RC India

RC Models => Electric Planes => Topic started by: anwar on December 16, 2009, 11:21:30 PM



Title: A strange rudder plane
Post by: anwar on December 16, 2009, 11:21:30 PM
Found this one lying in a corner at the club.  

I guess it can be yet another source of inspiration for people like Ashta  ;)

Not sure how exactly this is supposed to work, and whether it was scratch built.  It seems to use elevon mixing for aileron and elevator, and a really oversized rudders one above and one below the fuse line.

I can only imagine the type of unusual maneuvers that can be done using such a setup.



Title: Re: A strange rudder plane
Post by: tg on December 17, 2009, 07:49:59 AM
Seen the real one in a museum long back. Search for "Convair XFY". Here is the wiki link http://en.wikipedia.org/wiki/Convair_XFY


Title: Re: A strange rudder plane
Post by: santhosh on December 17, 2009, 09:48:14 AM
looks like this one from greatplanes is same

http://www.electrifly.com/parkflyers/gpma1135.html


Title: Re: A strange rudder plane
Post by: anwar on December 17, 2009, 09:57:08 AM
Yep, looks like the GreatPlanes/Electrifly VFO.

Like I suspected, there are a lot of unique maneuvers that can be done with this.  Gotta get one.  

Was wondering if elevon is enabled across both sets of control sufaces (at 90degrees to one another) ?

http://www.youtube.com/watch?v=bjjvQwMm3Vo


Title: Re: A strange rudder plane
Post by: anwar on December 17, 2009, 10:02:14 AM
Was wondering if elevon is enabled across both sets of control sufaces (at 90degrees to one another) ?

Answered here.

http://www.youtube.com/watch?v=RoY4s0Oeuv8

So they have a elevon + normal rudder mode, and then a elevon + dual aileron/rudder mode (toggled by a switch).  Watch around 1:35 in the above video.


Title: Re: A strange rudder plane
Post by: anwar on December 17, 2009, 10:16:22 AM
While on the subject, this is something not to be missed.

http://www.youtube.com/watch?v=XJ1D_eiHafY


Title: Re: A strange rudder plane
Post by: anwar on December 17, 2009, 10:30:20 AM
Instruction manual : http://manuals.hobbico.com/gpm/gpma1135-manual.pdf

Since it is a nice heli/plane hybrid, could not resist the temptation.  With Towers discount offer, it was irresistable, so ordered couple of them (they are in backorder though!) ;)


Title: Re: A strange rudder plane
Post by: ujjwaana on December 17, 2009, 02:11:15 PM
You are Damn lucky anwar bhai to live in Tax heaven of the Earth! I don't know how many here would dare to order ARF/RTF in India! And hardly any LHS offers the range of ARF/RTF offered by just any tom-dick-and-harry HS in west.  Wish the volume grow in the next 10 years. Till then one has to scratch build such plane.


Title: Re: A strange rudder plane
Post by: tg on December 17, 2009, 02:30:35 PM
But thats the core of aeromodelling - build vs. buy. The more you build the better your planes are.

On another note its interesting that what failed in real life now lives on as a model!!


Title: Re: A strange rudder plane
Post by: anwar on December 17, 2009, 02:32:02 PM
Actually the right thing was to scratch build.  But we are having trouble finding the right type of depron/EPP here.  What we find usually in stores is the art material type, and does not last much.  


Title: Re: A strange rudder plane
Post by: tg on December 17, 2009, 04:57:50 PM
Can our experts post here on how this model would be able to fly, vertical take off and landing isn't difficult to imagine. But how can level flight be established and vice versa.


Title: Re: A strange rudder plane
Post by: anwar on December 17, 2009, 05:15:04 PM
If you look at the shape of the aircraft in http://www.rcindia.org/electric-planes/a-strange-rudder-plane/?action=dlattach;attach=225269 , you can see that except for a rudder hanging below, it looks quite like a normal airplane.  As long as you apply enough elevator from the hover position to place it in a horizontal plane, it works just like an ordinary plane.  This is demonstrated in the "setup" Youtube video also.


Title: Re: A strange rudder plane
Post by: ankur on December 18, 2009, 04:47:06 PM
that means there are two servos for the rudder- right?


Title: Re: A strange rudder plane
Post by: anwar on December 18, 2009, 05:50:06 PM
Yes, there are 4 micro servos, one for each control surface.


Title: Re: A strange rudder plane
Post by: Ashta on December 19, 2009, 04:40:07 PM

Found this one lying in a corner at the club. 

I guess it can be yet another source of inspiration for people like Ashta  ;)

thanks anwar, for remembering me when u come across such creative designs. ;D
surely dig in to this when i am back fro san diego. hoping to meet you in doha on 27th.
best regards
ashta


Title: Re: A strange rudder plane
Post by: santhosh on January 23, 2010, 09:30:42 PM
this is now in stock with tower hobbie

santhosh