Increasing Wing Surface Area with Pores?

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Discussion Overview

The discussion revolves around the concept of increasing wing surface area through the use of pores or corrugated structures to enhance lift while minimizing induced drag. Participants explore the implications of such designs in the context of aerodynamics and fluid mechanics, touching on principles like Bernoulli's principle and the behavior of airflow over wings.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant suggests that while increasing wing surface area could enhance lift, it may also lead to increased drag due to a larger cross-section disrupting airflow.
  • Another participant clarifies that the pressure beneath the wing is higher, which contributes to lift, but increasing surface area through corrugation or pores may not yield a net gain in lift due to counteracting pressure forces.
  • There are mentions of legitimate uses for corrugated structures on wings related to complex flow physics, rather than simply increasing surface area.
  • Some participants discuss the role of small holes in wings and their potential to increase lift, referencing past discussions and studies on the topic.
  • One participant expresses confusion regarding the relationship between airspeed and pressure differences over the wing, questioning the causal mechanisms involved.
  • Another participant explains that the shape of the wing influences airflow direction, which in turn affects lift, and warns against oversimplified explanations of Bernoulli's principle.
  • There are references to the use of suction at small holes to stabilize the boundary layer and reduce drag, though this does not significantly enhance lift.
  • Discussion includes the potential benefits of streamwise channels or corrugations in delaying turbulence and improving aerodynamic efficiency.

Areas of Agreement / Disagreement

Participants express a range of views on the effectiveness of using pores or corrugated structures to enhance lift without increasing drag. There is no consensus on the validity of these approaches, and the discussion remains unresolved regarding the best methods for optimizing wing design.

Contextual Notes

Participants acknowledge limitations in their understanding and the complexity of aerodynamic principles, particularly concerning the interactions between pressure, airflow, and lift generation. Some statements reflect uncertainty about the implications of various design choices on performance.

  • #31
I should add that this page shows that pressure reduction is created by the fluids inertial resistance to acceleration. This is most easily seen in the centripetal acceleration.
 
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  • #32
it's all about aspect ratio ( size of wings,speed of aircraft)
 

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