User avatar
Channex757
Posts: 1482
Joined: Sat Jun 18, 2016 7:07 am

Re: Best Replacement Engines for the B52

Fri Sep 22, 2017 12:30 am

Interesting video report (annoying voiceover though)
https://www.youtube.com/watch?v=NrFk-H6Ai0M

Rolls is to bid with the BR725, or F130 as it's known locally, with a US finishing and test facility to be built.
 
SCAT15F
Posts: 716
Joined: Fri Feb 09, 2007 8:34 am

Re: Best Replacement Engines for the B52

Tue Nov 07, 2017 3:10 am

That's strange, I thought earlier they were offering the BR715 which makes much more sense both in terms of fuel efficiency and thrust. The BR725 would actually offer less thrust than the TF-33 and higher fuel consumption than the BR715. The BR715's thrust margin would help with hot and hi too without pushing the engine so hard.
 
User avatar
Dutchy
Posts: 4021
Joined: Sat Nov 03, 2007 1:25 am

Re: Best Replacement Engines for the B52

Tue Nov 07, 2017 5:02 pm

Do they get a better fuel consumption with more trust? Seems like a no brainer for the BR715. Or doesn't the BR715 fit and the BR725 does? Or weight requirements etc.
Many happy landings, greetings from The Netherlands!
 
LightningZ71
Posts: 334
Joined: Sat Aug 27, 2016 10:59 pm

Re: Best Replacement Engines for the B52

Tue Nov 07, 2017 9:20 pm

The BR725 is within an inch smaller than the tf33p3 in fan diameter, 700 lbs lighter, is rates for within 100 lbs/ft of thrust and is the most modern variant of the br700 family. It is as close to a drop in fit as you will find for the application . Even that being the case, it's FAR from a simple project. The interior of the nacelle will still need to be heavily reworked, the wings will need to be opened to run plenty of wires, as will the interior of the forward fuselage. The cockpit will require extensive modifications both for the pilots and engineer. And, if you are ripping all of that up, you might as well do the fatigue life limited wing panels while you are at it. And, this will have to include work done on spare frames as well.

Not cheap at all.
 
jupiter2
Posts: 1186
Joined: Tue Jan 02, 2001 11:30 am

Re: Best Replacement Engines for the B52

Wed Nov 08, 2017 2:36 am

LightningZ71 wrote:
The BR725 is within an inch smaller than the tf33p3 in fan diameter, 700 lbs lighter, is rates for within 100 lbs/ft of thrust and is the most modern variant of the br700 family. It is as close to a drop in fit as you will find for the application . Even that being the case, it's FAR from a simple project. The interior of the nacelle will still need to be heavily reworked, the wings will need to be opened to run plenty of wires, as will the interior of the forward fuselage. The cockpit will require extensive modifications both for the pilots and engineer. And, if you are ripping all of that up, you might as well do the fatigue life limited wing panels while you are at it. And, this will have to include work done on spare frames as well.

Not cheap at all.


Can they add a toilet while they're at it ?
 
DigitalSea
Posts: 12
Joined: Sun Sep 08, 2013 6:28 pm

Re: Best Replacement Engines for the B52

Wed Nov 08, 2017 4:45 am

Would there be a problem with increasing the size & durability of the landing gear to allow it to sit higher off the ground to accommodate different engines?
 
LightningZ71
Posts: 334
Joined: Sat Aug 27, 2016 10:59 pm

Re: Best Replacement Engines for the B52

Wed Nov 08, 2017 4:58 am

Yes, cost. Making any significant changes to the gears would involve a major tear-up of the belly and require a lot of internal rework to handle proper load distribution. At some point, it's cheaper to just build a new conventional bomber.
 
User avatar
AirlineCritic
Posts: 1274
Joined: Sat Mar 14, 2009 1:07 pm

Re: Best Replacement Engines for the B52

Wed Nov 08, 2017 7:08 am

Is there no toilet on the B52? If true, that's amazing...
 
mmo
Posts: 1187
Joined: Thu Apr 18, 2013 3:04 pm

Re: Best Replacement Engines for the B52

Wed Nov 08, 2017 1:09 pm

AirlineCritic wrote:
Is there no toilet on the B52? If true, that's amazing...


With over 2000 hours on the D/G/H. It is VERY TRUE!
If we weren't all crazy we'd all go insane!
 
angad84
Posts: 1936
Joined: Mon Nov 05, 2012 3:04 pm

Re: Best Replacement Engines for the B52

Wed Nov 08, 2017 6:35 pm

mmo wrote:
AirlineCritic wrote:
Is there no toilet on the B52? If true, that's amazing...


With over 2000 hours on the D/G/H. It is VERY TRUE!

I'm going to have a word with the Bear pilots I know and tell them to STOP GRIPING ALREADY. Never realised the BUFF lacked a loo. Damn silly really.

Who is online

Users browsing this forum: PaddyOMaddy and 15 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos