Design and aerodynamic performance analysis of a variable-sweep-wing morphing waverider

Dai, Pei; Yan, Binbin; Huang, Wei; Zhen, Yifei; Wang, Mingang; Liu, Shuangxi

doi:10.1016/j.ast.2020.105703

Cited by 52 publications

(29 citation statements)

References 21 publications

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“…In this paper, a morphing waverider with a variable sweep wing which was designed in [7] is chosen as the research object. The wing sweep angle can be changed from 20° to 90° smoothly.…”

Section: A Morphing Waverider Descriptionmentioning

confidence: 99%

“…This paper assumes that the transition process between different sweep angles is performed symmetrically on the left and right wing. According to [7], aerodynamic performances of four typical configurations of this morphing waverider were analyzed as shown in Fig. 1.…”

Section: A Morphing Waverider Descriptionmentioning

confidence: 99%

“…The aerodynamic performances of the morphing waverider under five different flight conditions ranging from subsonic, transonic to hypersonic speed fields were analyzed in [7]. To make this paper more complete and easier to understand, the aerodynamic analyses with the increase of angle of attack (i.e.…”

Section: B Aerodynamic Analysismentioning

confidence: 99%

“…The performance advantage and the feasibility of the morphing waverider concept were investigated in [6]. A morphing waverider with variable-sweep-wings was proposed in [7] and its aerodynamic performances was analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the morphing strategy can be acquired by optimization method along the trajectory, and the morphing waverider can have the best aerodynamic performance during the whole flight mission. Motivated by above analyses, the main objective of this paper is to research on the trajectory optimization and morphing strategy of the variable-sweepwing morphing waverider based on previous results in [7], and it is assumed to be accelerated by a booster and then released to perform a wide-speed-range flight.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Morphing Strategy and Trajectory Optimization of a Morphing Waverider and Its Online Implementation Based on the Neural Network

et al. 2021

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In previous studies, a variable-sweep-wing morphing waverider was proposed and its aerodynamic performance and dynamic model were provided. This morphing waverider can change sweep angle according to different flight scenario in order to achieve an optimal flight performance. For the traditional fixed-geometry waverider, the main objective of the trajectory planning problem is to find an optimal trajectory consisting of time-dependent variables including the angle of attack, the velocity, the altitude, the flight path angle and so on. As for this morphing waverider, an optimal morphing wing changing strategy is also required to be calculated together with an optimal trajectory. At first, to alleviate computational cost and improve trajectory-planning efficiency, aerodynamic coefficients of the morphing waverider are approximated and modeled as polynomial functions of multiple variables including the Mach number, the angle of attack and the sweep angle. Thereafter, an offline integrated optimization problem of both wing morphing strategy and trajectory based on the Gauss pseudo-spectral method is investigated, which can fulfill actual task requirements and variable constraints. Compared with four specific fixed-wing waverider configurations, this morphing waverider has a larger downrange distance and a lower angle of attack. However, the real flight trajectory of the morphing waverider may deviate from the nominal condition due to multiple uncertainties and this morphing waverider is required to have an intelligent online optimization ability. Therefore, an online optimization method based on the neural network is proposed for both wing morphing strategy and trajectory optimization. Finally, the overall performance of this method is examined by comparisons and Monte Carlo runs.INDEX TERMS Variable-sweep-wing, morphing waverider, trajectory optimization, morphing strategy, neural network This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.

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“…In this paper, a morphing waverider with a variable sweep wing which was designed in [7] is chosen as the research object. The wing sweep angle can be changed from 20° to 90° smoothly.…”

Section: A Morphing Waverider Descriptionmentioning

confidence: 99%

Section: A Morphing Waverider Descriptionmentioning

confidence: 99%

Section: B Aerodynamic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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