Talk:Drag (physics)

Caption required
The image showing relative amounts of form drag and skin friction needs a caption. How do I add one? Thanks. Pieter1963 (talk) 22:10, 21 July 2021 (UTC)


 * I have made it this far. Perhaps you can fine-tune it further. Dolphin ( t ) 14:00, 23 July 2021 (UTC)


 * I couldn't make it work so added separate text. Cheers. Pieter1963 (talk) 22:38, 24 July 2021 (UTC)

Base drag
The article stated "base drag, (aerodynamics) a pressure drag due to flow separation at the base of a projectile[15] or termination of an aircraft fuselage with a flat area, such as is noticeable on the BAE Systems Hawk.". However, according to Doug McLean in "Understanding Aerodynamics: Arguing from the Real Physics" pp 210-211, base drag is not distinct from form drag. "The problem with the term 'base drag,' however, is that it has no defensible definition. Here are three logically possible candidates I know of, along with the reasons why they don't work... So it seems that defining base drag in a rigorous quantitative way is hopeless. And without a workable definition, 'base drag' seems questionable, even just as a concept."

I have removed the offending sentence. cagliost (talk) 10:28, 25 May 2022 (UTC)

Stokes flow drag coefficient unit.
I calculate the unit to be kg/s; please confirm and add to the article. Michael Hodgson (talk) 05:26, 7 June 2022 (UTC)


 * Coefficients of all kinds are, in my experience, dimensionless. The drag coefficient is sometimes described as “dimensionless drag”. Can you explain how you have calculated the drag coefficient to be in units of kg/s? Dolphin ( t ) 10:33, 7 June 2022 (UTC)

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