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Author Topic: B-52 Re-engine Resurfaces As USAF Reviews Studies  (Read 24506 times)

Offline bobbymike

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #30 on: September 22, 2015, 06:38:00 pm »
A 'Skybolt' type system (my guess is smaller maybe a modified ATACMS booster) is what they must be talking about for the Tactical Boost Glide Air Launched missile research there was an RFI for posted on the Prompt Strike thread.
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Offline LowObservable

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #31 on: September 23, 2015, 06:59:06 am »
TBG would be similar in some ways, but with a different front end:  Skybolt was purely ballistic. However, it's not as tough as a global-range BGV in thermal or aerodynamic terms.

The engine economics are compelling. If the military was funded as a business it would have been done a decade or more ago - it would not only save fuel, but it would save tanker fuel (which is double-digit-times more expensive) and slash maintenance costs. (Given the B-52's planned lifetime and the performance of modern commercial engines, they'd never come off the wing.) The problem is that there is no legal mechanism for using tomorrow's operating cost savings to pay for today's acquisitions.
« Last Edit: September 23, 2015, 07:02:56 am by LowObservable »

Offline mz

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #32 on: September 23, 2015, 11:30:06 am »
A company could lease the engines to the government...

Online flateric

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #33 on: September 23, 2015, 12:31:25 pm »
"Take a look to the three brand-new B-52 upgraded with Volkswagen engines!"
via @CommonsAviation
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stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline George Allegrezza

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #34 on: September 23, 2015, 12:49:28 pm »
A company could lease the engines to the government...

As LO notes, there isn't an easy legal method for the government to do this, even though most everyone except John McCain can see the benefit of doing it.  Therein lies the rub.

Offline bobbymike

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« Last Edit: December 10, 2015, 06:19:05 pm by bobbymike »
Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.

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Offline bobbymike

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Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.

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Offline Archibald

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #37 on: February 07, 2017, 02:12:49 am »
Oh the sweet irony... A-10's TF-34s for the B-52s... will they build new engines or will they take TF-34s from the scrapped Warthog fleet ?
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Offline FighterJock

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #38 on: February 07, 2017, 10:21:01 am »
The last time the USAF tried to get an engine upgrade for the B-52s they tried to get brand new Rolls-Royce engines and they scrapped the program on cost grounds, this time they should go for brand new General Electric engines.

Offline bobbymike

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #39 on: March 02, 2017, 11:08:04 pm »
B-52 Re-Engining

—John A. Tirpak 3/3/2017

​Global Strike Command chief Gen. Robin Rand says he will “continue to advocate” for re-engining the B-52 bomber. “We have some money to look at that,” Rand told reporters at AWS17, though the funding is only enough for “feasibility analysis.” Rand said he wants new engines on the airplane “not for safety reasons” but because new powerplants would need less maintenance—saving on maintainers badly needed elsewhere—as well as reducing fuel consumption, and extending range, meaning Air Mobility Command could put some of its bomber-supporting tankers to use on other missions. New engines would also require fewer spare parts and spend more time on-wing, meaning more availability of the jets for action, Rand said. “There are about four or five good reasons” to do it, Rand said, but it would require the approval of Congress to use “creative” financing schemes to get the engines, he said. Those include a possible lease if USAF opted to do the program, but not buy the equipment outright. Rand later told Air Force Magazine that the ballpark price of a B-52 re-engining would be about $7 billion, assuming eight engines on each of the jets in the fleet. But “all dollars are in competition” with other worthy projects, Rand said. Vice Chief of Staff Gen. Steven Wilson, himself former head of AFGSC, has been a big proponent of B-52 re-engining “and still is,” Rand said.
Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.

Charles W. Eliot

Offline Hood

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #40 on: March 03, 2017, 01:16:16 am »
It would have made more sense had they followed through on this a decade or so ago. Now the B-52 fleet only has potentially a decade left in service it will be harder to recoup those capital costs.
If they are looking at fitting eight engines that suggests they are looking for a straight swap to fit the existing nacelles (or modified versions of) to avoid any extra costs of aerodynamic and structural trials etc. with four big turbofans and the time that would take.

Offline TomcatViP

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #41 on: March 04, 2017, 05:12:41 pm »
The structural test will be largely irrelevant, all the plane having aged differently. It will be better to stick to what was identified during the EMD phase and swap the engines only with a close match in term of impact on the dynamic structural modes.

That what they are doing now as it seems.

Offline bobbymike

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Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.

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Online sferrin

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Offline mkellytx

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Re: B-52 Re-engine Resurfaces As USAF Reviews Studies
« Reply #44 on: September 16, 2017, 02:32:27 pm »
The Rolls-Royce BR725 A1-12 is take-off rated at 16,900 which is close enough to the TF33's 17,000.  That's close enough to be a wash in my book, a 0.6% difference is pretty small.