Engine maker Pratt & Whitney is set to announce an improved version of its geared turbofan engine used by Airbus' strong-selling A320neo jet family, sources familiar with the matter said on Wednesday. The update of Pratt's GTF engine will boost fuel efficiency by 1% and deliver 4% higher thrust when it starts to roll out in 2024. Pratt, owned by Raytheon Technologies Corp, is banking on the combination of improvements to help win orders, with the higher thrust an advantage for… (www.yahoo.com) 更多...