Wing Loading

[Downwind 1]

What wing loading do you guys shoot for ? And do you count the flat part of the fuselage in that ? I’ve only been counted the wing. So far I’ve found the lighter and slower ones fly easier. That is with no wind.
What your take ?

[matchlessaero]

Downwind, my current Sentinel has a wingloading of right at 2.5ozs per sq foot. I'm going to shoot for 2.4 with my next build.

I don't count anything but the wing (and wings always include ailerons)

F3p is generally only flown inside, so.....

[Aio_1]

Downwind, my current Sentinel has a wingloading of right at 2.5ozs per sq foot. I'm going to shoot for 2.4 with my next build.

I don't count anything but the wing (and wings always include ailerons)

F3p is generally only flown inside, so.....
I'd say the typical range is about 2.3 - 3.3oz/sqft (7 - 10g/sqdm) for monoplanes and maybe 65% of that for biplanes.
Does that sound about right Matchless?

Generally as the plane becomes smaller the wing loading must be lower so if you're building a big F3P plane, say 900mm span, you should get away with a higher loading than if you build a very small plane (say 750mm).
On the topic of wind and turbulence - although designed for indoor flight they can still experience small amounts of turbulence from things like heaters, doorways, or their own wake. I haven't really noticed myself but that's probably because of the low standard of my flying! If I remember correctly Dirk van der Vecht posted that he'd built a very light BlingBling and decided to add ballast because it was too vulnerable to turbulence (I think he mentioned hitting his own wake at the exit from loops).

Aidan

[Downwind 1]

This site has the best information so far. For the serious flyers.
I scratch build most of my planes, And I fly indoors in the winter, out doors in the summer. And I fly just for the fun of it, Most guys at my club think, I’ve gone off the deep end as far as weight goes. The best I can do so far is 3.6 oz /sq. ft. I know I can do better. I read some guy’s are using Micro Rex motors. Dose any one have their site ?

[matchlessaero]

I'd say the typical range is about 2.3 - 3.3oz/sqft (7 - 10g/sqdm) for monoplanes and maybe 65% of that for biplanes.
Does that sound about right Matchless?


I'd say you're right on it Aidan. You're also correct on the Bipes, though different people seem to measure them different ways.


As for turbulence, I have hit it a lot at my indoor location. Bottoms of loops is the primary location I've felt it. Of course, the operator of our indoor location has turned on the air a couple of times while I was flying and nearly blew my bird out of the air....

[Aio_1]

This site has the best information so far. For the serious flyers.
I scratch build most of my planes, And I fly indoors in the winter, out doors in the summer. And I fly just for the fun of it, Most guys at my club think, I’ve gone off the deep end as far as weight goes. The best I can do so far is 3.6 oz /sq. ft. I know I can do better. I read some guy’s are using Micro Rex motors. Dose any one have their site ?
The MicroREX motors are made by flyware. There's lot's of data on their site at www.flyware.de (http://www.flyware.de/)
If you want to go really light you'll be wanting the MicroREX220-3-3200 which is the 11g motor. I've tested one on a 6x3 prop and current draw matched their charts very closely - on 2s Hyperion 300 20C cells it drew between 5.5A and 6A (35W-40W)and hovered a ~150g plane at about 3/4 throttle. You could prop up to a 7x3.5 or possibly larger as the rated burst current draw for the motor is 9.5A.

I've also got a MicroREX220-6-1600 (21g) which I use with a 7x3.5 on 3 cells for about 50W but it could be pushed harder.

There's also some discussion of the 11g motor here (http://www.rcgroups.com/forums/showthread.php?t=592535&page=2#post6386891).

Aidan