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bogusbandit56
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The Force is growing or should I say the fleet.

Hi CE,
Don`t forget that EDF`s act differently to props, they take a bit of time to spool up and you don`t get the instant punch of a prop.
Try flying them in wide arcs to keep the speed up when you`re ready to fly them.
I would fly them in calm weather first to get the hang of it.
Not that we will be flying for a while yet, at least not until the Beast from the East has died down
Wot, no Depron?
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F1wanabe
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How about a triple edf Mig 29. Two in the nachelles and one on the back . Plus a rear pusher prop for extra instant torque.

How about 2 in the nacelles and one blowing down behind the cockpit . I briefly saw 700g on that scale at max thrust which is about 24 oz. Definitely want minimum 1.5:1 thrust to weight for a fun plane. 2:1 is better!
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Combatevolved
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How about 2 in the nacelles and one blowing down behind the cockpit . I briefly saw 700g on that scale at max thrust which is about 24 oz. Definitely want minimum 1.5:1 thrust to weight for a fun plane. 2:1 is better!

Trying to keep this one simple Greg by using a single high efficiency 64mm. The setup so far is weighing 380g. The central nachelle is retrofittable with a 50mm, 64mm, 70 and possibly an 80mm edf unit. But the party trick is that the side intakes can take a 70mm edf unit each side. So in theory 1, 2 or if one is crazy 3 ducted fans. The wing loading would be ridiculously high with 3 fans (Unless they were aeo 50mm fans at 55g). Does anyone know what a sensible wing load is for these park jets?

I've been using edf fan blast as a form of wind tunnel and aerodynamic testing for my Migs and F16. I essentially hold the tip of the plane with my fingers and place in the air stream of the edf exhaust. While there I move control surfaces and check the lift and c.g. characteristics. It may not be super accurate but it's lots of fun.
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whatmovesyou
Some other suggestions for you are:

1) When you launch the first time, throw it at an angle of 10 to 20 degrees so if thrust/weight is low, plane will not stall out and dive to the ground. 30 degrees is way to much.
2) Pick a day with wind. Reason, you will have built up airflow across the wing so if marginal thrust, you chances are better at a successful flight.
3) You need some thrust when you come in for a landing till you flare it. A way to help you is to go to the throttle curve and put a point in about 10% using expo and put about 15 to 20 % thrust.
Not too many pilots know this so that you don't land and do a go-around, it is spooled up already and could save your bird. Learned that when in service catching a ride in a jet.
I like to design and fly unique planes.
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Combatevolved
Thanks for the advice again chaps.

I had a little test tonight with a single 64mm edf. This plane was initially built for 2 of these fans and it would have been an animal but I'm glad I scaled back my ambition to a single fan to make the setup up simpler as my first attempt.


Im sticking to profile designs until my flying skills improve after which I'll build some of the exotica.
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Combatevolved
I've got plans for a Su37 which would be amazing as a dual 64mm project.
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