Ho XVIII fernbomber - RC Groups
Thread Tools
Sign up now
to remove ads between posts
Sep 04, 2010, 12:07 PM
Electric Vehicle Enthusiast
Mr.EV's Avatar
Hello, I have been wandering around the forum for a while without posting anything, but this, this is going to be ing awesome, I REALLY am looking forward to how this turns out, but when you do get it done, the one word to describe it will probably be: "Epic".
Good luck!
-Don
Sep 04, 2010, 02:52 PM
Registered User
galognu's Avatar
Are you going to use all ducted fans?

I wish you the best. It will be awesome to see.
Sep 05, 2010, 04:07 AM
Registered User
géry 46's Avatar
yes galognu....

thank don...

But i don't know what type of edf......may be the GWS 64 or all in 40 mm
Last edited by géry 46; Sep 05, 2010 at 05:02 AM.
Sep 05, 2010, 04:51 AM
Registered User
géry 46's Avatar
Equiped with a remote controled turret and periscope...(He 177, Ju 388)...
Sep 05, 2010, 07:30 AM
Disturbed, but in a good way.
RotoGoat's Avatar
Cool....subscribed.
Sep 06, 2010, 11:48 PM
internet gadfly
nmasters's Avatar
subscribed
Sep 08, 2010, 02:55 PM
Registered User
géry 46's Avatar
Exaust and engines cover's design...
Sep 08, 2010, 03:26 PM
Designing something...
Subscribed.
Sep 08, 2010, 03:31 PM
Registered User
géry 46's Avatar
Comparative view of dimentions...between an Ho 229 V2 and the bomber...
Sep 08, 2010, 05:19 PM
Registered User
géry 46's Avatar
Intake design and turbine positioning...
Sep 08, 2010, 05:57 PM
Storm Runner guy
Slider2732's Avatar
OH MY !!!

This might be the thread of choice for some while. Really looking forward to your build progress.
And the problem with 6 mini turbines would be what ? lol, joking
What sort of wingspan are you thinking of ?
Sep 12, 2010, 05:56 AM
Registered User
géry 46's Avatar
remote controled guns turret shema....
Sep 20, 2010, 03:51 PM
Ken Stuhr

Snagged


Gery-I have resisted posting anything on RCG for years now so that I would not get wrapped up in a time-consuming furball, but your project is worth the risk!

Way back, in '97, when I was still heavily into Power Scale Slope machines, I considered the H 18. However, as a slope soarer, it would have been tough to keep the wing loading low and still have a smooth performer. Interestingly, my sizing at the time was identical to yours now--98" span and my estimate of LE sweep at 20 deg was so close to yours at ~19 deg. I presume you were working from the wartime rendering as was I.

Nowadays, I am well into electric, have done several wings, both slope and electric, and will send a few observations. My main concern with my slope version was tip stall. With such a taper ratio, narrow tip chord, and sweepback, this will be an issue! You have included 5 deg washout, I see, which is a good step. Some clever airfoil design at the tip would also help. A final thot is to keep the weight low so that the tip-stalling speed remains below that at which you are liable to fly, mostly.

Seeing your nice renderings/models got me sketching again, at the size above. It makes me curious about the fans you intend. I looked at the Alfa fans at 59mm, but with the likely center section thickness at the outboard engine, I did not think these would fit. After some looking, I am now thinking about the GWS 40mm fans. They have a low current/low Kv model that draws 9A with 5 oz thrust. So 30 ozs thrust total, and if one can keep the weight under 70 ozs total, this is a pretty good T/W. This all means a light airframe, and my conclusion was to omit any landing gear. What do you think?


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Ho XVIII (Horten 18 Amerika Bomber) - Design/Build Thread Cyberman Electric Ducted Fan Jet Talk 59 Aug 01, 2011 08:42 PM
Discussion Ho ho ho merry christmas takeit69 Micro Helis 9 Dec 24, 2009 06:08 PM