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Influences of wind tunnel parameters on airfoil characteristics at high subsonic speeds

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Abstract

The influences of several wind tunnel parameters on airfoil characteristics are experimentally investigated in a transonic wind tunnel. Quantified as Mach number errors they show decisive effects and confirm that they have to be taken into consideration in a valuation of test results. Differences in data gained in measurements of several wind tunnels can be partly explained thereby.

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Abbreviations

C :

chord length

C d :

drag coefficient

C 0 d :

drag coefficient at zero lift

C 1 :

lift coefficient

C 1 max :

lift coefficient at maximum lift

C p :

pressure coefficient

D :

divergence

M :

Mach number

P 0 :

stagnation pressure

Re :

Reynolds number

S h :

suction along the horizontal walls

S v :

suction along the vertical walls

X :

axial coordinate

X ref :

position of the reference point

X s :

shock position

α:

angle of attack

References

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Author notes

  1. H. Scheitle

    Present address: Motoren- und Turbinen-Union München GmbH, Deutsche Aerospace, 50, München, FRG

Authors and Affiliations

  1. Institut für Luftfahrttechnik und Leichtbau, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, W-8014, Neubiberg, FRG

    H. Scheitle & S. Wagner

Authors
  1. H. Scheitle
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  2. S. Wagner
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Scheitle, H., Wagner, S. Influences of wind tunnel parameters on airfoil characteristics at high subsonic speeds. Experiments in Fluids 12, 90–96 (1991). https://doi.org/10.1007/BF00226571

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  • DOI: https://doi.org/10.1007/BF00226571

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