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Your partner goes to the shop, but while at the counter gets confused. They swap the number for feet with the number for inches and buy the wrong length of ribbon. When they return home, you measure the ribbon and realise it's just 5/8 of the length that was required. Can you calculate the length of the ribbon that was requested?

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Pratt & Whitney receives FAA certification for Embraer E-Jet E2 engine

Pratt & Whitney's PurePower geared turbofan PW1900G engine, which powers the two largest aircraft in Embraer's second generation E-Jets family of commercial aircraft, has received certification from the Federal Aviation Administration (FAA). The E190-E2 made its first flight in May 2016 and the E195-E2's first flight was on March 29, 2017.

"The FAA validation of the PW1900G engine type certificate is a key program milestone," said Chris Calio, president, Commercial Engines, Pratt & Whitney. "The engine provides 23,000 lb of thrust and is currently powering five flight test vehicles with more than 900 hours of flight testing completed."

The certification test program spanned nearly 18 months and included sea level as well as operability and performance testing among the rigorous protocol the engine underwent.

The PW1900G engine, the fourth in the PurePower family to be certified, is scheduled to enter into customer service on the E190-E2 in 2018, with the 195-E2 scheduled to enter service in 2019.

The E-Jet E2 program is one of two programs that Pratt & Whitney and Embraer are working together on. Pratt & Whitney is part of the collaboration which supplies the V2500-E5 engine for the Embraer KC-390, which is under certification campaign. Pratt & Whitney also supplies the auxiliary power unit for the E-Jet E2 program.

June 7, 2017

Written by Michael Jones


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