An iterative procedure for three-dimensional transonic wing design by the integral equation method

Takanashi, Susumu

doi:10.2514/6.1984-2155

Cited by 16 publications

(8 citation statements)

References 1 publication

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“…The target C p for the wing is chosen for each chord-wise section to ensure the wing has "straight isobars". 3 It is well known that elliptical wing loading lead to least induced drag for subsonic flow. Such constraints, as also constraints on lift and moment coefficients are easily incorporated into constraints on section-wise C p by interpolation and integration.…”

Section: B Challenges For Engineermentioning

confidence: 99%

Hybrid feedback design for subsonic and transonic airfoils and wings

Zhang

Rizzi

Nangia

2014

52nd Aerospace Sciences Meeting

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A hybrid inverse/optimization method for subsonic/transonic airfoil and wing shape design is presented with application to a range of airfoil and wing cases, in preparation for the test cases defined for the Special Session of SciTech 2014. The method is hybrid in the sense that it combines the traditional inverse design technique with an optimization procedure that determines the optimum target pressure distribution. This paper emphasizes the first part, the development of SCID, the Surface Curvature Inverse Design method, the theory upon which it is based, including many of the details involved with shocks, smoothing and cross flow. The application of SCID to wing design poses many challenges, and how they are met is discussed in the context of a number of inverse design test cases for airfoils and wings. The procedure works well for airfoils, whereas twist optimization for transonic wings remains a challenge. The real benchmarks for our hybrid approach are the three Optimization Discussion Group design problems. Solutions are presented for the drag minimization of the NACA airfoil along with the wing twist optimization problem, and conclusions are drawn from the results obtained. Work has started on the drag minimization of the CRM wing in transonic flight, and final results will be presented in a future paper.

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Section: B Challenges For Engineermentioning

confidence: 99%

Hybrid feedback design for subsonic and transonic airfoils and wings

Zhang

Rizzi

Nangia

2014

52nd Aerospace Sciences Meeting

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“…Since the birth of aircraft, designers have been trying various methods to improve its flight performance [1]. Traditional aircraft still can show good flight performance at a certain design state point.…”

Section: Introductionmentioning

confidence: 99%

The change characteristics of the Mach number used in different spaces on the pressure of the local wing and the subsequent improvement of the aircraft wing

Zhang¹,

Zhou²

2022

HSET

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Fluid mechanics is not only applicable to aerospace, but also to our mechanical design, considering the comprehensive ability to make our manufacturing more reasonable and accurate, and keep us safe. In this paper, the fluidity of air fluid is analyzed and studied by programming method. By changing different parameters, different flow field distribution diagrams are finally obtained. The research results have reference value for practical engineering applications.

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“…The first method is to get the gradient information of different key parameters on the overall performance while calculating the perfor- mance of different models, and then use some algorithms that can use this gradient information to optimize and improve the shape performance. 15 – 17 The advantage of this method is that with the help of gradient information, the optimization speed is faster, the operation time can be saved, and the optimization cost can be reduced. But at the same time, this method has some limitations and short comings, it is difficult to control the overall situation, and it is easy to become a local optimal optimization.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic performance optimization and experimental verification of underwater glider based on parametric method

Qin

et al. 2022

Science Progress

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In this paper, the wing body fusion method is used to complete the design of underwater glider. On this basis, the traditional optimization algorithm of underwater gliding wing shape is improved. Based on the improved Hicks Henne algorithm and genetic algorithm, the shape optimization of underwater glider is completed. Through the further optimization of the overall performance, the overall shape of the glider is improved and the maximum lift drag ratio is increased. Finally, the physical experiment of the optimized shape is carried out according to the experimental water area of the circulating water tank. Through the comparative analysis of the data, the accuracy of the numerical calculation is verified.

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An iterative procedure for three-dimensional transonic wing design by the integral equation method

Cited by 16 publications

References 1 publication

Hybrid feedback design for subsonic and transonic airfoils and wings

Hybrid feedback design for subsonic and transonic airfoils and wings

The change characteristics of the Mach number used in different spaces on the pressure of the local wing and the subsequent improvement of the aircraft wing

Hydrodynamic performance optimization and experimental verification of underwater glider based on parametric method

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