Youngs Laminar Bodies

Hello everybody,

In his excellent book "Model Aircraft Aerodynamics", Martin Simons mentions a family of so-called laminar bodies, designed by someone named Young. I thought these shapes would be good for keelbulbs, and have searched the web for further information, but to no avail.

If You have any information - relevant URLs, books, papers, anything, please let me know!

Kind regards,
Søren Flening

 

Laminar flow

Laminar flow is enhanced by certain parameters of shape which are pretty well known, mainly maintaining a positive pressure gradient as far aft as possible. However, boat Reynolds numbers are frequently too high to derive significant benefit from laminar flow.

A keel bulb operating in the right flow parameters should probably be as laminar as possible, but it's a pretty simple matter to do so. Horner, Abbot, or many other standard fluid dymanics texts have simple explanations, and VS Aero can do it in a computer.

 

I believe it could be:
A. D. Young. The calculation of total and skin friction drags of
bodies of revolution at zero incidence. ARC R&M No. 1874
(1939).
I havent found it anywhere.

 

Thanks to both of You!
I was wondering, isn't there anyone out there with practical experience with these shapes?

Søren Flening