Re: [RCSE] Tail volume coefficient....

[Jon Stone]

Paul,

I've been researching this area a lot lately.  These are the best articles 
on the topic I know of.  Together, they answer all of your questions.

http://www.charlesriverrc.org/articles/design/markdrela_vtailsizing.htm

http://www.rcgroups.com/forums/showthread.php?s=&postid=865833&highlight=volume+tail#post865833

Regards,

Jon

At 05:53 AM 6/3/2003 -0700, Paul Breed wrote:
A few years ago, someone gave me a real clear answer on how to size the 
tail on
a RES floater type plane with dihedral.

I believe that the calculations were titled tail volume coefficient....

It went something like:

Vertical Stabilizer+Rudder area * moment arm (from CG ?) / (wing area* 
span????) == some range....

Same basic formula for Horizontal stabilizer and elevator only it did not 
account for span.... just wing area....

There were subtle differences between the two formulas....

Could someone please re-enlighten me?

Specifically I'd like to know:
        Formula for Horizontal Stabilizer coefficient.
        Formula to Vertical stabilizer coefficent.
        Reasonable range(s) for a slow floater type aircraft.

Thanks in advance.

Paul







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