Endurance performance optimization method integrating climb, cruise and descending

An optimization method and voyage time technology, applied in three-dimensional position/channel control, non-electric variable control, instruments, etc., can solve problems such as short board, insufficient voyage performance, etc., and achieve improved performance indicators and good voyage performance. Effects of Basics, Extended Functions, and Uses

Active Publication Date: 2020-02-14
CHENGDU AIRCRAFT INDUSTRY GROUP
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Problems solved by technology

However, the flight time of climbing, cruising and descending is not a small amount in the flight profile of the optimal flight time. If we only pursue the optimization of a single task segment, it will inevitably lead to local optimum, and cause shortcomings and deficiencies in other stages.
At the same time, the cruising segment occupies the vast majority of the entire voyage flight profile. If you choose the same speed for cruising, it is easy to fall into local optimization.
Therefore, considering only single or non-integral multiple mission segments is not enough to obtain optimal airtime performance

Method used

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  • Endurance performance optimization method integrating climb, cruise and descending
  • Endurance performance optimization method integrating climb, cruise and descending
  • Endurance performance optimization method integrating climb, cruise and descending

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Embodiment Construction

[0051]The main steps of the present invention are divided into: a. selection of cruising strategy under single weight; b. selection of climbing segment strategy; c. selection of descent segment strategy; d. overall cruising segment strategy selection; The strategy completes the optimization of airtime performance. (Note: The strategy includes the altitude and speed of the flight).

[0052] flight profile see figure 1 , are three mission segments: climbing segment, cruising segment and descending segment, wherein the climbing segment and the descending segment are composed of many climbing intervals and descending intervals respectively, and the cruising segment is composed of cruising intervals of different weights. For details on this plan, see figure 2 : 1) Through the calculation and analysis of cruise performance under a single weight, the optimal cruising strategy under different heights and different weights is selected; 2) The overall calculation and optimization of ...

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Abstract

The present invention provides an endurance performance optimization method integrating climb, cruise and descending. The method comprises the following steps of selecting an optimal endurance cruisestrategy through cruise performance analysis under a single weight; integrally optimizing climb and level flight performance data of a climb interval in order to obtain an optimal endurance climb strategy; respectively accumulating oil consumption of the climb interval and a descending interval in order to obtain oil consumption of a climb section and a descending section, carrying out front-backsqueeze, computing the oil quantity of a cruise section, dividing different oil volume intervals, and carrying out endurance optimization of the whole cruise section in order to obtain endurance of the optimal cruise strategy; respectively accumulating the endurance of the climb interval and the descending interval in order to obtain the endurance of the whole climb section and the descending section; and piecewise accumulating the endurance of the climb section, the cruise section and the descending section in order to obtain the optimal endurance of the whole flight profile.

Description

technical field [0001] The present invention relates to the field of aviation technology, especially the technical field of flight time allocation planning Background technique [0002] At present, the biggest function of drones in the military field is reconnaissance, and the premise of reconnaissance is ultra-high flight time performance, that is, the ability to stand by in the air. A typical airtime flight profile includes three main mission segments: climb, cruise, and descent. Among them, cruising is divided into cruising segments with different weights. In order to achieve ultra-long voyage performance indicators, researchers have conducted comprehensive and in-depth research. For example, Zhang Yunfei proposed to adopt the flight strategy of changing attitude and speed when cruising at the same altitude to achieve the maximum flight time (Zhang Yunfei, Luo Xun, Xiang Jinwu, etc. Calculation of flight range and flight time of propeller aircraft at constant altitude[J...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
CPCG05D1/101
Inventor 冯宇鹏程家林李涛覃瞾华
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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