Name: How Long Can the B-52 Continue in Service?
Uploaded: 2021-06-14T08:47:27.000Z
Duration: 14 min 50 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Imagine a Sopwith camel biplane which first saw service in 1917 during the first world

war and then using the same aircraft in combat missions right up until the last days of the

Vietnam war in 1975. That's a service life of 58 years which also spans a massive change

Now look at the Boeing B-52 Stratofortress, aka the BUFF or Big Ugly Fat Fellow, last

ones were built the same year as I was born, 1962, 58 years ago. At that age you would

think it would have been retired long ago, but with ongoing upgrades, they could be in

service till 2040 at a minimum and even pushing into the 2050's and possibly beyond, that's

100 years old. So why would they keep them in service for that long and how are they

going to make a very analogue aircraft relevant in the era of digital warfare.

The USAF has gone through a lot of aircraft in its history with some coming and going

within a few years and yet others like the C-130 cargo plane, the A-10 Warthog and the

C-5 Galaxy, which we spoke about in the last video have been around for at least 40 years

and in the case of the C-130, for 64 years but none are likely to outlast the B-52.

So what makes the B-52 so different that it should be kept going for so long?. Why would

they still use the same aircraft that was active in the Cuban missile crisis of 1962,

the Vietnam war, that flew 24/7 for 8 years fully loaded with nuclear weapons around the

Soviet Union, then through both Iraq wars, Afghanistan and recently against ISIS.

Pilots joke that if you flew one upside down, chicken bones from Siagon would fall out.

Some of the aircrews today are the children and even grandchildren of previous B-52 crews,

its a true multi-generational plane They also joke that once they have flown their

B-1s and B-2s to the boneyard, they will fly them home again in a B-52, the irony is that

it may turn out to be true. Step into the cockpit of a B-52 and your stepping

into a 1960s aircraft, which flies like a 1960s aircraft and yet it's still here.

But it wasn't meant to be this way, it was due to retire in 1996, which slid to 2000,

then 2003 and eventually ended up at 2040, and now it's 2050 and may even go further

into the future. Part of the reason is that it can still do

the job it was designed for exceptionally well, to drop bombs, lots of them, of every

type that is available in the US arsenal and to do that almost anywhere, air defences allowing.

Its also still a major deterrent, sending in the B-52s even if it's just to fly around

doing reconnaissance projects the power of the US military to both real and potential

enemies. Another more pressing reason is that its eventual

replacement, the B-21 Raider isn't expected to reach its initial operating capability

until at least 2030, barring technical issues and cost implications which plagued earlier

programs like the B-2 and F-35. And on the issue of cost, the B-52 was bought

and paid for a very long time ago with the last B-52H's being built in 1962 and those

working out at about $88 million each in today's money.

Compare that to B-21 Raider, each one of those will cost in the region of $550 million with

the total program cost including R&D at $97 Billion for what is believed to be about 135

aircraft but the final number is yet to be determined.

Updating the B-52 will be expensive but nowhere near what developing a new aircraft would

be. But of course, you will still have a 1960s aircraft but with lots of new electronics

and engines. The thing is that no one has ever kept a front line combat aircraft in

service for what could be at least 80 years and more likely a 100 years.

Even so, there have been a lot of changes over the years since the last B-52s were built.

It started out as a front line high altitude nuclear bomber but as air defences improved

in the Soviet Union it took on roles more suited to its capabilities and were air defences

were less sophisticated. But the days of carpet bombing like in Vietnam

and gravity dropped nuclear weapons is over, now its more about using standoff weapons

like cruise missiles at a distance or where more direct bombing allows, precision-guided

ordinance is used. There are also on any given day more B-52s

available for immediate action than B-1s or B-2s. Giving up the B-52 would greatly lessen

the long-range bombing capabilities of the USAF, something which has diminished a lot

since the end of the cold war. They have even bought back ones from the boneyard to replaced

badly damaged or crashed ones in recent years. The B-52s huge fuel capacity not only gives

it a very long range of over 14,000km carrying 35 tons of bombs on one tank full, it can

also be refuelled in the air giving it an almost unlimited range, engine oil allowing.

That also allows it to “loiter” around at a safe distance but herein lies another

problem. The engines its uses are the Pratt & Whitney's

TF33. Eight are used on each B-52, two of which are placed together in four engine nacelles,

two on each wing. These were developed in 1958 and manufactured

up until 1985 with over 8000 being produced. The 744 B-52s accounting for nearly 6000 of

them. But since then engine technology has improved greatly becoming more powerful and

more efficient, so continuing to use 1950s tech engines has kept the cost of running

the B-52 high in both maintenance and fuel. One of the problems about fitting newer more

powerful engines is that it could create damaging stress on the wings and airframes that won't

show up until after they are fitted. There were no 3D computer models or stress

simulators back in the 50s and even now it's a difficult engineering balancing act to pull

off matching the TF33s closely in weight and size and still giving improved performance

and economy without causing the wings to fall off. Replacing the engines and wings together

would push up the costs dramatically. There have been several attempts to re-engine

the surviving aircraft, as early as the mid 70's Boeing looked at replacing the engines

and wings. In 1982 Pratt & Whitney suggested replacing

them with PW2000 engines. In 1996 Rolls Royce proposed fitting them

with RB211-535s on a lease-purchase scheme but that was rejected because the USAF was

against leasing combat assets. In 2003 and after the cost of maintaining

the TF33's had tripled in a decade, a $4.7 billion engine refitting program was looked

at again with a proposed competition between the Rolls Royce RB211, Pratt & Whitney PW2000

and CFM56. It was suggested that whichever engine was

chosen, a cost-saving of $11-$15 billion could be achieved and the B-52's range would be

increased by 22% and loiter times could be tripled but this also went by the wayside.

In 2018 another engine refit program called the “Commercial Engine Re-engining Program

(CERP)” was proposed and as of April 2020, Pratt & Whitney, GE and Rolls Royce were tasked

with producing plans for supplying 608 new digital engines with service and spares support

until 2050. The winner to supposed to be announced in May 2021 but in the current political and

financial climate, who knows what will happen. Another reason why the B-52 is still here

60 years later is the design of the aircraft itself which has been described as both over-engineered

and yet under-engineered at the same time, so what does that mean.

Even 60 years later, the condition of the remaining 76 aircraft's overall structure

has stood the test of time. In terms of the airframe itself, its over-engineered, all

the planes still in service which are the later G and H variants and still use the original

airframe. To a similar extent the flight Controls, like the yokes, the seats, the wings and flight

control surfaces, linkages and tail assembly are the same as when they rolled out of the

factory back 1960-62. Obviously, they are well looked after with

regular maintenance and any repairs are done as deemed necessary but there is a lot of

the original 1950s designed parts still there, a testament to designers to make something

that would last. However, this also a problem when it comes

to sourcing parts which haven't been made for 60 years, so visits to the boneyard and

previously scrapped B-52's are common occurrence. So what about the under engineering, well,

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How Long Can the B-52 Continue in Service?

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