For GE Aviation, the energy density of jet fuel still maximises the Breguet range equation and higher pressure ratio cores; lower pressure ratio fans, low-loss inlets and lighter structures can further improve thermal, transfer and propulsive efficiency. Under the U.S. Air Force's Adaptive Engine Transition Program, adaptive thermodynamic cycles will be used for the sixth-generation jet fighter, based on a modified Brayton cycle and Constant volume combustion. Additive manufacturing in the advanced turboprop will reduce weight by 5% and fuel burn by 20%.
for ge aviation the energy density of jet fuel still maximises the breguet range equation and higher pressure ratio cores; lower pressure ratio fans low-loss inlets and lighter structures can further improve thermal transfer and propulsive efficiency under the us air force's adaptive engine transition program adaptive thermodynamic cycles will be used for the sixth-generation jet fighter based on a modified brayton cycle and constant volume combustion additive manufacturing in the advanced turboprop will reduce weight by 5% and fuel burn by 20%