Design Flow and Flight Safety of RNP-AR Flight Procedure in Civil Aviation Airport

In order to improve the safety and comfort of the aircraft in the approach phase, the factors affecting the flight safety of the aircraft are analyzed. First, a BAVO VNAV (Barometric vertical navigation program) approach to the nominal glide slope angle is proposed. Then, according to the actual operation environment of the airport, the best nominal glide slope angle of final approach which is most suitable for BAVO VNAV approach procedure is derived to solve the problems encountered in operation. During the experiment, with the experimental site as a reference, the approach flight procedure based on RNP-AR (required navigation performance) is designed to verify the optimal approach glide gradient from comfort, restriction and safety. Then, the optimization scheme based on the radial basis kernel function method is proposed for the near-field fuel quantity of the aircraft, and it is verified by the experimental data. Finally, in the concept of environmental protection, the exhaust gas optimization scheme based on Gaussian diffusion model is proposed. The results show that the optimal approach glide slope angle is between 2.8 and 3.2. This range can not only improve the safety of the aircraft in the approach stage, but also improve the comfort of passengers. In addition, the optimization scheme of fuel quantity and exhaust emission in the approach stage can also play an effective role in optimization. Among them, the fuel quantity after optimization is 15kg lower than before, and the exhaust emission also decreases. This exploration is mainly about the approach stage of aircraft flight, and the research results can provide reference for the related research.