An old thread but it may be worth for someone:
Sie-3 has Wortmann FX61-184 at all wing length
Best L/D = 34 @ 85km/h
Min. sinkrate = 0,64 @ 78 km/h
Length: only 5,91m (!)
Wing area: 11,84 m2
All-moving tail
Wing loading: 25,8 ... 28,7 kp/m2







2000. február 12., szombat 9:00:00 UTC+1 idÅ‘pontban Wolfgang Mansfeld a következÅ‘t Ã*rta:
Will schrieb:

Thanks for all the info on the SIE-3. If anyone knows if there
is an actual polar available I would be intererested. I have
found out there were only 27 built and production ended in 1974.
It must have been one of the last production sailplanes made of
wood.

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Hi Will,

you can get in contact with Siebert under the eMail address:


If there is a problem with the language, I can help.

Wolfgang