Register to reply 
Profile Drag and Pressure Drag? 
Share this thread: 
#1
Jun710, 09:18 AM

P: 42

Can someone please tell me the difference between profile drag and pressure drag if there is one??.



#2
Jun710, 09:32 AM

P: 4,780

Try Google, this is very basic. If you don't get stuck there, repost here and I'll help you.



#3
Jun710, 09:53 AM

P: 42

I tried but they are telling me that profile drag is skin friction and pressure drag...the thing is i read the following line in raymer
' For many aerodynamic calculations, it has been traditional to separate the airfoil into its thickness distribution and zero thickness camber line. The former provides the major influence on the profile drag, while the latter provides the major influence on lift and induced drag' The thing if pressure drag is part of profile drag and since it is due to separation, shouldnt thickness distribution also change lift, since if pressure drag changes, pressure distribution changes and hence lift changes. Someone told me that profile drag is due to frontal area only, the stagnation part. Is this true???. Thanks. 


#4
Jun710, 11:12 AM

P: 43

Profile Drag and Pressure Drag?
So then the two are used as Raymer says airfoil thickness distribution provides the data for thickness and viscous effects complimented with thin airfoil theory for lift and induced drag absent of thickness & viscous effects. 


#5
Jun710, 11:46 AM

P: 3

The airfoil is separated into thickness distribution and camber. This thickness distribution, then would be symmetrical abd wont have any effect on lift (atleast not much significant effect). 


#6
Jun710, 01:08 PM

P: 42

Thats true, but what is profile drag. Is it pressure drag, skin friction drag, or drag due to frontal area??



#7
Jun710, 01:27 PM

P: 43




#9
Jun710, 01:49 PM

P: 43




#10
Jun1310, 03:55 AM

P: 4,513




Register to reply 
Related Discussions  
Lift and Drag from Pressure Distribution over an Air Foil  General Physics  2  
Air Drag  Introductory Physics Homework  2  
Lift and Drag coefficient equation in terms of pressure  Mechanical Engineering  3  
Fluid Mechanics  Drag coefficient and Pressure coefficient  Mechanical Engineering  1  
Pressure (form) drag  Mechanical Engineering  4 