Viscous optimized hypersonic waveriders designed from axisymmetric flow fields

Corda, Stephen; Anderson, J. D.

doi:10.2514/6.1988-369

Cited by 102 publications

(34 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1,5 The MAXWARP code includes an estimate for skin friction in the optimization process, using the reference temperature method. The code also uses a simplex optimization algorithm to optimize shapes for maximum lift-to-drag ratio or minimum drag at the design point.…”

Section: Configuration Designmentioning

confidence: 99%

See 1 more Smart Citation

Interpretation of waverider performance data using computational fluid dynamics

Cockrell

1994

Journal of Aircraft

View full text Add to dashboard Cite

A computational study was conducted to better understand experimental results obtained from wind tunnel tests of a Mach 4 waverider model and a comparative reference configuration. The experimental results showed that the performance of the reference configuration was slightly better than that of the waverider model. These results contradict waverider design theory, which suggests that a waverider optimized for maximum lift-to-drag should provide better performance than any other non-waverider configuration at a given design point, especially at hypersonic speeds. The computational results showed that the predicted surface pressure values and the integrated lift and drag coefficients from the pressure distributions were much lower for the reference model than for the flat-top model, due to the reference model bottom surface having a slight expansion. The lift-to-drag ratios for the flat-top model were higher due to a relatively low drag for the same amount of lift. These results indicate that the performance advantage of the reference model was due to the shape of the bottom surface and not due to the flat top surface. The results also showed that the reference model exhibited the same shock attachment characteristics as the waverider because the planform shapes were identical. CFD predictions show that the planform shape gives the waverider an advantage in performance over conventional hypersonic vehicles and that altering the bottom surface of a waverider does not cause significant performance degradation.

show abstract

Section: Configuration Designmentioning

confidence: 99%

“…The code also uses a simplex optimization algorithm to optimize shapes for maximum lift-to-drag ratio or minimum drag at the design point. 5 In this study, the waverider model was optimized for maximum lift-to-drag ratio at Mach 4.0. This is more appropriate as a hypersonic cruise performance parameter than minimum drag.…”

Section: Configuration Designmentioning

confidence: 99%

Interpretation of waverider performance data using computational fluid dynamics

Cockrell

1994

Journal of Aircraft

View full text Add to dashboard Cite

show abstract

“…With the development of computers and numerical algorithms, the idea of the waverider generation was extended to complicated flowfields by the aid of the computational fluid dynamics (CFD). For example, axisymmetric power-law shapes were investigated as generating bodies by Corda et al [7] to pursue higher L/D waverider forms compared with the cones derived ones.…”

Section: Introductionmentioning

confidence: 99%

Waverider configurations derived from general conical flowfields

2007

View full text Add to dashboard Cite

A method based on the computational fluid dynamics (CFD) is presented for a flexible waverider's design. The generating bodies of this method could be any cones. In addition, either the leading edge or the profile of the scramjet's inlet is used as the waverider's definition curve, parameterized by the quadric function, the sigmoid function or the B-spline function. Furthermore, several numerical examples are carried out to validate the method and the relevant codes. The CFD results of the configurations show that all the designs are successful. Moreover, primary suggestions are proposed for practical design by comparing the geometrical and aerodynamic performances of the conederived waveriders at Mach 6.

show abstract

“…The aerodynamic benefits of waveriders are list in reference [10], and are discussed in detail in references [11] . Many previous works have been shown both computationally [12] and expe rimentally [13] to yield higher LjD ratios at their design point than other hypersonic airframe configurations. In addition, the waverider's LjD ratio has been shown 'computationally to remain highly at off-design hypersonic Mach number [14] .…”

Section: Introductionmentioning

confidence: 99%

Integration property of a wedge-elliptic cone waverider with scramjet engine

Liu

Wang

et al. 2005

Shock Waves

View full text Add to dashboard Cite

Abstract. The hypersonic waverider forebody is designed in this paper. For the present waverider, the undersurface is carved out as a stream surface of a hypersonic inviscid flow field around wedge-elliptic cone, and the upper surface is assumed to be a freest ream surface. A finitevolume code is used to generate the three-dimensional flow field. The leading edge is determined by satisfying the condition that the lip is situated at the intersection line of shocks.

show abstract

Viscous optimized hypersonic waveriders designed from axisymmetric flow fields

Cited by 102 publications

References 6 publications

Interpretation of waverider performance data using computational fluid dynamics

Interpretation of waverider performance data using computational fluid dynamics

Waverider configurations derived from general conical flowfields

Integration property of a wedge-elliptic cone waverider with scramjet engine

Contact Info

Product

Resources

About