Beyond The Sprues

Modelling => Ideas & Inspiration => Aero-space => Topic started by: The Big Gimper on January 25, 2015, 02:02:16 AM

Title: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: The Big Gimper on January 25, 2015, 02:02:16 AM
Physical Modifications:

Ju 290 with a single tail like the Ju 252 or He 177
Ju 290 with tricycle gear via longer nose. Need to figure where is the C of G is?
Jet pods on wings aka KC-97
Turbo Props

Roles:
Early AEW like the Shackleton or EC-121.
Airborne Controller similar to AWACS

Images:

(http://www.airwar1946.nl/whif/images/ju290_01.jpg)

(http://1000aircraftphotos.com/Contributions/Braas/11502.jpg)

(http://animationstudiotoronto.com/wp-content/uploads/2013/01/Ju390_1.jpg)
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: Silver Fox on January 25, 2015, 05:17:08 AM
As a rough estimate you can 1/3 of the wing chord or the thickest point on the wing as CofG location.
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: elmayerle on January 25, 2015, 05:42:47 AM
You'd probably have to move the wing aft or extend the nose to get a good cg for a tricycle gear (cg has to be a bit, but not too much, behind where the wing quarter-chord line intersects the aircraft centerline).
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: Rickshaw on January 25, 2015, 11:01:58 AM
Images:

([url]http://1000aircraftphotos.com/Contributions/Braas/11502.jpg[/url])


I think you'll find that is a Ju252 or 352, not a 290...
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: GTX_Admin on January 26, 2015, 02:19:32 AM

I think you'll find that is a Ju252 or 352, not a 290...

And as he said in his post, he was looking at a "Ju 290 with a single tail like the Ju 252 or He 177".  I am sure the photo included was for illustrative purposes.
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: jcf on January 26, 2015, 04:46:23 AM
Except of course that the model in the photo is a Ju 290 as it would have appeared as an airliner,
which as it happens was the original intent of the derivation from the Ju 90.
 ;D
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: GTX_Admin on January 26, 2015, 04:52:57 AM
Except of course that the model in the photo is a Ju 290 as it would have appeared as an airliner,


Much more attractive IMHO
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: jcf on January 26, 2015, 04:59:10 AM
Except of course that the model in the photo is a Ju 290 as it would have appeared as an airliner,


Much more attractive IMHO

Ditto.  :)
Title: Re: Junkers Ju 252, Ju 290, and Ju 390... Ideas and Inspiration
Post by: Rickshaw on January 26, 2015, 08:11:34 PM
Except of course that the model in the photo is a Ju 290 as it would have appeared as an airliner,
which as it happens was the original intent of the derivation from the Ju 90.
 ;D

Yes, I chose the wrong picture from the medley.  Now corrected.