Aerodynamic characteristics research on wide-speed range waverider configuration

Wang, Famin; Ding, HaiHe; Lei, MaiFang

doi:10.1007/s11431-009-0258-2

Cited by 36 publications

(4 citation statements)

References 5 publications

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“…2,8 However, the waverider is still far from practical application because of some deficiencies, such as unsatisfactory performances off the design state, inadequate longitudinal stability, and aerothermal risks. Some techniques have been proposed to remedy the deficiencies, such as cascading different waveriders 9 to improve low speed performance, changing the basis flow fields to promote longitudinal stability, 10 and blunting the leading edge to alleviate the aero-heating effect. 11,12 In addition to the above deficiencies, a severe one is inadequate loading volume.…”

Section: Introductionmentioning

confidence: 99%

Effect of upper surface shape on waverider performances

Liu

Tian

Bai

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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Waveriders are of high lift-to-drag (L/D) ratio in hypersonic states; however, low volume of loading limits its application in practical engineering significantly. Raising the upper surface is a method to increase the volume space for waveriders, and this article studies the effect of the upper surface shape on the aerodynamic performances based on a single swept waverider configuration. Cubic polynomials were employed to construct the upper surface to replace the freestream-traced surface, and 2 parameters, the trailing edge thickness and inclination angle of head, were extracted as design variables. Analyzing the flow field using computational fluid dynamics techniques, raising the upper surface only had effect on the aerodynamic performance from the upper surface, but nearly no effect on the lower surface, and thus the design of upper and lower surfaces can be decoupled. As the trailing edge thickness and inclination angle of head increase, the volume of waveriders grows rapidly, while the loss in L/D ratio is limited. Compared with expanding the lower surface, raising the upper surface yielded better aerodynamic performances. The results indicate that raising the upper surface is a feasible and efficient approach to increase the loading volume of the waverider and hence promote its application in engineering.

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Section: Introductionmentioning

confidence: 99%

Effect of upper surface shape on waverider performances

Liu

Tian

Bai

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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show abstract

“…Hypersonic vehicles [1], [2] with high lift-to-drag ratio (L/D) has been pursued for decades. A waverider is a type of hypersonic lift body which characterizes with high L/D [3]- [5].…”

Section: Introductionmentioning

confidence: 99%

Waverider Configuration Design With Variable Shock Angle

et al. 2019

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A novel waverider design methodology is proposed with a variable shock angle based on the osculating cones' theory. The expected shape with special requirements can be generated by arranging the distribution of shock angle using the new method. Contrast investigation is conducted on three waveriders, which are designed with constant, decreasing and increasing shock angle distribution starting from symmetry plane at the average shock angle of 12 •. The feasibility of the proposed approach is validated by the computational fluid dynamics (CFD) simulation. The results show that the distribution of shock angle has a significant influence on the lift-to-drag ratio and volumetric efficiency. Waverider with decreasing shock angle owns the greater volume and volumetric efficiency but with weak aerodynamic performance. The waverider with increasing shock angle has a higher lift-to-drag ratio and enhanced the static stability but with lower volumetric efficiency. The performance of waveriders with variable shock angle under off-design and blunted conditions is also investigated, which reveals a great overall aerodynamic performance and good robustness. INDEX TERMS Hypersonic waverider, variable shock angle, lift-to-drag ratio, off-design condition, bluntness.

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“…Waveriders can also be modified to improve environmental adaptability. Wang et al [39] proposed a novel configuration, which is spliced by two different waveriders. One of the waveriders is designed in hypersonic condition using the osculating cone method while the other is designed in supersonic condition using the cone derived approach.…”

Section: Introductionmentioning

confidence: 99%

Performance comparison between waverider and wide-speed-range gliding vehicle based on CFD approaches

Zhang

Wang

Huang

et al. 2019

Sci. China Technol. Sci.

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Wide-speed-range gliding vehicle (WSRGV) is designed to adapt to the variable cruising environment that hypersonic vehicles will encounter during the mission implementation. Based on the cone-derived theory, a novel design technique of WSRGV has been developed. Theoretically, the functional relationship between cone-derived waverider's volumetric efficiency and its design Mach number can be built through sampling approach as long as the geometries of design conical shock wave and the upper base curve are fixed. Based on the functional relationship, a cone-derived waverider that owns the same volumetric efficiency with a giving WSRGV can be acquired. This paper compared the aerodynamic performance between WSRGV and the cone-derived waverider sharing the same volumetric efficiency in a wide Mach number range. Their aerodynamic properties versus angle of attack have also been compared under the waverider's design Mach number. The obtained result shows that WSRGV shares similar aerodynamic performance with the cone-derived waverider with the same volumetric efficiency. The aero-surfaces in the margin area of this kind of configuration have a larger contribution to the lift-to-drag ratio in comparison with the aero-surfaces in the central area. The configuration with a thick central body and thin margin place owns not only better aerodynamic performance but also better loading property. wide-speed range, cone-derived waverider, volumetric efficiency, lift-to-drag ratio, loading property Citation:Zhang T T, Wang Z G, Huang W, et al. Performance comparison between waverider and wide-speed-range gliding vehicle based on CFD approaches.

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Aerodynamic characteristics research on wide-speed range waverider configuration

Cited by 36 publications

References 5 publications

Effect of upper surface shape on waverider performances

Effect of upper surface shape on waverider performances

Waverider Configuration Design With Variable Shock Angle

Performance comparison between waverider and wide-speed-range gliding vehicle based on CFD approaches

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