CHK Cumulus "e"
 

After having started out in electric assisted sailplanes with my Multiplex Alpina 4001, I started to look for another e-powered sailplane, which should be more
of a floater, for days with weaker thermal activity, than what the Alpina required..
After some searching around on the web, I found the Cumulus e from CHK in Germany, which here in the U.S. is distribuited by Dieter Mahlein at Shredair.
A "building" report and more pictures can be seen here : CHK Cumulus building
 

Specs :
F3J / F5J Sailplane.
Wing Span :                                                   3400mm   ( 133 in. )
Length :                                                        1630 mm  (   64 in. )
Weight (as “pure” sailplane mfgr.’s figure ) :         1985 g   ( 70 oz. )
My all-up weight with electric drive :                   2720 g   ( 95 oz. )                        
Wing area :                                                    75 dm2          ( 1162 sq.in.)                        
Wing loading :                                                 32.6 g/dm2 ( 11.8 oz/sq.ft. )
Airfoil  :                                                          HN 92-285-935

Controls :
Ailerons
Camber-changing flaps
Elevator
Rudder
Electronic speed control

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