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Author Topic: Unbuilt B-52s  (Read 34205 times)

Offline Bill S

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Re: Unbuilt B-52s
« Reply #60 on: September 28, 2013, 11:10:42 am »
The Advanced Concepts folks a LTV took a look at the re-engine the B-52G using either a
C-17 or 757, nacelle and engine combination in an un-numbered document titled "Installation
of C-17 Nacelle & Engine on B-52G" This would be right in line for interest as C-17 Nacelles and
Pylons were currently in production at LTV.


They found there would be enough ground clearance on the outboard nacelles using either design.
They also discovered that a new pylon would have to be built, they could not use the C-17 pylon as
currently in manufacture as the engine needed to be mounted closer to the B-52 wing.


Also identified was a problem with Asymmetric Power with the loss of an outboard engine.


"The loss of the outboard engines' 40,000 lbs. of thrust on takeoff cannot be handled by
the B-52 as presently configured. The control system's authority with the existing fin/rudder
combination is inadequate."


Proposed solutions included: automatic thrust control to compensate for lost engine, more
throw on existing rudder, larger chord rudder.


Attached are a couple of drawings from the small report.
Source Vought Aircraft Historical Foundation


bill




Offline Triton

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Re: Unbuilt B-52s
« Reply #61 on: January 11, 2014, 12:06:35 am »
Artist's impression of re-engined Boeing B-52 Stratofortress.

Source:
http://www.boeing.com/news/frontiers/archive/2004/april/cover1.html

Offline Grey Havoc

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Re: Unbuilt B-52s
« Reply #62 on: April 30, 2016, 01:25:39 pm »
To the Stars

Offline JohnR

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Re: Unbuilt B-52s
« Reply #63 on: April 30, 2016, 05:15:40 pm »
What alterations to the T33 would be made to decrease it's fuel consumption?

Offline NeilChapman

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Re: Unbuilt B-52s
« Reply #64 on: April 30, 2016, 06:56:29 pm »
The Advanced Concepts folks a LTV took a look at the re-engine the B-52G using either a
C-17 or 757, nacelle and engine combination in an un-numbered document titled "Installation
of C-17 Nacelle & Engine on B-52G" This would be right in line for interest as C-17 Nacelles and
Pylons were currently in production at LTV.


They found there would be enough ground clearance on the outboard nacelles using either design.
They also discovered that a new pylon would have to be built, they could not use the C-17 pylon as
currently in manufacture as the engine needed to be mounted closer to the B-52 wing.


Also identified was a problem with Asymmetric Power with the loss of an outboard engine.


"The loss of the outboard engines' 40,000 lbs. of thrust on takeoff cannot be handled by
the B-52 as presently configured. The control system's authority with the existing fin/rudder
combination is inadequate."


Proposed solutions included: automatic thrust control to compensate for lost engine, more
throw on existing rudder, larger chord rudder.


Attached are a couple of drawings from the small report.
Source Vought Aircraft Historical Foundation


bill


If I remember correctly the Concord faced potentially similar problems with the loss of an engine. 


Offline frank

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Re: Unbuilt B-52s
« Reply #65 on: May 01, 2016, 05:54:51 am »
I wonder if reverting to the early B-52 tall tail would help. I suppose modifying the current rudder is more feasible.