Before revision: upright=1.25|Cut-away view of a prospective ADVENT engine The Adaptive Versatile Engine Technology (ADVENT) program was an aircraft engine development program run by the United States Air Force with the goal of developing an efficient adaptive cycle, or variable cycle engine for next generation military aircraft in the 20,000 lbf (89 kN) thrust class.
After revision: ; initial demonstrators were expected to beupright=1.25|Cut-away view of a prospective ADVENT engine The Adaptive Versatile Engine Technology (ADVENT) program was an aircraft engine development program run by the United States Air Force with the goal of developing an efficient adaptive cycle, or variable cycle engine for next generation military aircraft in the 20,000 lbf (89 kN) thrust class.