Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft
This paper presents a numerical investigation on the lift augmentation at subsonic speeds by using lateral jets for a hypersonic aircraft equipped with a waverider-type lifting body, which consists of three main parts. The jet slots were arranged along the side edges of the lifting body to study the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/9/12/745 |
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| author | Haifeng Wang Jianxia Liu Feng Deng Guoshu Li Yunguang Ding Qiang Xia Fan Zhang |
| author_facet | Haifeng Wang Jianxia Liu Feng Deng Guoshu Li Yunguang Ding Qiang Xia Fan Zhang |
| author_sort | Haifeng Wang |
| collection | DOAJ |
| description | This paper presents a numerical investigation on the lift augmentation at subsonic speeds by using lateral jets for a hypersonic aircraft equipped with a waverider-type lifting body, which consists of three main parts. The jet slots were arranged along the side edges of the lifting body to study the effect of lateral blowing on the lift augmentation at a freestream Mach number of 0.3. The numerical results based on solving the Reynolds-averaged Navier–Stokes equation indicate that a well-designed lateral blowing can produce a significant lift rise. Then, further work was carried out to investigate the effects of jet parameters, including the jet location, the blowing strength and the blowing direction on lift augmentation, and to provide insights into the associated flow physics. It was found that blowing on the middle and rear parts of the lifting body achieves the maximum lift augmentation among the chosen configurations. Additionally, it was confirmed that the lift augmentation increases as the jet momentum increases, and blowing in the direction of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>θ</mi><mrow><mi>j</mi><mi>e</mi><mi>t</mi></mrow></msub></mrow></semantics></math></inline-formula> = −45°, which means the jet blows slightly towards the lower surface of the lifting body, produces a larger lift rise than other directions. The lift augmentation can be explained by the fact that a well-designed lateral blowing can amplify the effectiveness of the vortices shedding from the side edges of the lifting body, resulting in an increase in the vortex lift. |
| first_indexed | 2024-03-09T17:27:06Z |
| format | Article |
| id | doaj.art-931816fe25f74464808594f678a93e9a |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T17:27:06Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-931816fe25f74464808594f678a93e9a2023-11-24T12:37:18ZengMDPI AGAerospace2226-43102022-11-0191274510.3390/aerospace9120745Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic AircraftHaifeng Wang0Jianxia Liu1Feng Deng2Guoshu Li3Yunguang Ding4Qiang Xia5Fan Zhang6College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaAerospace Technology Institute of CARDC, Mianyang 621000, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaScience and Technology on Space Physics Laboratory, Beijing 100076, ChinaScience and Technology on Space Physics Laboratory, Beijing 100076, ChinaScience and Technology on Space Physics Laboratory, Beijing 100076, ChinaScience and Technology on Space Physics Laboratory, Beijing 100076, ChinaThis paper presents a numerical investigation on the lift augmentation at subsonic speeds by using lateral jets for a hypersonic aircraft equipped with a waverider-type lifting body, which consists of three main parts. The jet slots were arranged along the side edges of the lifting body to study the effect of lateral blowing on the lift augmentation at a freestream Mach number of 0.3. The numerical results based on solving the Reynolds-averaged Navier–Stokes equation indicate that a well-designed lateral blowing can produce a significant lift rise. Then, further work was carried out to investigate the effects of jet parameters, including the jet location, the blowing strength and the blowing direction on lift augmentation, and to provide insights into the associated flow physics. It was found that blowing on the middle and rear parts of the lifting body achieves the maximum lift augmentation among the chosen configurations. Additionally, it was confirmed that the lift augmentation increases as the jet momentum increases, and blowing in the direction of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>θ</mi><mrow><mi>j</mi><mi>e</mi><mi>t</mi></mrow></msub></mrow></semantics></math></inline-formula> = −45°, which means the jet blows slightly towards the lower surface of the lifting body, produces a larger lift rise than other directions. The lift augmentation can be explained by the fact that a well-designed lateral blowing can amplify the effectiveness of the vortices shedding from the side edges of the lifting body, resulting in an increase in the vortex lift.https://www.mdpi.com/2226-4310/9/12/745flow controlhypersonic aircraftlift augmentationlateral jetvortex lift |
| spellingShingle | Haifeng Wang Jianxia Liu Feng Deng Guoshu Li Yunguang Ding Qiang Xia Fan Zhang Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft Aerospace flow control hypersonic aircraft lift augmentation lateral jet vortex lift |
| title | Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft |
| title_full | Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft |
| title_fullStr | Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft |
| title_full_unstemmed | Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft |
| title_short | Lift Augmentation at Subsonic Speeds by Lateral Jets for a Hypersonic Aircraft |
| title_sort | lift augmentation at subsonic speeds by lateral jets for a hypersonic aircraft |
| topic | flow control hypersonic aircraft lift augmentation lateral jet vortex lift |
| url | https://www.mdpi.com/2226-4310/9/12/745 |
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