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Electric Ducted Fan Jets Discuss electric ducted fan jets here including setup tips, power systems, flying techniques, etc.

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Old 05-16-2006, 06:54 AM   #1
Heiner
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Default Horten Ho-229

Here are some photos of my Ho-229, I bought last winter. Horten 13b.

And some photos of the next, I want to finish soon.

EDF Minifan, 2 x Kontronik FUN 400-36, at 3s1p 3200mA KOKAM.

Heiner


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Old 05-16-2006, 07:15 AM   #2
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Heiner- you are the man!!!

any way to fit retracts or a dolly on the 229?

i was eyeballing one to build this year in fact...where'd you get it?...scratch?

Please let us know more.

Tim
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Old 05-16-2006, 07:23 AM   #3
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Tim,

I bought the Ho-229 from an older RC-pilot, who caught a balsa alergy. He is able to calculate those Hortens at the computer to scale you want. Minifan, Midifan or even turbine. If you build them, according to the plans, they fly very well. If you are interested in drawings I can contact him for you. (I think he speaks no English) . Next winter I want to build a Horten 229 for 2 x 90mm EDF.......

Heiner
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Old 05-16-2006, 07:31 AM   #4
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Hello Heiner,

Please do...im actually wanting to do GWS55s or wemo micros...

i think the GWS fans.

however could go to Alfa Fans.

i am amazed that it flies with no vert stab... what's the secret?...will it roll etc?

(any video?)
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Old 05-16-2006, 06:59 PM   #5
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Looks like the cockpit and fairing is the vertical stabilizers
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Old 05-16-2006, 09:49 PM   #6
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edit: delete redundant post.
My bad for posting, sorry, won't happen again.
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Old 05-16-2006, 09:52 PM   #7
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Nice work Heiner. I almost passed this up, as one of those "what if hypothetical Luft project posts" and then I saw it was you. Slowly the Luft 46 and Luft oddballs are getting more attention. I'm getting back on my contribution to obscure Luft modelling, in about 5 minutes or so. FW189.

After seeing the HE178 on the History Channel's ME262 special, I may just have to get back on that idea again.


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Old 05-17-2006, 06:47 AM   #8
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@ Tim,

what is the diameter of that fans? Then I can calculate the wing span, according to the fan diameters.



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Old 05-17-2006, 06:55 AM   #9
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Hi Heiner,

i think ill go for the alfa gen 2 fans, but want to oversize them wrt the model scale, so please size for 60mm nacelles, but 55mm nacelle reference..

is this ok?

Tim
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Old 05-17-2006, 07:01 AM   #10
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If you want to scale up to 60 mm, why don't go direct for 69mm, Minifan ?


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Old 05-17-2006, 07:14 AM   #11
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too power hungry.

i want to use 3s 1p for each fan...and get at least 6 mins flying.
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Old 05-17-2006, 07:29 AM   #12
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Here is the secret why they fly without vertical fin .....

http://www.nurflugel.com/Nurflugel/Horten_Nurflugels/horten_nurflugels.html

Tim,
if you choose the Het 3W at 3s1p you just draw 20A each in the minifan.
30A each at 4s1p ...........

Wing span, scale to fan diameter:

EDF 60 mm span 1 466 mm = 58 inch
EDF 69 mm span 1 680 mm = 66 inch
EDF 90 mm span 2 200 mm = 86 inch

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Old 05-17-2006, 11:44 PM   #13
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Originally Posted by Heiner View Post
Here is the secret why they fly without vertical fin .....

http://www.nurflugel.com/Nurflugel/Horten_Nurflugels/horten_nurflugels.html

Tim,
if you choose the Het 3W at 3s1p you just draw 20A each in the minifan.
30A each at 4s1p ...........



Heiner
ah yes...i guess my new question is wing loading...

for 20A on the alfa i can get 500g thrust.
20A on the minifan with the het 3w gives 450g thrust...

which is kinda weird me thinks since the diam is so different.

however the alfa at 20A is at 50k rpm where the mini around 27k.

so what is power to weight estimate and wing loading?

am i making this too difficult?if so, let me know and ill just go for the minifan setup.

Cheers,

Tim
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Old 05-18-2006, 06:42 AM   #14
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Tim,

the difference in wing span is just 1466 mm to 1680 mm. For that reason I would suggest you also the Minifan version.(you still can set in the VASA fans)
I will get in contact with the constructor, and ask if I can get also a VASA scaled plan.
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Old 05-19-2006, 06:45 AM   #15
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Here some more photos, I put some more balsa at the upper side of the wing.

And I painted the grey one ......

Heiner


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Old 05-20-2006, 03:17 AM   #16
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Heiner,

Have you seen any planes from these plans fly?

I would love to get a set of plans for the MF480 size as well. Any help you could provide in such an endeavour would be greatly appreciated.

Paul
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Old 05-21-2006, 09:29 PM   #17
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Hi Hainer,

It seems you are fan of the Horten Bros. work , me too

I have here two Wemotec minifans and two microfans waiting for a Ho-IX wing

Jorge
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Old 05-22-2006, 06:48 AM   #18
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Ok,

I got in contact with the design engineer, who made the drawings of my Horten Ho-229 V2 and V3. In a few month they want to bring a CNC-cut small kit to make the building much easier, than to build just by drawing.

I will let you know more in a few days!

Heiner


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Old 05-22-2006, 02:56 PM   #19
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Originally Posted by Heiner View Post
Ok,

I got in contact with the design engineer, who made the drawings of my Horten Ho-229 V2 and V3. In a few month they want to bring a CNC-cut small kit to make the building much easier, than to build just by drawing.

I will let you know more in a few days!

Heiner
Fantastic! She looks beautiful Heiner!

Of course, the next best thing would be an all composite kit

I notice you have the airframe very well jigged. Any chance the CNC cut kit will include the jigs as well?

Paul
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Old 05-22-2006, 03:12 PM   #20
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Paul!

I would say, they have to CNC-cut the jigs also, because you have no chance to build a HORTEN Ho229 without ......
They CNC-cut now a Horten V and they made some extensions at the rips to create the right wing shape.

When I know more, I will let you all know!

heiner
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Old 05-22-2006, 07:42 PM   #21
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Originally Posted by Heiner View Post
Paul!

I would say, they have to CNC-cut the jigs also, because you have no chance to build a HORTEN Ho229 without ......
They CNC-cut now a Horten V and they made some extensions at the rips to create the right wing shape.

When I know more, I will let you all know!

heiner
Great! Thanks Heiner! You've made my day. Ever since reading years ago about Keith Shaw's rendition of the Ho-IX, I have wanted to build one of these. I'm eager to see your's completed and to hear about the flight report.

Paul
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Old 05-23-2006, 06:46 AM   #22
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Paul,

the same design engineer who made the plans for my Ho-229 made the plans for some RC-pilots in Holland for 2x jet turbine. They flew very often in Europe with that jet powered Horten! As soon my Ho-229 is finished and tested I will make a video to post! But first I am on summer holiday in Sweden. I will be back at the end of June.....

Heiner
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Old 05-23-2006, 08:58 AM   #23
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Here a photo of the turbine Ho-229 in Holland.

Heiner


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Old 05-30-2006, 11:35 AM   #24
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Here are some more photos of the turbine covering ......


Heiner


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Old 05-30-2006, 01:05 PM   #25
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I'm in awe. Really nice stuff. Keep the info coming. I haven't done any DF's but I might have to change that. Nice work!
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