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| Electric Jets Discuss electric jets in Canada. |
Topic Review (Newest First)
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| 03-15-2014 11:23 AM | ||
| dashpuppy |
Re: Mig-25 Foxbat Quote:
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| 03-15-2014 11:20 AM | ||
| sr.odin |
Re: Mig-25 Foxbat Dear John, Sorry, but I have to notice the MiG-25 is not the most successful prototype for scale. The original has a thin airfoil. Therefore the small scale jet with with such airfoil and geometrical proportions will fly as a jet brick. The big model with a thick airfoil will fly as the fan-flay. You will be compelled to select a airfoil and to change geometrical proportions. About EDF. I'm not a fan of long and crooked air labyrinths! This is a guaranteed loss of thrust. For electric aircraft it has crucial importance! Several years ago I wanted to build the MiG-25, but changed his mind and built this. Yak-40 for two EDFs or one turbine |
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| 03-15-2014 10:51 AM | ||
| Dutkoski |
Re: Mig-25 Foxbat Hi Dave, Glad you are liking the build. I've been flying my old prototype while down here in Palm Desert, the chaps quite like it. Not too many EDF's in the group so the few that are getting into it really like like it. |
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| 03-15-2014 10:24 AM | ||
| Dutkoski |
Re: Mig-25 Foxbat Hi Serg, I haven't gotten that far in the design yet, but the airfoil will be more suited to model aircraft. Because it will be a foam wing, having it thicker will help with it's overall strength and rigidity. Wing loading, well as light as possible is the best I can do at the moment. If I have to enlarge the wing to help out then that will be done. The nozzles will be scale in size but the actual thrust tubes will be light weight Fiberglass and will be about 85% to 80% of the fan sweep area. I'm providing the ChangeSun 70 mm V12 EDF units with the kit. I haven't much experience with them and I want to play with the thrust tube diameter to get the best performance. Without a thrust tube, I am getting 930 watts out of one unit on a five cell setup. |
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| 03-13-2014 02:15 PM | ||
| mwavesdave |
Re: Mig-25 Foxbat I agree on the CF-101 VooDoo, never liked it's capability, but it always looked cool. Soon as I finish my Arrow! Great kit by the way, love it. |
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| 03-13-2014 08:45 AM | ||
| sr.odin |
Re: Mig-25 Foxbat 1.By the way, Dutkoski, what airfoil are you going to apply - thin or modernized? Thin airfoils of the original is a major drawback for the model! 2.What a wing loading?  3.Also, I do not like too big nozzles!... 
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| 03-12-2014 07:07 PM | ||
| sr.odin |
Re: Mig-25 Foxbat Quote:
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| 03-12-2014 07:02 PM | ||
| Dutkoski |
Re: Mig-25 Foxbat Hey Alain, I just checked my website, I totally forgot that the page for the foam EDF version did not upload the last time I updated, and since I've been down here in the sun, I have not checked it at all. Anyway, send me an e-mail via the forum here and I'll give you the prices for the three options. Well, back to the pool.....  .
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| 03-12-2014 06:57 PM | ||
| Dutkoski |
Re: Mig-25 Foxbat No, twin 70's is in almost everyone's budget. I will have two 90 mm twins soon enough and they will be composite beasts. And they won't be cheap..... |
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| 03-12-2014 09:50 AM | ||
| Struts1 |
Re: Mig-25 Foxbat John, By looking at the size comparison between the Arrow and Mig 25, Id say Mig will be a winner, if you make it, I'll buy one of ur kits. How about building a twin 90mm version, l bet that will be a rocket and one he'll of a model. |
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