Talk:Parasitic drag

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Drag vs parasitic drag

How is this different from drag (physics)? Is it aviation specific? Fresheneesz 07:25, 30 May 2006 (UTC)[reply]

Basically—this article has an aerodynamic focus. Axda0002 15:22, 19 June 2006 (UTC)[reply]

men in Drag

what about flow seperation? and how ths is created by viscosity which results in form drag? form drag would not come about were it not for viscosity, also there is no mention of lamina and terbulent flows and the lamina turbulent transition and reynolds number. and what exactly is intrference drag? is it the adverse efect of two bodies being close to each other resulting in greater drag than the sum of the parts? previously unsigned comment by 132.244.246.25

interference drag is defined in the article, it comes about because of vortecies in the air (I don't know what "two bodies" you're refering to). I'm not very familiar with this subject tho, but I'm sure if you ask your questions more clearly, they'd be more likely to be answered. Fresheneesz 06:50, 10 September 2006 (UTC)[reply]

error in diagram

contains a significant error. The two components of total drag, Induced and Form, tend to zero at (respectively) infinite and zero airspeed. Consequently total drag asymptotically approaches Form Drag at high airspeed, and this is correctly shown. However conversely total drag should approach Induced Drag at zero airspeed and this is not shown. In fact at zero airspeed, total drag is shown as exceeding Induced Drag by almost as much as it does at the optimum glide ratio, even though form drag is zero. -- 202.63.39.58 (talk) 23:50, 5 March 2010 (UTC)[reply]

Confusing introduction

I'm confused by the introduction of the article, which says that Parasitic drag (also called skin friction drag) and then goes on to say that Skin friction and interference drag are also major components of parasitic drag. This leaves me confused as to whether parasitic drag and skin friction drag are synonyms (implied by the first sentence), or whether skin friction drag is merely a component of parasitic drag. It may be that both of these are the case, but if so it would be helpful if the article stated this clearly; I hope that someone more knowledgeable in this subject sees this and can edit the article. 84.51.131.203 (talk) —Preceding undated comment added 15:51, 18 March 2011 (UTC).[reply]

The main graphic is wrong and it should be removed. The total drag is a combination of the "parasitic drag" and the induced drag.--Abuk SABUK (talk) 22:13, 23 October 2012 (UTC)[reply]

Profile drag

The definition of profile drag previously used seems to be incorrect, or at least unusual. I have updated it to define it as the sum of form drag and skin friction. This is the definition found in the dictionary sources I have checked and also in many aerodynamics texts.

However, I have come across its use as a synonym for form drag (eg in this article before my changes), so I have added a note to indicate that this definition is also seen.

If anyone with deeper knowledge feels that this latter use is just plain wrong then they might like to edit the article to indicate that such usage is an error. I feel that the article should still mention its use as a synonym for form drag, even if it then states that this use is incorrect.Jontyla (talk) 19:15, 23 January 2013 (UTC)[reply]