Cruise fuel flow calculation method for performance management of flight management system

Abstract

The invention discloses a cruise fuel flow calculation method for performance management of a flight management system. The method comprises the following steps of calculating the current gravitational acceleration of an aircraft according to the flight speed, the flight height, the flight position and the flight direction of the aircraft, and then establishing a force balance equation based on a basic pneumatic database; according to the exact weight of the current aircraft, obtaining a pneumatic attack angle in a cruise state through iteration, then calculating the value of the thrust of the aircraft through calculation, and obtaining the fuel flow corresponding to the thrust on the basis of the rotating speed polarity curves given by engines of different models; according to the number of engines of aircrafts of different models, obtaining the real-time fuel oil flow of the aircrafts of the models in the cruising state, and then calculating the related performance of the flight management field, such as flight prediction, fuel oil mileage monitoring, flight cost analysis, etc.

Description

【Technical field】 [0001] The invention belongs to the technical field of flight management, in particular to a calculation method for cruising fuel flow used for performance management of a flight management system. 【Background technique】 [0002] Accurate calculation of fuel flow is of great significance to flight management. Being able to calculate the accurate value of fuel flow under different conditions can effectively improve the accuracy of flight prediction and increase the flight safety margin. In addition, the problem of economic flight has always been an important issue that aircraft manufacturers are committed to solving. The flight process is mainly divided into three stages: climb, cruise, and descent. The climb and descent times are relatively short, so the analysis of fuel flow in the cruise stage is particularly important for the calculation of flight costs. important. [0003] The traditional way to calculate the cruise fuel flow is to interpolate the air...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a calculation method for cruising fuel flow used in flight management system performance management, to solve the problems in the prior art that the accuracy cannot be fully guaranteed, there are many errors, the safety margin is low, and it cannot be separated from the limitations of the airborne performance database. The problem

Images