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Old Jun 13, 2013, 01:17 PM
InceCreations
vincent123's Avatar
Joined Jul 2009
732 Posts
Build Log
ZDelta build: flies again!

Hi there,

started with sketching a powered delta plane.
Root chord thickness should be enough to incorporate all gear.

Hand throwing by holding the vertical fin ! :-)
Belly landing, tip skids foreseen.
Anhedral 1,9°

Estimated weight 1,2kg
Power/weight: 1,13
Span 920mm
Sweep 49°
Root 600mm
Tip 80mm
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Last edited by vincent123; Jun 29, 2014 at 12:05 PM. Reason: Plane weight corrected
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Old Jun 13, 2013, 02:10 PM
I don't like your altitude
Stupot46's Avatar
Joined Sep 2011
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Nice! Is that a symetrical foil?
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Old Jun 13, 2013, 03:14 PM
InceCreations
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Joined Jul 2009
732 Posts
Hi Stu,
Yes it is, so ... I'll need some uptrim, but that's ok.

I belive reflexed should be better, but then again, symmetrical makes inverted flight easy ..

Vincent
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Old Jun 22, 2013, 02:03 PM
InceCreations
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Joined Jul 2009
732 Posts
ZDelta buildlog

Detailed the design some more.

Hatch at the bottom, keeping the wing top clean.
This means landing will hit the hatch ....

VT with a plywood center with balsa covering left and right (with crossing grains for strength).

Plywood VT together with the center rib is made from one piece of wood.

Motor cooling via front circular inlet, blowing over the motor cooler ring.
Exhaust behind the ESC, at the bottom of the wing.
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Old Jun 22, 2013, 03:03 PM
Herk
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Virginia USA
Joined Jun 2007
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It seems obvious, but just for the record what is the intended mission or purpose of the design?
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Old Jun 23, 2013, 01:09 AM
InceCreations
vincent123's Avatar
Joined Jul 2009
732 Posts
Quote:
Originally Posted by HerkS View Post
It seems obvious, but just for the record what is the intended mission or purpose of the design?
Having a clean build, easy flyer, both fast and slow
Slow = delta
Fast = motor 2W-25, 1100W, 4cell
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Old Jun 23, 2013, 11:39 AM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
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Quote:
Originally Posted by vincent123 View Post
Hatch at the bottom, keeping the wing top clean.
This means landing will hit the hatch ....
I did this once. It's certainly do-able. Beefed up formers to strengthen the side walls of the pod and a built up plywood hatch worked for me. The hatch had a flat head wood screw at each corner.

Also, a little music wire skid at nose would take all the load off of the hatch.

Kent
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Old Jun 23, 2013, 02:16 PM
InceCreations
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Servo mounted
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Old Jun 23, 2013, 02:50 PM
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iron eagle's Avatar
United States, MA, Middleboro
Joined Jul 2007
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Quote:
Originally Posted by vincent123 View Post
Hi Stu,
Yes it is, so ... I'll need some uptrim, but that's ok.

I belive reflexed should be better, but then again, symmetrical makes inverted flight easy ..

Vincent
No you won't need any up trim, or at least that is what I have found in my experience with full symmetrical wings and bodies, even with a delta/flying wing hybrid.
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Old Jun 24, 2013, 11:11 AM
less is more
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I hope your reflexes are good. The roll rate on this plane at speed will be phenomenal.

Kent
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Old Jun 24, 2013, 11:26 AM
InceCreations
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Joined Jul 2009
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Quote:
Originally Posted by Knoll53 View Post
I hope your reflexes are good. The roll rate on this plane at speed will be phenomenal.

Kent
Yeah, I hope so !
But that's ok: I have ailerons/elevator on the left stick (as evevons), and throttle/ailerons on the right stick.

Left stick ailerons is for normal flying, expo low, right stick aileron is for acro.

Vincent
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Old Jun 27, 2013, 11:56 PM
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Malaysia, Selangor, Kajang
Joined Jun 2009
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I've got a delta with similar design and aspect ratio to yours. But mine is about half your size and weighs in at around 200g.

I set up mine with ailerons scaled back to 70% which makes the roll rate more manageable. You don't really need a dual rate type setup with a delta like this. To increase roll rate and make really tight loops simply increase the throttle. Slowing down will make her docile. I've never found a need for dual rates or expo.

If you're used to flying 3D planes try doing the elevator maneuver with her. In moderate winds you can even make her stop completely in mid air descending slowly like a parachute.

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Old Jun 28, 2013, 01:12 PM
InceCreations
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Joined Jul 2009
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Hi Slebet,

I got a comparable easy flyer, on which the ZDelta is/will be based.

This one, i take out in all wind conditions, even in stormy wheather, it's a rock stable plane !
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Old Sep 11, 2013, 03:59 PM
InceCreations
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Joined Jul 2009
732 Posts
Can I handlaunch it ?

Hi there,

Let me summarize:

Span about 920mm, weight 1,2kg.
Wing loading 12oz/sqft
Static trust 1,5kg

Do you think I can handlaunch it taking it at the vertical stab and launch it below hand?


Vincent
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Old Sep 11, 2013, 04:28 PM
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It depends mostly on how you have it propped (speed vs thrust). If your propped for thrust, no problem other than the one caution that with the small wingspan they often torque hard to the left during the launch. If you prop the plane with a high pitch for speed you can pretty much forget about hand launches.
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