Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter
Due to the wide application of relaxed static stability in the field of advanced fighter design and the value of further research on the related active control technology,it is necessary to conduct a more comprehensive analysis on the influence of relaxed static stability on the longitudinal flight...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Advances in Aeronautical Science and Engineering
2021-12-01
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| Series: | Hangkong gongcheng jinzhan |
| Subjects: | |
| Online Access: | http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2021038?st=article_issue |
| _version_ | 1797955113255436288 |
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| author | HUANGFU Naizhang YANG Bei DAN Zhihua SUN Penghui |
| author_facet | HUANGFU Naizhang YANG Bei DAN Zhihua SUN Penghui |
| author_sort | HUANGFU Naizhang |
| collection | DOAJ |
| description | Due to the wide application of relaxed static stability in the field of advanced fighter design and the value of further research on the related active control technology,it is necessary to conduct a more comprehensive analysis on the influence of relaxed static stability on the longitudinal flight performance of aircraft. In this paper,the center of gravity is taken backward as the way to relax the static stability,the relationship between the relaxed static stability and the pitching moment coefficient of a certain fighter jet is analyzed to build the nonlinear model of fighter jets and analyze the open-loop characteristics. On this basis,the influence mechanism of the relaxed static stability on the operational equilibrium of the aircraft is analyzed to linearize the nonlinear model of the fighter aircraft,and the influence of the relaxed static stability on the step response characteristics and the long and short period modal characteristics of the longitudinal linear model of the aircraft is analyzed. The simulation results show that the relaxed static stability can increase the pitching moment coefficient and improve the aircraft performance,but it may cause the modal characteristics of the aircraft body to deteriorate,which needs to be considered in the design of control rate. |
| first_indexed | 2024-04-10T23:28:09Z |
| format | Article |
| id | doaj.art-1de8d0b1d4a347659ad5e73e98a23563 |
| institution | Directory Open Access Journal |
| issn | 1674-8190 |
| language | zho |
| last_indexed | 2024-04-10T23:28:09Z |
| publishDate | 2021-12-01 |
| publisher | Editorial Department of Advances in Aeronautical Science and Engineering |
| record_format | Article |
| series | Hangkong gongcheng jinzhan |
| spelling | doaj.art-1de8d0b1d4a347659ad5e73e98a235632023-01-12T10:02:54ZzhoEditorial Department of Advances in Aeronautical Science and EngineeringHangkong gongcheng jinzhan1674-81902021-12-01126506110.16615/j.cnki.1674-8190.2021.06.052021065Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced FighterHUANGFU Naizhang0YANG Bei1DAN Zhihua2SUN Penghui3School of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, ChinaSchool of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, ChinaNo.1 Department, Shanghai Aerospace System Engineering Institute, Shanghai 201109, ChinaSchool of Energy and Power Engineering, Beihang University, Beijing 100191, ChinaDue to the wide application of relaxed static stability in the field of advanced fighter design and the value of further research on the related active control technology,it is necessary to conduct a more comprehensive analysis on the influence of relaxed static stability on the longitudinal flight performance of aircraft. In this paper,the center of gravity is taken backward as the way to relax the static stability,the relationship between the relaxed static stability and the pitching moment coefficient of a certain fighter jet is analyzed to build the nonlinear model of fighter jets and analyze the open-loop characteristics. On this basis,the influence mechanism of the relaxed static stability on the operational equilibrium of the aircraft is analyzed to linearize the nonlinear model of the fighter aircraft,and the influence of the relaxed static stability on the step response characteristics and the long and short period modal characteristics of the longitudinal linear model of the aircraft is analyzed. The simulation results show that the relaxed static stability can increase the pitching moment coefficient and improve the aircraft performance,but it may cause the modal characteristics of the aircraft body to deteriorate,which needs to be considered in the design of control rate.http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2021038?st=article_issuerelaxed static stabilitynonlinear mathematical modelflight characteristicsadvanced fighter |
| spellingShingle | HUANGFU Naizhang YANG Bei DAN Zhihua SUN Penghui Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter Hangkong gongcheng jinzhan relaxed static stability nonlinear mathematical model flight characteristics advanced fighter |
| title | Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter |
| title_full | Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter |
| title_fullStr | Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter |
| title_full_unstemmed | Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter |
| title_short | Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter |
| title_sort | study on longitudinal flight characteristics and relaxed static stability of advanced fighter |
| topic | relaxed static stability nonlinear mathematical model flight characteristics advanced fighter |
| url | http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2021038?st=article_issue |
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