Design-Informatics Approach for Intimate Configuration of Silent Supersonic Technology Demonstrator

Chiba, Kazuhisa; Makino, Yoshikazu; Takatoya, Takeshi

doi:10.2514/1.c031116

Cited by 35 publications

(8 citation statements)

References 18 publications

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“…TAS utilizes schemes: Harten-Lax-van Leer-Einfeldt-Wada method [28] for numerical flux computations; lower-upper symmetric Gauss-Seidel implicit method [40] for time integration. Japanese aircraft design has widely employed TAS, such as Mitsubishi SpaceJet [42] and JAXA's Silent Supersonic Technology Demonstrator [4]; we have sophisticated it by contrasting with wind tunnel test results [9].…”

Section: Flow Solvermentioning

confidence: 99%

Aerodynamic efficacy of adding yaw-wise rotational degree of freedom to an airplane flap

Chiba

Komatsu

Ito

2020

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This study scrutinized the aerodynamic change of adding a yaw-wise rotational degree of freedom to a single slotted flap of airplane via computational fluid dynamic analyses. Existing slotted flaps have spanwise constant gaps and are disharmonious with the 3D nature of the flow field. A flap geometry and its angle condition are sensitive to aerodynamic performance; small variations in them must be useful in aerodynamic improvement. To add the yaw-wise rotation to a flap is a lower hurdle than to attain other high-lift systems. Therefore, after defining a simple configuration consisting of a fuselage, a wing, and a single slotted flap, we investigated the mesh dependency to consider the diversity in flow phenomena precisely; we examined the effect of the yaw-wise rotation for the flap on improving the whole lift. To place the flap at suitable yaw-wise rotation angles consequently effected raising the lift. We revealed the physical mechanism that accelerating the fluid in the gap between the wing and the flap changes the separation structure on the flap upper surface and grows the lift.

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Section: Flow Solvermentioning

confidence: 99%

Aerodynamic efficacy of adding yaw-wise rotational degree of freedom to an airplane flap

Chiba

Komatsu

Ito

2020

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“…Thereupon, data mining techniques can be applied to a hypothetical database to acquire not only useful design knowledge but also structurizing and visualizing design space for conception support. This approach was suggested as DI [15]. The goal of this approach is the conception support for designers to materialize innovation.…”

Section: Design Informaticsmentioning

confidence: 99%

Manifestation of Ascendancy of Extinction-Reignition on Sounding Hybrid Rocket Using Design Informatics

Chiba¹,

Kanazaki²,

Shimada³

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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“…Then, data mining techniques can be applied to this hypothetical database in order to acquire not only useful design knowledge but also the structurization and visualization of design space. This approach was suggested as the design informatics [2]. The goal of this approach is the conception support for designers in order to materialize innovation.…”

Section: Introductionmentioning

confidence: 99%

Evolutionary hybrid computation in view of design information by data mining

Chiba

2013

2013 IEEE Congress on Evolutionary Computation

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Design Informatics has three points of view. First point is the effident exploration in design space using evolu tionary computation. Second point is the structurization and visualization of design space using data mining. Third point is the application to practical problems. In the present study, the influence of the seven pure and hybrid optimizers for design information has been investigated in order to explain the selection manner of optimizer for data mining. A single-stage hybrid rocket design problem is picked up as the present design object. As a result, mining result depends on not the number of generation (convergence) but the optimizers (diversity). Consequently, the optimizer with diversity performance should be selected in order to obtain global design information in the design space. Therefore, the diversity performance has also been explained for the seven optimization methods by using three standard mathematical test problems with/without noise. The resuIt indicates that the hybrid method between the differential evolution and the genetic algorithm is benefidal performance for effident exploration in the design space under the condition for large-scale design problems within 102 order evolution at most. Moreover, the comparison among eight crossovers indicates that the prindpal component analysis blended crossover is good selection on the hybrid method between the differential evolution and the genetic algorithm.Index Terms-design informatics, evolutionary hybrid opti mization method, data mining, large-scale practical problem.

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Design-Informatics Approach for Intimate Configuration of Silent Supersonic Technology Demonstrator

Cited by 35 publications

References 18 publications

Aerodynamic efficacy of adding yaw-wise rotational degree of freedom to an airplane flap

Aerodynamic efficacy of adding yaw-wise rotational degree of freedom to an airplane flap

Manifestation of Ascendancy of Extinction-Reignition on Sounding Hybrid Rocket Using Design Informatics

Evolutionary hybrid computation in view of design information by data mining

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