Turbulators

[David Gould]

Hi Guys,would anybody have a copy of an article written
by,I think,Dick Johnson in soaring in the USA sometime
in the eighties about the fitting of turbulator tape
to an Astir CS 77.

[Derrick Steed]

Would that be the one about where to fit it on the trailer?

Rgds,

Derrick Steed

[Eric Greenwell]

David Gould wrote:
> Hi Guys,would anybody have a copy of an article written
> by,I think,Dick Johnson in soaring in the USA sometime
> in the eighties about the fitting of turbulator tape
> to an Astir CS 77.

Try searching the on-line index at

http://soaring.aerobatics.ws/Soaring_Index/

It doesn't have the article, but at least people will know what issue
you need. If that's the Speed Astir, I do remember the tape goes on the
top surface.

--
Change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

[Udo Rumpf]

"Eric Greenwell" > wrote in message
...
> David Gould wrote:
>> Hi Guys,would anybody have a copy of an article written
>> by,I think,Dick Johnson in soaring in the USA sometime
>> in the eighties about the fitting of turbulator tape
>> to an Astir CS 77.
>
> Try searching the on-line index at
>
> http://soaring.aerobatics.ws/Soaring_Index/
>
> It doesn't have the article, but at least people will know what issue you
> need. If that's the Speed Astir, I do remember the tape goes on the top
> surface.
>
> --
> Change "netto" to "net" to email me directly
>
> Eric Greenwell
> Washington State
> USA
Eric,
the CS77 has an E 603 airfoil.
D. Althause did find that a turbulator on the bottom improves the climb
somewhat. I have no info for the turbulator placement as per D. Althause.
I did a quick run on the airfoil and it indicates it should be placed at
63%chord.
Regards
Udo

[toad]

David Gould wrote:
> Hi Guys,would anybody have a copy of an article written
> by,I think,Dick Johnson in soaring in the USA sometime
> in the eighties about the fitting of turbulator tape
> to an Astir CS 77.

I have a copy around here somewhere. I got it from Mike Shade at Grob
in Blufton Ohio, his email is

Todd
3S

[[email protected]]

Sorry, I never did get a CS 77 to flight test. I think Mike Shade
should have good info about placing a turbulator on that sailplane.
Dick Johnson

[[email protected]]

I owned an ASTIR CS77 for several years

I can offer you an article from D. Althaus in aerokurier 198? (pdf-file
in German, 200kb, with some pictures.

He says 35% from rear edge for Noppenband.
GROB had written to its customers 63% for Noppenband and 65% for
Zick-Zack from the front. Sorry i lost this letter but i still have the
drawing i made (pdf 8kb) when i placed my turbulator tapes.
Ruediger

[Robin Birch]

In message . com>,
writes
>I owned an ASTIR CS77 for several years
>
>I can offer you an article from D. Althaus in aerokurier 198? (pdf-file
>in German, 200kb, with some pictures.
>
>He says 35% from rear edge for Noppenband.
>GROB had written to its customers 63% for Noppenband and 65% for
>Zick-Zack from the front. Sorry i lost this letter but i still have the
>drawing i made (pdf 8kb) when i placed my turbulator tapes.
>Ruediger
>
Could you send me a copy please

Regards

Robin (A CS77 owner)
--
Robin Birch