FZ3 build: Flying wing with landing gear - Page 3 - RC Groups
Jan 28, 2013, 04:12 PM
You know nothing....
Quote:
 Originally Posted by vincent123 Which holes do you mean, the control wire holes?
That's the ones.
Re the wing loading,I haven't the knowledge to advise on that.If you don't get a response from one of the more experienced guys,try a search on here.
Jan 28, 2013, 09:09 PM
Registered User
Quote:
 Originally Posted by vincent123 Therefore, i need your opinions here: is a flying wing of 13.2 oz/ft3 cubic wing loading and 21 oz/ft2 wing loading, considered as a heavy wing, normal wing or in between ?
What's your wingspan? For any aircraft, my personal rule of thumb is 10g/dm^2 per meter of wing = light. So a 2m sailplane should have a wing loading of 20g/dm^2 while a 10 inch indoor floater should have a wing loading of 2.5g/dm^2 (approx 25cm).

Your wing is roughly 64 g/dm^2 so it's light for a 6.4m wing, medium for a 3m wing and heavy for a 1m wing.
 Jan 29, 2013, 12:17 PM InceCreations It's a 1.1m span, 24dm2 area, 1400-1500 gr depending on finishing method. Last edited by vincent123; Jan 30, 2013 at 02:48 PM.
Feb 04, 2013, 03:46 PM
InceCreations

# FZ3 build: fuselage

Fuselage with retract and motor mount fitted.

Still fiddling with the bay door, not yet satisfied ..., too fragile, need to make it more solid: it will be catching a deal of air..

Door servo not yet in place.

### Images

 Feb 04, 2013, 03:56 PM You know nothing.... Coming together nicely. One point I've picked up while reading on here is the effect the retract will have on the cg.It's going to move it back when deployed,you'll need to work a way round that for take of and landing. Stuart.
 Feb 04, 2013, 04:07 PM InceCreations Yes indeed ! The wheel itself is not heavy, I calculated that when the retract is out (landing) the cog will shift backwards with 5mm: should be acceptable!? Should be also good for taking off: less nose heavy.
Feb 09, 2013, 01:56 PM
InceCreations
Today busy re-making the front gear door thingy.

Connected the 2 hinges for torsional stiffness.

### Images

Feb 10, 2013, 08:14 AM
InceCreations
Finally managed to make a video footage !

 Flying wing with landing gear (0 min 23 sec)
 Feb 10, 2013, 08:38 AM You know nothing.... Nice smooth action!
Feb 10, 2013, 10:55 AM
InceCreations
Quote:
 Originally Posted by Stupot46 Nice smooth action!
I have no clue whatsoever, if the door or wheel and mount is strong enough during flight
First time i'm making this kind of stuff.

Thinking to do maiden with wheel out till landing, then check it all and if all ok, retract it during the next flight
Feb 10, 2013, 12:15 PM
You know nothing....
Quote:
 Originally Posted by vincent123 I have no clue whatsoever, if the door or wheel and mount is strong enough during flight First time i'm making this kind of stuff. Thinking to do maiden with wheel out till landing, then check it all and if all ok, retract it during the next flight
The take off,and particularly landing,are going to put a lot of stress on the gear mounting.
If you haven't already,can you find a way to tie this area into the central spine.
Feb 10, 2013, 02:04 PM
InceCreations
I'ts glued onto the central rib, which is reinfored with 2 metal strips.
Let's hope this is enough

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Feb 17, 2013, 03:37 PM
InceCreations
Hi there,

finished the fuselage today.

Motor and ESC locked in place, both catching a good deal of air for good cooling.

Next step will be the fences, the winglets, painting, ...

Vincent

### Images

 Feb 17, 2013, 03:56 PM You know nothing.... Very nice.Bit of a cliche,but it's a shame to cover that neat woodwork
Feb 24, 2013, 03:20 PM
InceCreations
Fences ready, located at about 1/2 and 2/3 of half wing span.

First one aligned with flap/aileron split.

Fences higher compared to the 2 fences on the FZ3-PT, in order to be sure they have a functional fence effect.

Later some better pictures ...