A notional future product development chart revealed by Gulfstream at NBAA showed in vague terms an aircraft following the G500/G550 around 2009 and fitting above its current large-cabin, long-range aircraft. Industry sources say the company is working on a widebody with a 13,300km (7,200nm) range, compared with the G550's 12,500km at Mach 0.8.
A larger cabin and longer range would step up competition with Bombardier's Global Express and narrow the gap between Gulfstream's top-end aircraft and airliner-derived business jets.
R-R is believed to have been working with Gulfstream on the project since before mid-2005. The selected engine is thought to be a derivative of the BR710 with a larger diameter fan and hot-section improvements to generate 16,000-17,000lb thrust (71-75kN). The BR710 powers the G500/G550 and at its highest thrust rating produces 15,385lb for the G550.
The engine's 1.2m (48in) fan diameter is expected to increase to around 1.32m, and incorporate compressor improvements from the International Aero Engines V2500 Select development. The fan diameter of the 18,500-23,800lb-thrust BR715 powering the discontinued Boeing 717 is 1.47m.