Main Menu

Rolls-Royce BR700 / BR710 / BR715 / BR725

 

RR-BR710
BR710

 

The Rolls-Royce BR700 family of engines was developed by BMW and Rolls-Royce plc through the joint venture company BMW Rolls-Royce AeroEngines GmbH to power regional jets and corporate jets. Rolls-Royce took full control of the company in 2000, which is known as Rolls-Royce Deutschland. The company was established in 1990 and the first engine run (BR710) took place in September 1994.

The engine is manufactured in Dahlewitz, Germany.

The BR710 is a twin shaft turbofan, entered service on the Gulfstream V in 1997 and the Bombardier Global Express in 1998. This version has also been selected to power the Gulfstream G550. Another rerated version, with a revised exhaust system, was selected for the now cancelled Royal Air Force Nimrod MRA4s.

The BR710 comprises a 48in diameter single stage fan, driven by a two stage LP turbine, supercharging a ten stage HP compressor (scaled from the V2500 unit) and driven by a two stage, air-cooled, HP turbine.

The BR715 is another twin shaft turbofan, this engine was first run in April 1997 and entered service in mid-1999. This version powers the Boeing 717.

A new LP spool, comprising a 58in diameter single stage fan, with two stage LP compressor driven by a three stage LP turbine, is incorporated into the BR715. The HP spool is similar to that of the BR710.
The IP compressor booster stages supercharge the core, increasing core power and thereby net thrust. However, a larger fan is required, to keep the specific thrust low enough to satisfy jet noise considerations.

The BR725 is a variant of the BR710 with a three stage-axial flow low pressure turbine to power the Gulfstream G650. The engine has a maximum thrust of 17,000 pounds-force (75.6 kN). The BR725 has a bypass ratio of 4.2:1, and is 4 dB quieter than the predecessor BR710. Its 50-inch (127 cm) fan assembly consists of 24 swept titanium blades.

The BR725 prototype underwent component bench and its first full engine run in spring 2008 and European certification was achieved in June 2009. The first Gulfstream G650, with BR725 engines, was delivered in December 2011.
 
Variants:
BR700-710A1-10
Variant with a 65.6kN take-off rating and a maximum diameter of 1820mm.
 
BR700-710A2-20
Variant with a 65.6kN take-off rating and a maximum diameter of 1820mm.
 
BR700-710B3-40
Variant with a 69kN take-off rating for the BAE Systems Nimrod MRA4.
 
BR700-710C4-11
Variant with a 68.4kN take-off rating and a maximum diameter of 1785mm.
 
BR700-715A1-30
Variant with an 83.23kN take-off rating for Boeing 717-200 basic gross weight variants.
 
BR700-715B1-30
Variant with an 89.68kN take-off rating.
 
BR700-715C1-30
Variant with a 95.33kN take-off rating for Boeing 717-200 high gross weight variants.
 
BR700-725A1-12
Variant with a 71.6kN take-off rating.
 
Applications:
Bombardier Global Express
Boeing 717
Gulfstream V
Gulfstream G650
BAE Systems Nimrod MRA4
Rekkof/ Fokker XF70/XF100
Tupolev Tu-334

 

Specifications:

BR710-48
Thrust: 14,750-15,500 lb
Dry Weight: 4640 lb
Overall Length: 134.0 in
Fan Diameter: 48.0 in

BR715-58
Thrust: 18,500-22,000 lb
Dry Weight: 6155 lb
Overall Length: 147.0 in
Fan Diameter: 58.0 in

BR725-50
Thrust: 15,000-17,000 lb
Dry Weight: 4912 lb appx
Overall Length: 202.0 in nacelle
Fan Diameter: 50.0 in

 

 

 

 

 

 


Copyright © 2017 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.