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Nos-E: Electric Power for the Highlight DLG

Our airfield (St.Gallen, Switzerland) is unfortunatly not well suited for hand-launched gliders. With winds from west the areas where you can catch a thermal are too high and too far away. No chance to throw my Highlight into this zone.

Recently I bought wonderful 450mAh  LiPos (max. draw 6.75A) and a 22mm CDROM brushless from  AS-Modellbau . An old pusher prop from a Graupner Tipsy (4.7"x2.3") was also still waiting for better times.

After some research in the internet and with a little help from my friends in the RC Line forum (www.rclineforum.de) the list of components looked like this:

Weight of the power system 90g, total weight 380g.

I used the  Hyperion E-Meter to optimize the design.  Here the data of a test run:

messreihe



This is the output of the an ingenious program written by Helmut Schenk und Christian Person (http://www.elektromodellflug.de/datenbank.htm -> Antriebsrechner).

kenndaten



www.standschub.de :

standschub

All calculations indicated enough thrust for a nice climb.
A "hotter" version of this motor is possible (0.4mm wire, 16 W, delta, 17500 U/min, 6.4 A - but this is really hard at the edge of the specs of the batteries and the prop).

All components are integrated into a pylon. The Nos-E does not move the center or gravity and can be removed easily.
The pylon is made from balsa wood, enforced with cevlar rovings.

IMGP2195
IMGP2200
IMGP2202
IMGP2203
IMGP2205
IMGP2207

The plyon is covered with Oracover-Stick.

Conclusion: The Nos-E turns the Highlight DLG into a high-performance electrical glider. Running time of the motor is 5 to 6min - this is enough to fly 20 min without thermal influence ;-)  Even the mountains of Fiss/Tyrol the NosE and the Highlight was a perfect combination.

 

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© 2017 Lucky Luke Records Inc. | Imprint | 11 September 2005
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