3000 hours of testing carried out on the Rolls-Royce Pearl 700 engine

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The Derby Rolls-Royce claims to have performed over 3,000 hours of testing on its new Pearl 700 engine.

The new engines were https://www.business-live.co.uk/technology/rolls-royce-strikes-17bn-euro-21690791

, including bird strikes and cold start temperatures, where the fuel takes on the stickiness of honey.

The British engineering giant said the engine performed equally well in hot conditions, successfully completing long endurance runs at high power and high cycle tests, and successfully demonstrating that it can run on high power. 100% sustainable aviation fuel (SAF).

The chemical and physical characteristics of sustainable aviation fuel – which is produced from sources such as cooking oil, vegetable oils, municipal waste, waste gases and agricultural residues – are almost identical to conventional jet fuel and can be safely mixed with it.

It can also use the same supply infrastructure and does not need planes or engines to be adapted.

Rolls-Royce said it has the potential to reduce net CO2 emissions by more than 75% compared to conventional jet fuel, with the possibility of further reductions in the future.

The Pearl 700 tests are the precursors to obtaining certification for the engine, which is the latest business aviation engine in development.

The flight test program began in February 2020, using a fleet of five dedicated flight test aircraft and one production test aircraft.

Rolls Royce said the engines were running “exceptionally well” and had already propelled Gulfstream’s new flagship aircraft, the G700, past its maximum operating speed and cruising altitude, flying almost as fast as the speed of the sound – Mach 0.99, or 1220 km / h.

The aircraft reached an altitude of 54,000 feet.

Usually, the G700 has a maximum operating speed of Mach 0.925 and a maximum cruise altitude of 51,000 feet, which allows it to fly above commercial air traffic and inclement weather.

On its first international visits to the Middle East and Europe, the plane set two city pair speed records and a third speed record on its return trip to the United States.

Dr Dirk Geisinger, Director of Business Aviation at Rolls-Royce, said: “Watching the Pearl 700 program unfold at such a rapid pace makes me really proud of the team that supports it.

“In addition to the numerous ground tests, the flight test campaign is progressing exceptionally well.

“Today it stands at over 3,000 engine flight hours on more than 2,000 engine flights and with the fleet of G700 test aircraft in flight, those numbers are increasing daily.

“The pioneering technology and exceptional performance of the Pearl 700 are helping Gulfstream business jets reach new standards for the high end of the ultra-long-range business jet market. “

Rolls-Royce claims the Pearl 700 is more efficient than similar engines, with a low-pressure system that results in more takeoff thrust, better thrust-to-weight ratio and 5% more efficiency.

Development work is underway in Germany.


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