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

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

Inactive Publication Date: 2012-06-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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] The present invention will now be further described in conjunction with the embodiments and drawings:

[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 and east coordinate system ("R g ″)

[0049] The origin of the coordinates 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 origin of the coordinate system is the center of the earth, and each axis points to the same point as "R g "The directions of each axis correspond to the same.

[0052] 4) Theater coordinate system ("Rc")

[0053] The ori...

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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 a fixed-height great-circle flight of an aircraft between equal-height waypoints, and a method for realizing a fixed-height great-circle flight between equal-height waypoints in consideration of the curvature of the earth, belonging to the field of flight control. Background technique [0002] Constant-altitude great-circle flight between equal-height waypoints refers to a flight mode in which the aircraft performs a great-circle flight along a given height between adjacent equal-height waypoints. It is based on a fixed-height great-circle flight between two equal-height waypoints. Basic. Accordingly, the present invention emphatically introduces the realization method of fixed altitude great circle flight between two preset equal-height waypoints. The fixed-altitude great-circle flight between two equal-height waypoints means that the aircraft will fly from the first preset waypoint to the second preset in a...

Claims

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Application Information

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Patent Type & Authority Applications(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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