Abstract:Bingo profile navigation system is an import component to ensure the safety of aircraft return. Large UAV puts forward higher requirements for Bingo profile navigation in the aspects to the charac-teristics of long endurance and high precision calculation. According to the characteristics of large UAV, a Bingo profile navigation system with high precision and global optimization is designed. Embedded in the ground control station solves the problem that the Bingo profile navigation system is constrained by the computing power of the computer on the aircraft. The system uses a complete UAV aerodynamic and engine model to make the calculation more accurate. Pontryagin minimum principle is used to ob-tain the global optimization results. In the system test, the validity of the system is verified by compar-ing the actual flight test results with the results of the Bingo profile navigation system.The test results show that the system can be used for the Bingo profile navigation calculation with high accuracy in cal-culating the amount of fuel required for the return flight of the aircraft.The UAV operator is prompted in time, and the system is stable.