Im designing a reverse trike for a project and i want to use swing arm suspensio for the rear single axle. Do i want to keep the arm as short as possible? If it is longer do i need a thicker/bigger/longer/wider spring? I was thinking of actuating it just like on a modern superbike with the...
Hi again,
Im designing a super streamlined ground vehicle and wanted to come up with an initial design geometry based on mathematically defined curves.
I came accross a method in an SAE technical paper which defined the camberline of a car airfoil shape based on the lift coefficent delta Cz...
Ahh i see, yes that would make sense, silly me for listening to F1 pundits. Thats a good idea actually, thanks mattyduk!
I have to say though that it wouldnt work with a closed cockpit car obviously and so the internal drag for a typical car would still increase.
Yes but the hole in front of the formula one car is for cooling the drivers feet basically (well thats what im told), i would very much doubt its for reducing drag, if anything its for some other aerodynamic effect.
I think as greglock says internal flow will increase drag, except in some...
Id be highly suspicious of the results, those guys arnt really experienced in aero testing or anything (i doubt) which is incredibly tricky.
Carbon rod is completely accurate. The Reynolds number is the important factor here. The reynolds number of the ball is much smaller, and in a region of...
"Take the thought experiment to the extreme - a 4" diameter bar, vs. a 4" pipe with 1/8" wall. Which has the lower drag?"
That is a COMPLETELY different scenario, your comparing a blunt body to a streamlined body wihich is ridiculous. You also dont have any figures to substantiate that claim...
For my case i would say incompressible, but what is the effect of compressible flow, i know there are alot of investifations into the shape of air intakes with respect to supersonic flow...
Actually i think the opposite would happen, if you drilled lets say like you said a hold through a bomb shape.
The flow inside the hole (which would be like flow inside a pipe) would create a massive skin friction drag and a turbulent flow inside the pipe. Flow inside pipes typically have a...
But the fact it produces thrust doesnt affect drag? Drag is purely the aerodynamic force, opposite to the direction of motion, the fact that the air contributes to increasing motive force doesnt reduce drag, it just increases the net force in the forward direction. I am 100% certain that a ford...
Yes Fluid Dynamic drag from Hoerner will surely have it in, it has old ww2 aeroplanes in, im pretty sure a zeplin will be in there. Its a fairly old book though.
Since usually a stagnation point would occur on the front of the vehicle nose, if we make a small hole in the nose (for a radiator for example), the stagnation points would move to the area around the hole. How does this affect the total drag.
I know there would be an increase in drag due to...
Hi,
I know how to publish dimensions inside a surface feature (e.g. extrude lim) but how can i publish one inside a sketch?
I want to do this so it makes dimensions inside a sketch easily accesible without going through dozens of tree levels to reach it.
Thanks
Rob
