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Old Feb 05, 2003, 11:10 PM
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Building the secret Luftwaffe weapon - Horten Ho 9/229

I posted this already in the jet forum but another reason for building it are for its beautiful scale lines....

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Old Feb 05, 2003, 11:16 PM
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Another....

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Old Feb 06, 2003, 01:29 AM
Happy happy, joy joy!
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Portland, Oregon, USA
Joined Jun 2001
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I have a soft spot for the Horten planes!

I too tried to make a little dual EDF-50 Horten. I tried running it with 8x720 NiMh batts, I think I made it too small as it never seemed to get up on the wing. Couldn't find any photos of it with the two EDF's.

But I did find one with a single. I think I ran it with a two-pack of the Li-ion cells and it kinda flew. Skittery little bugger.

Had great luck with the same airframe and a GWS-A powerplant though, very agile! But hey, AZChuck already did that.

Keep your CG forward!

And good luck, it looks great! More pictures as you go, please...

-TH
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Old Feb 06, 2003, 06:46 AM
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Gaithersburg MD, United States
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The Horton hoIX is also one of my favorite aircraft. I just love flying wings.

I read somewhere that Aeronaut was coming out with a dual edf 72" HoIX. Can anyone verify this?

XPHAm: Are you building from scratch, or are you using someone's plans?

Paul
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Old Feb 06, 2003, 06:04 PM
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Re: I have a soft spot for the Horten planes!

[QUOTE]Originally posted by Goge
[B]I too tried to make a little dual EDF-50 Horten. I tried running it with 8x720 NiMh batts, I think I made it too small as it never seemed to get up on the wing. Couldn't find any photos of it with the two EDF's.

Goge, I am curious as to the size you designed for the twin dual EDF 50; What was your WS (wingspan) and S (Area) of the twin??
Also, do you remember, the airfoil you used? twist? AUW (All up weight) ?

But I did find one with a single. I think I ran it with a two-pack of the Li-ion cells and it kinda flew. Skittery little bugger.

Liked the picture Goge....

Had great luck with the same airframe and a GWS-A powerplant though, very agile! But hey, AZChuck already did that.

Not familiar with GWS-A but will check to see what it is....

Keep your CG forward! (It will be 17% MAC)

And good luck, it looks great! More pictures as you go, please...

Thanks for the comments & I will post more.... as building progresses....

Phil
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Old Feb 06, 2003, 06:12 PM
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Quote:
Originally posted by Tempest
The Horton hoIX is also one of my favorite aircraft. I just love flying wings.

I read somewhere that Aeronaut was coming out with a dual edf 72" HoIX. Can anyone verify this?

XPHAm: Are you building from scratch, or are you using someone's plans?

Paul
I love Nurflugels as well.... The only kit I know possibly coming out is from RBC for twin minifans.... Right now, it seems they have flown the prototype but building a second one....difficult.... I suspect....

Tempest - I am building from scratch from my own plans I drew up a while ago....

Phil
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Old Mar 19, 2003, 11:24 AM
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Power test on the German Mosquito

Some more progress pics.... Those Jumo 004s sound good, I mean the kp-44 ducted fans...

Taking longer than I thought but coming along....

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Old Mar 19, 2003, 07:11 PM
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Southington, Connecticut, United States
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Phil what motors are you useing in the K&P fans? I'm in the process of building Chris Golds Arado 234-C.This jet uses four of the K&P Fans.Did you balance the rotors? Your Ho229 looking good!! stefanP
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Old Mar 19, 2003, 11:26 PM
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Motors for the German Mosquito

Hi Komet44 (StefanP) ,

I actually did some testing of different motors and for the time being decided on the stock motors that came with the fan.... It's funny you mentioned the Arado as that is probably my 2nd favorite aircraft... after the Horten of course...

I chose the stock motors as they seem to give good thrust for the lightest weight, maybe not for longevity though. I have the power system wired up in series and the battery pack is right now 9 x 550maH NiMh (Panasonic).... I believe the discharge rate on these is very similar to the Sanyo 720s NiMh... which I'll be testing soon as well... ideal for this lighter design...

P = 9 x 6 amps ~ 54 watts

P = 10 x 6/7 amps ~ 70 watts

The motors are fine with (9) cells-planning to test (10) soon; So far, I am not finding any problems with overunning them as other have experienced...

I think you'll like the sound, more turbine IMO than hair dryer....

Btw, I did not bother to balance them, as they seem to run smooth out of the BOX...

Cheers,

Phil
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Old Mar 19, 2003, 11:32 PM
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One more thing...

Stefan,

Thanks for the compliments....

Nothing like trying to get working on the world's first turbojet all wing, all wood fighter....

Phil
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Old Mar 20, 2003, 01:10 AM
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Portland, Oregon, USA
Joined Jun 2001
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Phil, Looking good! Keep up the good work.

I like pictures, more pictures...

You're making me want to try building this plane again, shame on you!

-TH
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Old Mar 29, 2003, 09:43 PM
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Try it again !!!

Goge,

You should try it again-too bad you can't find pictures of your twin EDF 50 Horten.... How large did you make it at the time? Wingspan and area would be interesting, AUW??

This project has so far taken a long time, so I hope it will work as designed. If it flies extremely well, I am planning to put some wheels on and ROG like the real one....

With steering of course...

Now if work would let up....

Cheers,

Phil
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Old Mar 30, 2003, 02:01 AM
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United States, VA, Clintwood
Joined Nov 2002
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Nice plane.

Any chance you could scan the plans and email them?
I have been looking for plans for this model for months.
Will pm with address if possible.
Been thinking of making my own plans from 3 views and using ho3d airfoils.
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Old Mar 30, 2003, 02:06 AM
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Portland, Oregon, USA
Joined Jun 2001
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Phil-
Mine was about 30" WS. Remember I used 2 of the GWS EDF50 fans.

I WOULD like to try it again. I think maybe this time I'd use some of the Li-Poly batts to keep weight down.

I think the main problem with mine was trying to make it look scale (the pic I posted isn't fair, it had both of the fans removed... it DID look a little more scale originally). The fans are buried and I had nothing to go on regarding intake lip and exhaust lengths. Probably wasn't running too efficiently. Couple that with heavy batts and only a rough guess on CG... bad combo. In order to really make it look scale it needs to be bigger, those jumos look like they have tiny intakes on the real one.

I even had it drawn up in 3D CAD but I've lost the files somewhere.

The foil was RAF-##, I can't remember the number of it. Big help, huh?

-TH
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Old Apr 01, 2003, 08:26 PM
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Theres a thread on indoor and micro models about kp00 unit ducted fan construction. I think some of the guys got a fan going at around an inch or so with about 20g thrust I am sure there was a 14g thrust one built. Could use something like that and have the intakes around scale size as long as it stayed light weight and used a lipoly. I would say an rffs 100 rx could be used to keep the weight down also along with remote actuators. I am not sure if they have twin motor steering versions of the rffs though.
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