Analytical modeling of circuit aerodynamics in the new NASA Lewis Altitude Wind Tunnel

Towne, Charles E.; Povinelli, Louis A.; Kunik, William G.; Muramoti, K. K.; Hughes, Christopher E.; Levy, R.

doi:10.2514/6.1985-380

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…In addition to traditional feedforward methods, more sophisticated model-based control methods are currently under investigation, aimed to not just facilitate efficient changes between steady-state points, but to control transition of the wind tunnel between these points [13], [14]. The models have also found application in facilitating wind tunnel design efforts [15].…”

Section: Introductionmentioning

confidence: 99%

Model-based stagnation pressure control in a supersonic wind tunnel

Ilić¹,

Miloš²,

Milosavljević³

et al. 2016

FME Transaction

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The flow parameters control in wind tunnels is an area of intense research in recent years, with the aim of improving quality and efficiency of the wind tunnel operation. In this paper, an attempt is made to contribute to a better understanding of the stagnation pressure control in supersonic blowdown-type facilities. The stagnation pressure control strategy in the VTI Belgrade T-38 wind tunnel is discussed. An improved mathematical model for a supersonic wind tunnel is suggested and applied to the T-38 facility. Comparisons of simulation and experimental data are made to demonstrate accurate prediction of the facility response in supersonic flow conditions by the mathematical model. The model is used to incorporate a modified feedforward control in the original T-38 wind tunnel control system. The actual wind tunnel tests confirm model-predicted decrease of flow stabilization time and increase of available measurement time, bringing significant improvement in the wind tunnel operation efficiency.

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Section: Introductionmentioning

confidence: 99%

Model-based stagnation pressure control in a supersonic wind tunnel

Ilić¹,

Miloš²,

Milosavljević³

et al. 2016

FME Transaction

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“…in some case, the codes have been applied directly, but in most cases, at least some modifications were required, A more complete discussion of some of the aspects of the aerothermodynamic analytical modeling effort can be found in Ref. 6. As an example of the kind of results being provided by the analyses, Fig.…”

Section: Analyticalmentioning

confidence: 99%

Analytical and physical modeling program for the NASA Lewis ResearchCenter's Altitude Wind Tunnel (AWT)

Abbott

Diedrich

Groeneweg

et al. 1985

23rd Aerospace Sciences Meeting

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“…4) emphasized potential problem areas or unique features. The major accomplishments of the analytical modeling, wbich was ah extensive effort, have been reported 3 ' and will not be repeated here.…”

Section: Awt Modeling Programmentioning

confidence: 99%

Progress in the Lewis Research Center Altitude Wind Tunnel (AWT) modeling program

Ciepluch

Burley

Groesbeck

et al. 1986

14th Aerodynamic Testing Conference

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The rehabilitation of the AWT at the NASA Lewis Research Center is under study with the goal of providing a modern subsonic wind tunnel for conducting propulsion system/airframe integration, isolated propulsion system, propulsion acoustics and adverse weather tests. Because of the . o increased Mach number capability (from Mach 0.6 to S 0.9 plus) and the incorporation of acoustic and adverse weather capabilities into an existing tunnel, the AWT rehabilitation represents a significant technical challenge. In order to reduce the risk associated with such an undertaking, an extensive AWT modeling program is being conducted to guide and verify the tunnel design. Significant, findings and progress in this modeling program are the subject of this paper.

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Analytical modeling of circuit aerodynamics in the new NASA Lewis Altitude Wind Tunnel

Cited by 6 publications

References 7 publications

Model-based stagnation pressure control in a supersonic wind tunnel

Model-based stagnation pressure control in a supersonic wind tunnel

Analytical and physical modeling program for the NASA Lewis ResearchCenter's Altitude Wind Tunnel (AWT)

Progress in the Lewis Research Center Altitude Wind Tunnel (AWT) modeling program

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