eternal summit
The X-55 ACCA was a U.S. experimental composite cargo aircraft developed in the 2000s by Lockheed Martin’s Skunk Works and NASA from the Dornier 328JET, powered by two PW306B turbofans each producing 2,780 kgf (27.3 kN), measuring 21.23 m in length with a 20.98 m wingspan and 56.4 m² wing area, with an empty weight of ~11,300 kg, typical loaded weight of ~16,875 kg, and 19,500 kg maximum takeoff weight, capable of ~750 km/h top speed, ~2,220 km range, ~10,670 m ceiling, ~18 m/s climb rate, ~1,400 m takeoff distance, unarmed, featuring a pressurized composite cargo fuselage, flat-floor bay, and tricycle gear, flown only as a prototype in 2009 to validate large-scale bonded composite structures before retirement.
stiff dome
lost shale
