U.S., April 26 -- United Airlines has officially declared an investment in the start-up JetZero, which specializes in blended wing body (BWB) aircraft. This innovative design aims to significantly improve jet fuel efficiency while enhancing the overall customer experience.

The investment outlines a potential order for up to 100 aircraft, with an option for an additional 100. This conditional purchase agreement is contingent upon JetZero meeting specific development milestones, including the successful flight of a full-scale demonstrator by 2027, as well as ensuring that the aircraft complies with United's safety, business, and operational standards.

JetZero's design minimizes drag and enhances lift across the entire wingspan, potentiall...