Undulating Skin Results In 50% Less Drag

"Bertie the Bunyip" wrote in message
...
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:FuydnYfqHpzOvJDVnZ2dnUVZ_remnZ2d@wideopenwest .com:

"es330td" wrote in message
.
.. ...

Yesterday I was talking about something like this with my CFI and we
discussed the idea of dimpling an airplane like a golf ball. The
upper surfaces of the wings would remain smooth but the fuselage and
undersides of the wing would be dimpled to reduce drag.


There's tape you can get for airplanes as well. It's aplied to the upper
surface of wings, in fact, as well as struts and just about anything else
you care to stick it to, even props.


Bertie

Gee, I think I mentioned turbulator tape. Didn't I...

But of course, some MXwannaboi trimmed off my entire reply. Hmmmmm

Now, can you explain to the class what effect sticking this tape to "just
about anything else you care to stick it to," is going to have on drag?

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:vJSdnYfBN9CF2pDVnZ2dnUVZ_gudnZ2d@wideopenwest .com:

"Bertie the Bunyip" wrote in message
...
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:FuydnYfqHpzOvJDVnZ2dnUVZ_remnZ2d@wideopenwest .com:

"es330td" wrote in message
news:991c8471-6955-4565-890e-167de27c4999
@m36g2000hse.googlegroups.co
m. .. ...

Yesterday I was talking about something like this with my CFI and we
discussed the idea of dimpling an airplane like a golf ball. The
upper surfaces of the wings would remain smooth but the fuselage and
undersides of the wing would be dimpled to reduce drag.


There's tape you can get for airplanes as well. It's aplied to the
upper surface of wings, in fact, as well as struts and just about
anything else you care to stick it to, even props.


Bertie

Gee, I think I mentioned turbulator tape. Didn't I...

Yes, but this stuff is different. it's perforated a-la golf ball as
opposed to the zig zag stuf they use on gliders.

But of course, some MXwannaboi trimmed off my entire reply. Hmmmmm


Oh brother.


Now, can you explain to the class what effect sticking this tape to
"just about anything else you care to stick it to," is going to have
on drag?



Well, the dimples form a very shallow turbulent layer that paadoxically
aids in the adherence of the boundary layer to the surface thus reducing
turbulence and as a result, drag as well.


Happy now or would you like me to call you a name as well?


Bertie

"Bertie the Bunyip" wrote in message
.. .
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:vJSdnYfBN9CF2pDVnZ2dnUVZ_gudnZ2d@wideopenwest .com:

"Bertie the Bunyip" wrote in message
...
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:FuydnYfqHpzOvJDVnZ2dnUVZ_remnZ2d@wideopenwest .com:

"es330td" wrote in message
news:991c8471-6955-4565-890e-167de27c4999
@m36g2000hse.googlegroups.co
m. .. ...

Yesterday I was talking about something like this with my CFI and we
discussed the idea of dimpling an airplane like a golf ball. The
upper surfaces of the wings would remain smooth but the fuselage and
undersides of the wing would be dimpled to reduce drag.


There's tape you can get for airplanes as well. It's aplied to the
upper surface of wings, in fact, as well as struts and just about
anything else you care to stick it to, even props.


Bertie

Gee, I think I mentioned turbulator tape. Didn't I...

Yes, but this stuff is different. it's perforated a-la golf ball as
opposed to the zig zag stuf they use on gliders.

But of course, some MXwannaboi trimmed off my entire reply. Hmmmmm


Oh brother.


Now, can you explain to the class what effect sticking this tape to
"just about anything else you care to stick it to," is going to have
on drag?



Well, the dimples form a very shallow turbulent layer that paadoxically
aids in the adherence of the boundary layer to the surface thus reducing
turbulence and as a result, drag as well.



Totally incorrect, Bertie Buttlick.

"Maxwell" luv2^fly99@cox.^net wrote in news:WSbPj.110302$Ft5.69371
@newsfe15.lga:


"Bertie the Bunyip" wrote in message
.. .
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:vJSdnYfBN9CF2pDVnZ2dnUVZ_gudnZ2d@wideopenwest .com:

"Bertie the Bunyip" wrote in message
...
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:FuydnYfqHpzOvJDVnZ2dnUVZ_remnZ2d@wideopenwest .com:

"es330td" wrote in message
news:991c8471-6955-4565-890e-167de27c4999
@m36g2000hse.googlegroups.co
m. .. ...

Yesterday I was talking about something like this with my CFI and
we
discussed the idea of dimpling an airplane like a golf ball. The
upper surfaces of the wings would remain smooth but the fuselage
and
undersides of the wing would be dimpled to reduce drag.


There's tape you can get for airplanes as well. It's aplied to the
upper surface of wings, in fact, as well as struts and just about
anything else you care to stick it to, even props.


Bertie

Gee, I think I mentioned turbulator tape. Didn't I...

Yes, but this stuff is different. it's perforated a-la golf ball as
opposed to the zig zag stuf they use on gliders.

But of course, some MXwannaboi trimmed off my entire reply. Hmmmmm


Oh brother.


Now, can you explain to the class what effect sticking this tape to
"just about anything else you care to stick it to," is going to
have
on drag?



Well, the dimples form a very shallow turbulent layer that
paadoxically
aids in the adherence of the boundary layer to the surface thus
reducing
turbulence and as a result, drag as well.



Totally incorrect, Bertie Buttlick.


Nope.


Bertie

"Bertie the Bunyip" wrote in message
.. .
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:vJSdnYfBN9CF2pDVnZ2dnUVZ_gudnZ2d@wideopenwest .com:

...
Now, can you explain to the class what effect sticking this tape to
"just about anything else you care to stick it to," is going to have
on drag?



Well, the dimples form a very shallow turbulent layer that paadoxically
aids in the adherence of the boundary layer to the surface thus reducing
turbulence and as a result, drag as well.


So if I stick this on my propeller (or "just about anything else you care
to stick it to," ) I am going to reduce drag?


--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
:

"Bertie the Bunyip" wrote in message
.. .
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote in
news:vJSdnYfBN9CF2pDVnZ2dnUVZ_gudnZ2d@wideopenwest .com:

...
Now, can you explain to the class what effect sticking this tape to
"just about anything else you care to stick it to," is going to
have on drag?



Well, the dimples form a very shallow turbulent layer that
paadoxically aids in the adherence of the boundary layer to the
surface thus reducing turbulence and as a result, drag as well.


So if I stick this on my propeller (or "just about anything else you
care to stick it to," ) I am going to reduce drag?



Apparently. I have an article about it somewhere. the prop installation
was problematic and not STC'd for certified aircraft. It tended to peel,
apparently. They were featured in Sport Aviation a few years ago.


Bertie