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Method for realizing great circle flight of aircraft in constant height between isometric waypoints

An implementation method and technology of an aircraft, applied in the field of flight control, can solve problems such as complex dynamic models, inconvenient simulation implementation, etc.

Inactive Publication Date: 2013-11-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to establish a relatively complex dynamic model, which is not convenient for simulation and realization. The present invention provides a simple fixed-altitude great-circle flight control method with a simple model that is easy to realize, which overcomes the disadvantages of the traditional realization method.

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  • Method for realizing great circle flight of aircraft in constant height between isometric waypoints
  • Method for realizing great circle flight of aircraft in constant height between isometric waypoints
  • Method for realizing great circle flight of aircraft in constant height between isometric waypoints

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Embodiment Construction

[0044] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0045] First, the coordinate system that needs to be used is explained as follows:

[0046] 1) Geocentric System (″R d ")

[0047] The origin of the coordinates is the center of the earth, the X-axis is in the equatorial plane and points to the first meridian, the Z-axis points to the North Pole, and the Y-axis is determined by the right-hand rule.

[0048] 2) The local north sky east coordinate system (″R g ")

[0049] The coordinate origin is a selected point on the ground, the X-axis points to its true north direction, the Y-axis points to the sky, and the Z-axis points to its true east direction.

[0050] 3) "R g2 "Coordinate System

[0051] "R g2 The coordinate origin of the "coordinate system is the center of the earth, and each axis points to" R g Each axis of " points to the same correspondingly.

[0052] 4) Theater Coordinate System ("Rc")

[0...

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Abstract

The invention relates to a method for realizing great circle flight of an aircraft in constant height between isometric waypoints. The method is characterized by comprising the following steps of: providing specific implementation steps for realizing great circle flight of the aircraft in constant height between two isometric points through calculating real-time offset between an actual route and an ideal great circle route; and further expanding to great circle flight of the aircraft in constant height between the isometric waypoints. Through carrying out simulation verification on the method, the problem of realization of great circle flight of the aircraft in constant height can be well solved through regulating real-time height and real-time direction of the aircraft, the accuracy is high, and the requirement on mobility of the aircraft is low, so that the method can be applied to various research objects.

Description

technical field [0001] The invention relates to a method for realizing great-circle flight of an aircraft between contour waypoints, a method for realizing great-circle flight of an aircraft between contour waypoints in consideration of the curvature of the earth, belonging to the field of flight control. Background technique [0002] The fixed-altitude great-circle flight between equal-altitude waypoints refers to a flight mode in which the aircraft performs great-circle flight along a given height between adjacent equal-altitude waypoints. Basic. Accordingly, the present invention emphatically introduces a method for realizing a great circle flight with a fixed altitude between two preset contour waypoints. The fixed-altitude great circle flight between two equal-altitude waypoints means that the aircraft starts to fly from the first preset waypoint to the second preset waypoint along the fixed altitude within the plane determined by the two preset waypoints and the cente...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/10
Inventor 高晓光段晓稳李波符小卫
Owner NORTHWESTERN POLYTECHNICAL UNIV
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