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S the Experimental Study on a Low Speed Oblique Plate

Author: LiuZuo
Tutor: YangJiMing
School: University of Science and Technology of China
Course: Fluid Mechanics
Keywords: Oblique wing Drag reduction characteristics Initiative to adapt Oil flow method Smoke -line method Balance force measurement
CLC: V216
Type: Master's thesis
Year: 2011
Downloads: 46
Quote: 0
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Abstract


Aircraft generally use conventional symmetrical layout and oblique wing aircraft swept wing side swept front end of the formation of asymmetric aerodynamic layout . In transonic and supersonic flight, using this non- symmetrical layout of the aircraft than conventional aircraft symmetrical better drag reduction properties. In addition, the oblique wing aircraft Rake angle by changing the size of resulting in takeoff, landing or low-speed cruising flight aerodynamic layout with large aspect ratio , and high-speed flight in a small aspect ratio of the aerodynamic layout . In different environments in order to achieve aerodynamic changes to proactively adapt to changes in flight environment to effectively accomplish the mission . As a first step to study the layout of these aircraft , we study a model of inclined plate at different angles of attack and Rake angle under steady low-speed characteristics . Oil flow method using the model we first study the entire surface of the oil flow spectral structure, and then the model number of locations of interest we have further used to study the smoke line shows the spatial structure of the flow field . On the one hand , the smoke line shows the interpretation of the results obtained in experiments with oil flow method showed that the experimental results obtained ; the other hand, the oil flow shows the experimental results supplement the smoke line shows experimental phenomena obtained . Display and finally use smoke oil flow lines show a combination of approaches , we achieved analytical model flow structure around the purpose . The use of force balance , we got on the subject of the aerodynamic model . Combined with flow visualization results obtained in the experiment we focus on the lift characteristics of the model and roll torque characteristics , and ultimately from the angle of flow structure explains the lift characteristics of the model and roll torque characteristics of Genesis.

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