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Author Topic: Japanese W II RC Models  (Read 34457 times)

Offline Bill Walker

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Re: Japanese W II RC Models
« Reply #30 on: December 02, 2013, 06:52:23 pm »
Blackkite, there are many reasons why an airplane will not takeoff or why an airplane will have a hard landing.  It may not be anything to do with canards, "normal" airplanes sometimes have these problems too.  Different c.g positions may need different pitching power to take off or land softly, so it may be a bad combination of pitching power (ability to raise or lower the nose) and c.g.

The c.g. calculator you show is a little simplified, but a good start.  It seems to assume that both wings have the same CL curve, and the same zero CL angle of attack.  The Shinden, with the slat and double flaps on the canard, can have very different aerodynamic characteristics on the front and rear wings.  The calculations become a bit more complicated then.
Bill Walker

Offline blackkite

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Re: Japanese W II RC Models
« Reply #31 on: December 03, 2013, 12:22:15 am »
Many thanks again! :D

Offline perttime

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Re: Japanese W II RC Models
« Reply #32 on: December 03, 2013, 01:01:50 pm »
From what I've read on R/C forums, canard models can be very sensitive to CG location. They can fly very well but you have to get the setup right.

Offline blackkite

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Re: Japanese W II RC Models
« Reply #33 on: December 03, 2013, 03:15:08 pm »
From what I've read on R/C forums, canard models can be very sensitive to CG location. They can fly very well but you have to get the setup right.
Thanks! Japanese Shinden simplified RC model operator said so.
墜落 means crush. The operator said in this video that when C.G. shifted forward direction, crush. 
« Last Edit: December 03, 2013, 09:07:29 pm by blackkite »

Offline blackkite

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Re: Japanese W II RC Models
« Reply #34 on: December 11, 2013, 03:52:26 am »
Hi!

Offline Jemiba

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Re: Japanese W II RC Models
« Reply #35 on: December 11, 2013, 08:22:33 am »
"Fugaku still attacking !"   ;D
It takes a long time, before all mistakes are made ...

Offline blackkite

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Re: Japanese W II RC Models
« Reply #36 on: December 11, 2013, 05:41:58 pm »

Offline Jemiba

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Re: Japanese W II RC Models
« Reply #37 on: December 12, 2013, 09:38:32 am »
>:(

Sorry for that, was just a joke ! On the positive side, all models participating in that accident
were still with their owners, so they could be repaired. On an RC airshow with foatplanes, I once
witnessed a crash into the water and that model had gone forever, as even a diver couldn't find
the remains of it !
It takes a long time, before all mistakes are made ...

Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #38 on: December 20, 2013, 12:55:52 am »
I'm so glad to be here and see this Huge SHINDEN BUILD!!Congratulation to Mr Josef!!This shinden is impressive!!!Woww!!
I am so happy to be here and can answer about my SHINDEN NO1 and my new Shinden j7w1 THE RETURN.
I will send you some photos with the reason of crush and then my new all glass build about Shinden!
The reason of crush was the deferential of two canard elavators when i put all the move in take of.But also the little heavier front CG!
In canard the more front CG is like a more rear CG in conventional aircraft.
In my new Shinden i build more simple the canard.
Also i will build it all glass from molds ,so i have the chance to make all the test without stress!! ;D ;D
I'm sure that Mr Josefs Shinden will be fly great because he is GREAT BUILDER!!!Tachikawa KI 94 IS IS AWESOME!!

« Last Edit: December 20, 2013, 04:09:43 am by ArgyrisGiannetakis »

Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #39 on: December 20, 2013, 01:42:11 am »
Here is the one reason!!I also discovered when i zoom the photo!

Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #40 on: December 20, 2013, 01:50:44 am »
 :)

Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #41 on: December 20, 2013, 01:52:07 am »
 :)

Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #42 on: December 20, 2013, 02:05:55 am »
My new Shinden j7w1 build the return!
First of all My Youtube Channel with thousand scale RC video!!!
http://www.youtube.com/user/ARGYPILATUS?feature=guide


Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #43 on: December 20, 2013, 02:13:50 am »









Offline ArgyrisGiannetakis

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Re: Japanese W II RC Models
« Reply #44 on: December 20, 2013, 02:17:22 am »