Next revolution in pattern planes?

[Xwindflyer at aol.com]

Richard, that could be true, BUT I don belief that. Hanno Prettner and  his 
father Hans did not leave things to happen by luck. If it was not right, he  
would make it right. All great Champion are like that. He has to design that  
like that for a reason
 
Armando 
 
In a message dated 12/31/2004 10:36:57 PM Eastern Standard Time,  
Richard.Fletcher at gs.com writes:

I heard that Prettner felt that he needed  to lower the stab to get it out of 
the wing's wake and did not want to  cut it out and reinstall it so simply 
cut the two halves off and glued them  back on at a downward angle. I built and 
flew Hobby Barn glass fuse, foam  wing Curare back then when I was just 
getting started in Sportsman. I  thought the anhedral stabs looked very cool. I also 
heard that these planes  had tracking problems in crosswinds because the 
stabs presented more side  area to the wind which caused the tail to bounce around 
 more.   
 

Thanks, Rich 





-----Original Message-----
From:  discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On  
Behalf Of Karl G. Mueller
Sent: Friday, December 31, 2004  10:36 PM
To: discussion at nsrca.org
Subject: Re: Next  revolution in pattern planes?


Matt,
 
You were close. The year was 1977 and the location was Springfield,  Ohio.
That was the year a twister went through the competition site the night  
before
and tore down, among other things, one of the tents that was used  to store 
the models in. It was quite a mess, but the contest went ahead as  scheduled.
 
 
Karl G. Mueller
_kgamueller at rogers.com_ (mailto:kgamueller at rogers.com) 


----- Original Message ----- 
From:  _Rcmaster199 at aol.com_ (mailto:Rcmaster199 at aol.com)  
To: _discussion at nsrca.org_ (mailto:discussion at nsrca.org)  
Sent: Friday, December 31, 2004 9:35  PM
Subject: Re: Next revolution in  pattern planes?



Anhedral stabs are affected by crosswind more than flat stabs. At  least for 
the kind of flying we demand. The Prettner Curare design, World  Champ around 
1976 or so, introduced the feature to models. By virtue of  its being World 
Champion model, everybody copied it. Sort of the way fixed  gear took over from 
retracts, except fixed gear have persisted far longer  and serve the intended 
purpose well. 
 
Curares and other anhedral stab designs flew well into the 80's but  
eventually the fad died down. 
 
Naruke san is possibly trying to cure some aerodynamic inadequacy by  
employing the feature again. Or maybe just likes the look. It does look  Kool as 
hell. I doubt that this is a revolution though; more like  evolution....in  reverse






 
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