Troposphere intermittent gliding flight control method

A gliding flight and control method technology, applied in the field of flight control, can solve the problem of not proposing an efficient use of updraft flight control methods, etc., and achieves the effect of easy research and simulation analysis, wide application, and improvement of the clearance time and range.

Active Publication Date: 2016-03-09
BEIHANG UNIV
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Problems solved by technology

However, the current research has mainly verified the feasibility of the aircraft using the updraft through experiments, and has not proposed a flight control method that efficiently utilizes the updraft

Method used

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  • Troposphere intermittent gliding flight control method
  • Troposphere intermittent gliding flight control method
  • Troposphere intermittent gliding flight control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] Assuming that there are two updrafts in the flying area of ​​the aircraft, the position and range distribution are as follows Figure 5 As shown, the maximum air velocity at the center of the updraft is all 3m / s. According to formula (2), the Gaussian distribution function describing the updraft is:

[0096] w = 3 * e - [ ( x - 100 ) 2 + ( y - 900 ) 2 2 * 1400 2 ] + 3 * e - [ ( x - 15000 ) 2 + ( y - 16000 ) 2 2 * 670 2 ] - - - ( twenty four )

[0097] Select a certain type of UAV, its main parameters are as follows:

[0098] Wingspan:

[0099] According to formula (9), a six-degree-of-freedom non-linear model of the UAV is established. According to formulas (13) and (15), the longitudinal and lateral decoupling nonlinear equations are given. According to the small disturbance linearization, the longitudinal and lateral ...

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Abstract

The invention discloses a troposphere intermittent gliding flight control method and belongs to the flight control technical field. The troposphere intermittent gliding flight control method is particularly applied to an aircraft to increase flight time or range of the aircraft by reasonably using updrafts in a troposphere region. The method includes the following steps that: step one, heat updraft modeling and judgment are carried out; step two, aircraft modeling is carried out, and a control law when updrafts do not exist is designed; and step three, intermittent gliding flight control is carried out. According to the control method of the invention, atmospheric energy is utilized to perform intermittent gliding flight, and therefore, the flight time and range of the aircraft can be improved, and the control method has important significance for the aircraft to realize long-flight time, long-range and attack patrol operational goals. The control method of the invention can be widely applied to small-sized unmanned aerial vehicles and small-sized cruise missiles, and can effectively improve the combat effectiveness of the unmanned aerial vehicles and cruise missiles.

Description

Technical field [0001] The invention relates to a tropospheric intermittent gliding flight control method, which belongs to the technical field of flight control, and in particular relates to a modeling control method suitable for an aircraft to reasonably use updrafts during tropospheric flight to improve the space time and range. Background technique [0002] Large birds use air energy to help themselves fly, increasing flight time and distance. Inspired by this phenomenon in nature, manned gliders have a long history of using atmospheric energy to increase their flight time or flight distance, but the study of their unmanned aerial vehicles is not long ago. At the beginning of the 21st century, Michael J. Allen of NASA Dryden Flight Research Center and others established an updraft model in the desert area in order to study the benefits of unmanned aerial vehicles in this type of updraft. Subsequently, Klas Andersson and others also verified the feasibility of the unmanned ae...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/04
Inventor 吴森堂邢智慧卜凡姚征贾翔
Owner BEIHANG UNIV
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