US Air Force unveils new B-21 Raider nuclear stealth bomber
https://www.bbc.com/news/world-us-canada-63845082 (Photo)
The US Air Force has unveiled its newest nuclear stealth bomber, the B-21, which will gradually replace aircraft first flown in the Cold War.
The first new bomber in 30 years could cost nearly $700m (£569m) each and can carry nuclear and conventional weapons.
As expected, specific details of the aircraft remain shrouded in secrecy.
But US Defence Secretary Lloyd Austin said it was "a testament to America's enduring advantages in ingenuity and innovation".
The B-21 Raider was unveiled during a ceremony on Friday at manufacturer Northrop Grumman's facility in California.
Mr Austin said the plane would offer significant advances over existing bombers in the US fleet, stating that "even the most sophisticated air defence systems will struggle to detect the B-21 in the sky".
"Fifty years of advances in low-observable technology have gone into this aircraft," he said.
He added that the plane was also built with an "open system architecture," which allows for the incorporation of "new weapons that haven't even been invented yet".
While the potential for an uncrewed flight was not mentioned during the ceremony, a US Air Force spokeswoman said the aircraft was "provisioned for the possibility, but there has been no decision to fly without a crew".
The first flight by a B-21 is expected to take place next year.
It will eventually replace the B-1 and B-2 models and the fleet is estimated to cost $203bn (£165bn) to develop, buy and operate over 30 years, according to Bloomberg.
Six planes are currently in production, the manufacturer said, adding they would feature the "next generation of stealth" and that it is employing unspecified "new manufacturing techniques and materials".
The US Air Force is planning to acquire at least 100 of the aircraft.
This day in Aviation
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The last Boeing 747 has been rolled off the assembly line.
https://edition.cnn.com/travel/article/ ... index.html (Photos)
(CNN) — Over 50 years after the launch of the 'queen of the skies,' the very last Boeing 747 has been rolled of the assembly line.
The aircraft, a 747-8 Freighter, left the Boeing factory in Everett, Washington on Tuesday, and will be delivered to American cargo airline Atlas Air in early 2023.
The roll out marks the end of an era for the airplane, with the final flying days of the planet's most recognizable jetliner clearly approaching.
According to aviation analytics firm Cirium, only 44 passenger versions of the iconic plane are still in service. However, over 300 Boeing 747 freighters remain in use.
"For more than half a century, tens of thousands of dedicated Boeing employees have designed and built this magnificent airplane that has truly changed the world," Kim Smith, Boeing Vice President and general manager, 747 and 767 Programs, said in a statement.
"We are proud that this plane will continue to fly across the globe for years to come."
The first Boeing 747 made its maiden flight on February 9, 1969, a year before entering service with the fondly remembered airline Pan American World Airways.
It quickly became a passenger favorite. It's doubled as a flying White House as Air Force One, as well as being the setting for many a Hollywood airborne adventure.
However, in the years since then, many airlines have opted to replace their passenger 747s with larger, more advanced, and more efficient twin-engine planes.
In 2020, British Airways announced that it was retiring its fleet of Boeing 747s four years ahead of schedule.
"It is unlikely our magnificent 'queen of the skies' will ever operate commercial services for British Airways again due to the downturn in travel caused by the Covid-19 global pandemic," said the British flag carrier.
The most recent version of the aircraft is the 747-8 Intercontinental, with new wings, engines, and technologies unimaginable to the designers and pilots of the original 747.
The first wide-body
The 747 ushered in the era of the twin-aisle, wide-body passenger plane. But had it been up to Pan Am's founder, Juan Trippe, the celebrated jet might have been a double-deck version of the single-aisle Boeing 707.
Trippe pushed the plane's designers to come up with a double-decker, a shape that Boeing engineer Joe Sutter, known as the "father of the 747," called a "turkey."
It took a Boeing executive's initiative in a meeting in a Pan Am boardroom to change Trippe's mind. The dimensions of the room were exactly the same as the proposed wide-body 747's width and height, and Pan Am was impressed.
The interior of the 747 was developed in association with the Seattle-based firm Teague, Boeing's long-time cabin design partner.
It was the first plane to have almost vertical sidewalls and a high ceiling, giving passengers a feeling of space and openness.
Instead of a long, thin tube, the cabin was split up into "rooms," with galleys and lavatories installed as dividers.
It's a shape that has defined long-haul travel for nearly half a century.
Up-sized airports
The 747's dimensions were huge compared to the 707s and Douglas DC-8s that were the mainstay of airlines' international fleets in the 1960s.
With hundreds of passengers arriving and departing on every jumbo jet, airports had to quickly adapt, with expanded boarding lounges, check-in counters, and terminals.
Every international airline wanted to have the prestige of flying a 747, meaning that existing customs and immigration areas were soon overwhelmed with multiple, simultaneous arrivals of the big plane.
Ground-support equipment had to grow, too. Aircraft tugs got a lot bigger, to handle the 747's prodigious weight of over 750,000 pounds. Catering trucks were modified to reach the cabin doors far above the ramp, and refueling tankers now had to stretch to reach the underside of the massive wings.
Fabulous freight-hauler
The 747 was designed at a time when the airline industry expected the supersonic transport -- SST for short -- to be the aircraft of the future.
The world's first supersonic transport aircraft, the Soviet-designed Tupolev Tu-144, had made its maiden flight in 1968 and the Anglo-French Concorde took to the air two months later.
Experts in the 1960s predicted that the 747 would have a short lifetime as a passenger jet, eventually giving way to aircraft traveling at multiple times the speed of sound. So the 747's designers tried to future-proof the jumbo by engineering it to carrying cargo.
The main deck of the 747 was sized about 20 feet wide, to handle two standard cargo containers. To make loading easier, the nose of the cargo model of the 747 opened and pivoted upwards.
That meant that the cockpit had to be located above the main deck, giving the Queen its distinctive hump just behind the flight deck. What was originally envisioned as a crew rest area in that space became the jet's most renowned feature, the passenger lounge. Only in later versions did that upper deck get stretched to accommodate a large seating area.
As it turned out, the Boeing SST project -- the 2707 -- was canceled in 1971, the Tupolev Tu-144 was permanently grounded after only 55 scheduled flights, and Concorde made its final flight nearly 15 years ago.
As for the hardy 747, over 1,570 have been manufactured over the past half-century.
The last Boeing 747 commercial passenger jet to be delivered was in July 2017 -- a jumbo for Korean Air Lines -- and in January 2018 US passenger operations ended when Delta Air Lines Flight 9771 touched down in a jetliner boneyard in Marana, Arizona.
The new big fan
New airplanes and new engines are created at the same time. New aircraft designers might seek to consume less fuel, generate more power, and take advantage of lighter-weight designs from engine developers.
The 747 needed a huge jump in engine power and efficiency to get the massive plane in the air, and make money for the airlines. Pratt & Whitney changed the shape of jet engines forever with their JT9D turbofans for the 747. The engine differed from earlier power plants by having a huge fan at the front.
An enormous amount of air is forced into the engine, but only a small portion goes into the engine's core where it is compressed, mixed with fuel and ignited to drive the turbine. The internal turbine spins the huge fan, pushing the jet forward.
With most of the air flow directed around -- rather than through -- the core of the engine, it was the first "high-bypass" turbofan of the jet age.
The design makes the engine quieter, more powerful, and with better fuel efficiency. And instead of the scream of earlier generation jets, the 747 "buzzed" when it took off.
The 747 might have been the first, but now every passenger jet is powered by an incredibly reliable and sophisticated high-bypass turbofan engine.
The real game-changer?
The 747 went into service in the early 1970s, at a time of major societal change. It drove exponential growth in air travel, tourism, and connections between people around the world. In its first year, a fully-loaded 747 cut the cost of flying a passenger by half. Flying became instantly more accessible.
But maybe the award for the biggest change in air travel should go to the 747's older sibling, the 707. That smooth-flying, jet-powered pioneer was a quantum leap from the "piston-pounders" that preceded it. It connected continents in mere hours and showed the world the power of jet travel.
Brien Wygle, the co-pilot on the 747's first flight, and Boeing's former vice president of flight operations, certainly thinks so.
"The shorter flight times, the higher altitudes, the better pressurization -- a lot of things we brought out with the 707 were revolutionary," he told CNN Travel. "The 747 furthered that same direction, but you can't ignore what the 707 did."
"But the 747 was a remarkable airplane, and I loved it."
https://edition.cnn.com/travel/article/ ... index.html (Photos)
(CNN) — Over 50 years after the launch of the 'queen of the skies,' the very last Boeing 747 has been rolled of the assembly line.
The aircraft, a 747-8 Freighter, left the Boeing factory in Everett, Washington on Tuesday, and will be delivered to American cargo airline Atlas Air in early 2023.
The roll out marks the end of an era for the airplane, with the final flying days of the planet's most recognizable jetliner clearly approaching.
According to aviation analytics firm Cirium, only 44 passenger versions of the iconic plane are still in service. However, over 300 Boeing 747 freighters remain in use.
"For more than half a century, tens of thousands of dedicated Boeing employees have designed and built this magnificent airplane that has truly changed the world," Kim Smith, Boeing Vice President and general manager, 747 and 767 Programs, said in a statement.
"We are proud that this plane will continue to fly across the globe for years to come."
The first Boeing 747 made its maiden flight on February 9, 1969, a year before entering service with the fondly remembered airline Pan American World Airways.
It quickly became a passenger favorite. It's doubled as a flying White House as Air Force One, as well as being the setting for many a Hollywood airborne adventure.
However, in the years since then, many airlines have opted to replace their passenger 747s with larger, more advanced, and more efficient twin-engine planes.
In 2020, British Airways announced that it was retiring its fleet of Boeing 747s four years ahead of schedule.
"It is unlikely our magnificent 'queen of the skies' will ever operate commercial services for British Airways again due to the downturn in travel caused by the Covid-19 global pandemic," said the British flag carrier.
The most recent version of the aircraft is the 747-8 Intercontinental, with new wings, engines, and technologies unimaginable to the designers and pilots of the original 747.
The first wide-body
The 747 ushered in the era of the twin-aisle, wide-body passenger plane. But had it been up to Pan Am's founder, Juan Trippe, the celebrated jet might have been a double-deck version of the single-aisle Boeing 707.
Trippe pushed the plane's designers to come up with a double-decker, a shape that Boeing engineer Joe Sutter, known as the "father of the 747," called a "turkey."
It took a Boeing executive's initiative in a meeting in a Pan Am boardroom to change Trippe's mind. The dimensions of the room were exactly the same as the proposed wide-body 747's width and height, and Pan Am was impressed.
The interior of the 747 was developed in association with the Seattle-based firm Teague, Boeing's long-time cabin design partner.
It was the first plane to have almost vertical sidewalls and a high ceiling, giving passengers a feeling of space and openness.
Instead of a long, thin tube, the cabin was split up into "rooms," with galleys and lavatories installed as dividers.
It's a shape that has defined long-haul travel for nearly half a century.
Up-sized airports
The 747's dimensions were huge compared to the 707s and Douglas DC-8s that were the mainstay of airlines' international fleets in the 1960s.
With hundreds of passengers arriving and departing on every jumbo jet, airports had to quickly adapt, with expanded boarding lounges, check-in counters, and terminals.
Every international airline wanted to have the prestige of flying a 747, meaning that existing customs and immigration areas were soon overwhelmed with multiple, simultaneous arrivals of the big plane.
Ground-support equipment had to grow, too. Aircraft tugs got a lot bigger, to handle the 747's prodigious weight of over 750,000 pounds. Catering trucks were modified to reach the cabin doors far above the ramp, and refueling tankers now had to stretch to reach the underside of the massive wings.
Fabulous freight-hauler
The 747 was designed at a time when the airline industry expected the supersonic transport -- SST for short -- to be the aircraft of the future.
The world's first supersonic transport aircraft, the Soviet-designed Tupolev Tu-144, had made its maiden flight in 1968 and the Anglo-French Concorde took to the air two months later.
Experts in the 1960s predicted that the 747 would have a short lifetime as a passenger jet, eventually giving way to aircraft traveling at multiple times the speed of sound. So the 747's designers tried to future-proof the jumbo by engineering it to carrying cargo.
The main deck of the 747 was sized about 20 feet wide, to handle two standard cargo containers. To make loading easier, the nose of the cargo model of the 747 opened and pivoted upwards.
That meant that the cockpit had to be located above the main deck, giving the Queen its distinctive hump just behind the flight deck. What was originally envisioned as a crew rest area in that space became the jet's most renowned feature, the passenger lounge. Only in later versions did that upper deck get stretched to accommodate a large seating area.
As it turned out, the Boeing SST project -- the 2707 -- was canceled in 1971, the Tupolev Tu-144 was permanently grounded after only 55 scheduled flights, and Concorde made its final flight nearly 15 years ago.
As for the hardy 747, over 1,570 have been manufactured over the past half-century.
The last Boeing 747 commercial passenger jet to be delivered was in July 2017 -- a jumbo for Korean Air Lines -- and in January 2018 US passenger operations ended when Delta Air Lines Flight 9771 touched down in a jetliner boneyard in Marana, Arizona.
The new big fan
New airplanes and new engines are created at the same time. New aircraft designers might seek to consume less fuel, generate more power, and take advantage of lighter-weight designs from engine developers.
The 747 needed a huge jump in engine power and efficiency to get the massive plane in the air, and make money for the airlines. Pratt & Whitney changed the shape of jet engines forever with their JT9D turbofans for the 747. The engine differed from earlier power plants by having a huge fan at the front.
An enormous amount of air is forced into the engine, but only a small portion goes into the engine's core where it is compressed, mixed with fuel and ignited to drive the turbine. The internal turbine spins the huge fan, pushing the jet forward.
With most of the air flow directed around -- rather than through -- the core of the engine, it was the first "high-bypass" turbofan of the jet age.
The design makes the engine quieter, more powerful, and with better fuel efficiency. And instead of the scream of earlier generation jets, the 747 "buzzed" when it took off.
The 747 might have been the first, but now every passenger jet is powered by an incredibly reliable and sophisticated high-bypass turbofan engine.
The real game-changer?
The 747 went into service in the early 1970s, at a time of major societal change. It drove exponential growth in air travel, tourism, and connections between people around the world. In its first year, a fully-loaded 747 cut the cost of flying a passenger by half. Flying became instantly more accessible.
But maybe the award for the biggest change in air travel should go to the 747's older sibling, the 707. That smooth-flying, jet-powered pioneer was a quantum leap from the "piston-pounders" that preceded it. It connected continents in mere hours and showed the world the power of jet travel.
Brien Wygle, the co-pilot on the 747's first flight, and Boeing's former vice president of flight operations, certainly thinks so.
"The shorter flight times, the higher altitudes, the better pressurization -- a lot of things we brought out with the 707 were revolutionary," he told CNN Travel. "The 747 furthered that same direction, but you can't ignore what the 707 did."
"But the 747 was a remarkable airplane, and I loved it."
Governments are instituted among Men, deriving their just powers from the consent of the governed. Source
Re: This day in Aviation
The company I work for, Cargolux, is currently still operating thirty 747 cargo aircraft,
Re: This day in Aviation
This is one of those "never say never" stories. At some point in the future more will be produced to fill a need.
The model I liked that best was the stubby 747 SP. For some reason they just seemed fun to fly in.
The model I liked that best was the stubby 747 SP. For some reason they just seemed fun to fly in.
Governments are instituted among Men, deriving their just powers from the consent of the governed. Source
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Re: This day in Aviation
Although they were huge compared to most other aircraft, they didn’t provide any more seating room for those travelling in cattle class, just a means of getting 2-3 times as many people from A-B, so more efficient (I don’t know who benefited most, the airlines or the passengers?).
Still part of aviation’s progress and amazing that it’s lasted so long.
Still part of aviation’s progress and amazing that it’s lasted so long.
Re: This day in Aviation
747's will be around for a long time to come in the air cargo world because there isn't yet a direct replacement. The lifting nose door means that it will handle things that no other civil aircraft can manage.
Re: This day in Aviation
Also as the US Presidential command post aircraft. The two new models haven't even been delivered yet, thanks to Trump who f'kd up everything that he touched.
Governments are instituted among Men, deriving their just powers from the consent of the governed. Source
Re: This day in Aviation
A sad, sad story but needs to be remembered, the whole mess of a war does. I rotated home 15 days before the mission launched.
US airman recalls the horror of the Vietnam ‘Christmas bombings’ 50 years on
https://edition.cnn.com/2022/12/17/asia ... index.html (Many photos)
Operation Linebacker II saw more than 200 American B-52 bombers fly 730 sorties and drop over 20,000 tons of bombs on North Vietnam over a period of 12 days in December 1972....... (All from U-Tapao and Anderson AFB on Guam)
US airman recalls the horror of the Vietnam ‘Christmas bombings’ 50 years on
https://edition.cnn.com/2022/12/17/asia ... index.html (Many photos)
Operation Linebacker II saw more than 200 American B-52 bombers fly 730 sorties and drop over 20,000 tons of bombs on North Vietnam over a period of 12 days in December 1972....... (All from U-Tapao and Anderson AFB on Guam)
Governments are instituted among Men, deriving their just powers from the consent of the governed. Source