LEAP-1B Takes To The Skies

CFM International has launched flight testing of its LEAP-1B engine, the exclusive powerplant for the forthcoming 737 MAX.

CFM International has launched flight testing of its LEAP-1B engine, the exclusive powerplant for the forthcoming 737 MAX.

The first test took place on April 29 with the engine, mounted on a modified 747, completing a 5.5 hour flight from GE Aviation’s flight test facilities in Victorville, California.

The OEM said that the engine had “behaved well” as it undertook aeromechanical tests at a various altitudes.

Over the coming weeks, the engine will undergo tests gauging engine operability, stall margin, performance, emissions and acoustics, as well as examining new technologies in the engine such as its woven carbon-fibre composite fan, ceramic matrix composite shrouds and titanium-aluminide blades.

Allen Paxson, executive vice-president, CFM International, said: “The LEAP engine has been doing incredibly well throughout a very rigorous ground and flight test programme. Results to date are right in line with what we predicted.”

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