Clark Y information

[[email protected]]

Hello,

I need some information about Clark Y profiles. I found a lot of
information like coordinates, but I really need design parameters.
Like design lift coefficient, nose radius and trailing edge radius.
I would really appreciate your help!

Bart

[cavelamb himself[_4_]]

wrote:
> Hello,
>
> I need some information about Clark Y profiles. I found a lot of
> information like coordinates, but I really need design parameters.
> Like design lift coefficient, nose radius and trailing edge radius.
> I would really appreciate your help!
>
> Bart

Just for you, Bart.

At the bottom of the page.
http://www.home.earthlink.net/~cavelamb/parasol.htm

you do know how to read it, right?

Richard
--
(remove the X to email)

It's never too late to be the person you might have been.
George Elliot

[Stealth Pilot[_2_]]

On Wed, 26 Mar 2008 06:24:01 -0700 (PDT), wrote:

>Hello,
>
>I need some information about Clark Y profiles. I found a lot of
>information like coordinates, but I really need design parameters.
>Like design lift coefficient, nose radius and trailing edge radius.
>I would really appreciate your help!
>
>Bart

the clark Y aerofoil is 17% thick and has it's ordinates set out from
the bottom surface.

the NACA 4417 aerofoil is the clark Y with the ordinates set out from
the chord line.
Theory of Wing Sections, Abbott and Von Doenhoff has the info on the
4418 (1% thicker) on page 492 and 493. that should be close enough if
you compare the 4415 on the previous pages.

if you search the naca.larc.nasa.gov website search engine there are
naca technical reports on the aerodynamics of the clark Y.

the shape was an educated guess based on a number of previous good
aerofoils. justinius clark had a reasonably good eye for these things.

Stealth Pilot

[Philippe Vessaire]

wrote:


> I need some information about Clark Y profiles. I found a lot of
> information like coordinates, but I really need design parameters.
> Like design lift coefficient, nose radius and trailing edge radius.
> I would really appreciate your help!

Google : "airfoil data"
next
Google : Xfoil

and you will be happy.

--
Volem rien foutre al païs!
Philippe Vessaire Ò¿Ó¬

[[email protected]]

Thank you all very much for the info. Your comments are very helpful!

Bart

On Mar 27, 9:25 am, Philippe Vessaire > wrote:
> wrote:
> > I need some information about Clark Y profiles. I found a lot of
> > information like coordinates, but I really need design parameters.
> > Like design lift coefficient, nose radius and trailing edge radius.
> > I would really appreciate your help!
>
> Google : "airfoil data"
> next
> Google : Xfoil
>
> and you will be happy.
>
> --
> Volem rien foutre al païs!
> Philippe Vessaire Ò¿Ó¬

[cavelamb himself[_4_]]

wrote:
> Thank you all very much for the info. Your comments are very helpful!
>
> Bart
>
> On Mar 27, 9:25 am, Philippe Vessaire > wrote:
>
wrote:
>>
>>>I need some information about Clark Y profiles. I found a lot of
>>>information like coordinates, but I really need design parameters.
>>>Like design lift coefficient, nose radius and trailing edge radius.
>>>I would really appreciate your help!
>>
>>Google : "airfoil data"
>>next
>>Google : Xfoil
>>
>>and you will be happy.
>>
>>--
>>Volem rien foutre al païs!
>> Philippe Vessaire Ò¿Ó¬
>
>


Did you get the chart?


--
(remove the X to email)

It's never too late to be the person you might have been.
George Elliot

[[email protected]]

I did get the chart, thanks!
To get the data I need, I assumed a NACA 4412 airfoil, as Stealth
Pilot suggested. More information about NACA 4412 is available in
textbooks, and because I have very low Reynolds numbers, I have to
extrapolate or assume a lot of things. Therefore, the difference in
thickness and camber isn't a real problem.
Thank you all for your advice and time!

Bart

On Mar 27, 3:03 pm, cavelamb himself > wrote:
> wrote:
> > Thank you all very much for the info. Your comments are very helpful!
>
> > Bart
>
> > On Mar 27, 9:25 am, Philippe Vessaire > wrote:
>
> wrote:
>
> >>>I need some information about Clark Y profiles. I found a lot of
> >>>information like coordinates, but I really need design parameters.
> >>>Like design lift coefficient, nose radius and trailing edge radius.
> >>>I would really appreciate your help!
>
> >>Google : "airfoil data"
> >>next
> >>Google : Xfoil
>
> >>and you will be happy.
>
> >>--
> >>Volem rien foutre al païs!
> >> Philippe Vessaire Ò¿Ó¬
>
> Did you get the chart?
>
> --
> (remove the X to email)
>
> It's never too late to be the person you might have been.
> George Elliot