Espritmodel.com Telemetry Radio
Reply
Thread Tools
Old Oct 13, 2012, 02:29 PM
Herk
HerkS's Avatar
Virginia USA
Joined Jun 2007
1,636 Posts
Your thinking sounds good to me. Hope you try it. - Herk
HerkS is online now Find More Posts by HerkS
Reply With Quote
Sign up now
to remove ads between posts
Old Oct 17, 2012, 03:42 AM
Registered User
miniphase's Avatar
Kent, UK
Joined Nov 2004
856 Posts
Kent, I don't know what you're worried about ......
miniphase is offline Find More Posts by miniphase
Reply With Quote
Old Oct 17, 2012, 05:50 AM
I don't like your altitude
Stupot46's Avatar
Joined Sep 2011
3,199 Posts
Wow! I can only see two control surfaces?
I presume the red tips are a "danger keep clear" warning-or could they have a more sinister meaning-------
Regards Stuart.
Stupot46 is offline Find More Posts by Stupot46
Reply With Quote
Old Oct 18, 2012, 09:06 AM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
Quote:
Originally Posted by miniphase View Post
Kent, I don't know what you're worried about ......
This must be a joke....

An ultra skinny high aspect ratio Horten such as this would be, IMHO, problematic. You just don't see many examples of skinny Hortens.

Is this the one that flew once, went wildly out of control and end up in heap of splinters?

Kent
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Latest blog entry: Nosey
Reply With Quote
Old Oct 18, 2012, 01:04 PM
Registered User
miniphase's Avatar
Kent, UK
Joined Nov 2004
856 Posts
Quote:
Originally Posted by Knoll53 View Post
This must be a joke....

An ultra skinny high aspect ratio Horten such as this would be, IMHO, problematic. You just don't see many examples of skinny Hortens.

Is this the one that flew once, went wildly out of control and end up in heap of splinters?

Kent
It's one of Alfons Gabsch' Hortens. I've seen photos of it from several events over the years so can only assume that it does fly with some level of success. My guess is that a bit of motive power makes the thing more manageable, but I'd be interested to know how the most outboard sections of the wing are constructed.

Here's another picture I came across a few years back of of the same model (far left) and a similar model of his here- http://www.inter-ex.com/english/interex24/bild401.htm
miniphase is offline Find More Posts by miniphase
Last edited by miniphase; Oct 18, 2012 at 01:09 PM. Reason: link added
Reply With Quote
Old Oct 18, 2012, 02:56 PM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
Some how it looks even skinner in the link. If anyone can build and fly such a ship, Alfons is the one. Did a quick search and could find no additional useful info...... Would like to see a video of this one in flight, especially without power at a high AoA.

Compared to tailed planes, each one of my 4 Horten style wings requires special piloting skill to get them around the block in one piece. Alfons's skinny wing must be a real treat.

Thanks for background info. Paul. If anyone has more info. on this skinny wing, please post it here.

Thanks,
Kent
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Latest blog entry: Nosey
Reply With Quote
Old Oct 20, 2012, 03:18 PM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
Doodling
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Latest blog entry: Nosey
Reply With Quote
Old Oct 20, 2012, 05:25 PM
I don't like your altitude
Stupot46's Avatar
Joined Sep 2011
3,199 Posts
Great shape!Hope this gets off the drawing board.
Stuart
Stupot46 is offline Find More Posts by Stupot46
Reply With Quote
Old Oct 20, 2012, 07:10 PM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
The next step is to generate a bird-like fuse.

Here's fuse #1
The tail is about 10% of the wing area. Probably too small for a thermal ship. This tail needs something....not sure what.
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Latest blog entry: Nosey
Reply With Quote
Old Oct 20, 2012, 10:48 PM
skumgummi dave
Gresham, OR.
Joined Mar 2004
1,788 Posts
That looks ZESTY!

Dave-
foamdave is online now Find More Posts by foamdave
Reply With Quote
Old Oct 21, 2012, 11:48 AM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
Here's a CG check at 2 different wing sweep configurations. Quick work in Rhino 3D.

Version 2 will have a shorter nose and a longer tail, which looks better at the moment.
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Last edited by Knoll53; Oct 21, 2012 at 12:01 PM.
Reply With Quote
Old Oct 21, 2012, 12:54 PM
I don't like your altitude
Stupot46's Avatar
Joined Sep 2011
3,199 Posts
Q from the class- would V2 be a more stable planform- looks slightly more swept?
Stuart
Stupot46 is offline Find More Posts by Stupot46
Reply With Quote
Old Oct 21, 2012, 01:10 PM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
If you are suggesting that a swept wing with it's deeper effective chord (from tip of LE to rear point of the TE) will be more pitch stable than a straight plank, then I agree.

Straight Planks are famous for being "twitchy" in pitch and having a tiny workable CG range. I used to adjust the CG in my Alula by adding or subtracting one gram at the nose, which was 3 small lead shots. Not really attractive for a sport plane.

Increased sweep can create other problems, such as spanwise flow. Who knows, maybe that would promote tip stalls.

Only one way to find out....
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Latest blog entry: Nosey
Reply With Quote
Old Oct 21, 2012, 02:58 PM
Hallo von Dresden
Joined Sep 2012
55 Posts
Mmmmm, maybe it will flap its wings as well?? No seriously, nice work Kent, it looks like it will be a very unusual bird to say the least. With the right paint job you can scare the §§§§ out of the seagulls.

Jens
Segelflieger is offline Find More Posts by Segelflieger
Reply With Quote
Old Oct 21, 2012, 03:31 PM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,780 Posts
Quote:
Originally Posted by Segelflieger View Post
With the right paint job you can scare the §§§§ out of the seagulls.

Jens
Golly
I was hoping to make friends with the seagulls.

We'll see.... The seagulls scatter when they see the Horten IX-V1.
Knoll53 is online now Find More Posts by Knoll53
RCG Plus Member
Latest blog entry: Nosey
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion [Winged Planet] Stunning bird and from-bird video footage ! [BBC] alainphoto Aerial Photography 3 Oct 21, 2012 12:12 AM
Help! Building curvy fuselages? adamtc Vintage & Old-Timer Designs 48 Feb 26, 2008 04:03 PM
Sold 15-turn 24-gauge 22.7mm CDROM w/Curvies $15 Shipped timocharis Aircraft - Electric - Power Systems (FS/W) 2 Feb 28, 2007 09:55 PM
Discussion Curvy Covering Monokote vdubin64 Fuel Plane Talk 5 Dec 18, 2006 02:04 AM
Question Curvy surfaces, and blended systems. Wing Zero Modeling Science 6 Dec 26, 2005 02:34 PM