How much do spoilers increase drag coefficient?

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Discussion Overview

The discussion revolves around estimating the increase in drag coefficient due to the addition of spoilers on aircraft. Participants are exploring the impact of spoilers on aerodynamic drag, particularly in the context of modeling braking systems.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks a rough estimate of the drag coefficient when spoilers are added to an original coefficient of 0.02689.
  • Another participant suggests that spoilers can be approximated as a flat plate for initial estimations.
  • A participant questions the meaning of "outside sources" in the context of research or references used for the estimation.
  • There is a mention of consulting various technical resources, such as books and journals, to inform the modeling process.
  • One participant indicates they are modeling a braking system and requires information on the drag contribution from spoilers to enhance their model.
  • A suggestion is made to refer to Raymer's book for further insights on the topic.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the exact increase in drag coefficient due to spoilers, and multiple viewpoints regarding the modeling approach and resources remain present.

Contextual Notes

The discussion does not clarify specific assumptions regarding the conditions under which the drag coefficient is estimated, nor does it resolve the mathematical steps involved in the modeling process.

Who May Find This Useful

Individuals interested in aerodynamics, aircraft design, and modeling of braking systems may find this discussion relevant.

lukus09
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Approximetly how much is the drag coefficient if orginally the coefficient is 0.02689. I know it depends on aircraft etc but I am only looking a rough estimate.
 
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As a first order guess, spoilers are a flat plate. But, what outside sources have you consulted?
 
Cyrus said:
As a first order guess, spoilers are a flat plate. But, what outside sources have you consulted?

what do you mean by outside sources?
 
Books, AIAA journal papers, NASA technical server, etc. What exactly are you trying to model here?
 
i am modelling the braking system. so i need to know how much drag the spoilers provide to enhance my model
 
Have you tried Raymers book?
 

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