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Snapshot F3B Competitions
Congratulations for Bjorn Tore Hagen to: Author: Michal MichnaUpdate: 4. 10. 11
Author: Michal MichnaUpdate: 4. 10. 11
Congratulations for:
Author: Michal MichnaUpdate: 16. 8. 11
Congratulations for:
Author: Michal MichnaUpdate: 8. 8. 11
We added picture of ballast for wing and new ballast for wing joiner. New improved RDS was develop. Servo frame is now with balls bearing for better accuracy and simpliest mounting. Ballast for joiner was also added to jitom calculator. Author: Michal MichnaUpdate: 1. 8. 11
Author: Michal MichnaUpdate: 27. 6. 11
Congratulations for:
Author: Michal MichnaUpdate: 21. 6. 11
Congratulations for:
Author: Michal MichnaUpdate: 15. 5. 11
Congratulations for Günter Aichholzer (5 place), Stefan Sporer (14 place), Jiri Tuma (20 place) and Heinz Lüthi (33. place) all flying with Extasy in 17. Salzburger F3B Wanderpokal 2011 in Austria. Competition has been occurring from 2. to 3. April 2011 and it was great introduction for Extasy to new season. Günter Aichholzer fly with Extasy speed task in 14,93 second. We also congratulation Jiri Tuma (FUSO team) for the third position in teams. Show results in PDF from competition
Author: Michal MichnaUpdate: 18. 4. 11 We have calculated the performance of the Evolution V-Tail model using the XFoil program. We hope that this knowledge will allow better settings for your model and will contribute to improving the properties for a new model. We plan to compare the calculated results with the actual parameters of the model using a barometric altimeter and GPS logger as soon as possible. So far, however, the results appear to be remarkably accurate (for example minimum sink rate).
Results were calculated for a model weight from 2200 grams to 3400 grams
with 400 grams resolution. It appears that for distance and speed task, more
weight means a better outcome. The graphs also show the maximum glide ratio
and maximum flight efficiency. For distance task it is good to move between
the maximum of these variables. For Evolution model the trim speed is almost
the same as the speed for maximum glide ratio. All calculations are for a
model with control surfaces (v-tail, elevator, ailerons, flaps) in neutral
position.
Later we compute also optimum flaps angle for achieve maximum lift for
start on winch and appropiate elevator correction. Author: Michal MichnaUpdate: 20. 11. 09
Jiri Tuma training flights, altitude logs - 10.6.2009
Maximum is 343 meters! Average cca 300 meters. Wind aprox. 2-4 m/s. Author: Michal MichnaUpdate: 14. 6. 09 JITOM offer new tool for custom color desing. You may configure any color combination you want in four diferent views. Online in you browser, instalation is not require. It's simple, just try...
Evolution V-tail desinger ![]() Author: Michal MichnaUpdate: 10. 6. 09 |
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