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Aerion AS2

The Aerion AS2 was a proposed supersonic business jet that was being developed by Aerion Corporation. In May 2014, it was announced that the Aerion AS2 would be part of a larger Aerion SBJ redesign, which aimed for release after a seven-year developmental period. Aerion partnered with Airbus in September the same year. In December 2017, Airbus was replaced by Lockheed Martin. Its General Electric Affinity engine was unveiled in October 2018. In February 2019, Boeing replaced Lockheed Martin. Development stopped when Aerion ceased operations in May 2021.

Development
By May 2014, Aerion had invested over $100 million for technological development. The company announced at the May 2014 EBACE that it was redesigning its previous Aerion SBJ with a larger cabin, more range, and three yet unspecified engines for a $100 million-plus target price. The redesign aimed to fly a prototype in late 2018/early 2019 and certify the plane itself in 2021. Aerion intended to finance $3 billion for development, reducing risk for industry partners. In September 2014, Aerion partnered with Airbus. Airbus Defence have supersonic expertise and available resources. The unit cost was predicted to be at the May 2015 EBACE. In May 2015, NASA contracted Rockwell Collins to model supersonic boom on ground: predicting sonic booms and allowing pilots to see affected areas could ease restrictions against supersonic flights over inhabited areas. By September 2015, it was scheduled to enter service in 2023. In May 2017, Aerion was hoping to launch it in early 2018. 2017 redesign In December 2017, Aerion and Lockheed Martin announced that they would explore its joint development without Airbus, aiming to fly in 2023 and be certificated in 2025. On December 15, after discussions with Lockheed's Skunk Works, they announced a MoU to explore over a year the joint development of the supersonic business jet: engineering, certification and production.