dating won’t work with people before 1943 -- their teeth would have been formed before testing commenced in 1955 -- radiocarbon analysis can be used on bone to ascertain whether death occurred before or after 1955.

Forensic DNA analysis narrowed the list further, revealing that the child was male. Using DNA in the mitochondrial profile, they matched the young boy with a living maternal -- relative and solved the four-decade mystery.

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