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No Swashplate Technology - 3/1/2004 7:06:03 PM   
zeevro


 

Posts: 81
Joined: 12/28/2003
From: Kfar Saba, ISRAEL
Status: offline 		Hey,

I want to build a micro heli w/ out a swashplate but i can't find any informaition about this technology.

Can antone help me?

Thanks in advance.
       Post #: 1

RE: No Swashplate Technology - 3/1/2004 7:54:07 PM   
dragon-dude



Posts: 153
Joined: 1/10/2004
From: Columbia Heights, MN, USA
Status: offline 		Geez...dunno how you'd go about a heli w/o a swashplate and is controllable in all directions.

Perhaps you could use a ball mod that is available for micro swashplates and some how use a tap to keep the ball in place and have the entire main shaft swingable.

This means that you have to have the enitre main motor/gear assembly mounted to one peice that can swivel with the main shaft. The servos would be mounted on the chassis and move the main motor/gear/shaft assembly...

Yikes...keep us informed if you invent a new way of changing the angle of heli blades w/o a swash...

(in reply to zeevro)
       Post #: 2

RE: No Swashplate Technology - 3/2/2004 12:25:59 AM   
bluesilver30


 

Posts: 90
Joined: 11/28/2003
From: Rumson, NJ, USA
Status: offline 		what's the point?

_____________________________

Man's flight through life is sustained by the power of his knowledge.

(in reply to dragon-dude)
       Post #: 3

RE: No Swashplate Technology - 3/2/2004 1:44:53 AM   
helisfreak



Posts: 363
Joined: 2/16/2004
From: phx85281, USA
Status: offline 		The point is.. to make look more crazy then it need to be.. lol..

Helicopter with out a swashplate... i would suggest build something like the dragonfly... lol.. 4 motor... no swash plate...

I was thiking to build one the other day.. using 10 of the tail rotor i bought for my aerohawk.. hahaha... it sure will lift... but with out battery on board.. lol..

(in reply to bluesilver30)
       Post #: 4

RE: No Swashplate Technology - 3/2/2004 8:23:27 AM   
tahustvedt



Posts: 385
Joined: 1/28/2004
From: Bardufoss, NORWAY
Status: offline 		You can replace the main rotor mast with a thick, hollow pipe and mount a spindle inside it with arms sticking out of the sides where the blades are to control them. That's how our Lynx works. It has no swash plate but instead uses a very simple and brilliant design.

(in reply to helisfreak)
       Post #: 5

RE: No Swashplate Technology - 3/2/2004 10:03:18 AM   
zeevro


 

Posts: 81
Joined: 12/28/2003
From: Kfar Saba, ISRAEL
Status: offline 		Can you post a picture of the system or a graphic explanation?

(in reply to tahustvedt)
       Post #: 6

RE: No Swashplate Technology - 3/2/2004 8:17:42 PM   
zeevro


 

Posts: 81
Joined: 12/28/2003
From: Kfar Saba, ISRAEL
Status: offline 		I have managed develope a semi-rigid rotorhead system w/o a swashplate. I call it MRCS( for Magnetic Rotorhead Control System)
There is a picture of it.

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to zeevro)
       Post #: 7

RE: No Swashplate Technology - 3/2/2004 9:39:36 PM   
glennT


 

Posts: 74
Joined: 12/8/2003
From: ;,
Status: offline 		That's great, sauske! Is the control variable or 2-state? I mean are you varying the magnet strength or justing switching it on and off?

(in reply to zeevro)
       Post #: 8

RE: No Swashplate Technology - 3/2/2004 10:35:02 PM   
tahustvedt



Posts: 385
Joined: 1/28/2004
From: Bardufoss, NORWAY
Status: offline
quote:

ORIGINAL: sauske

Can you post a picture of the system or a graphic explanation?




I made this simple 3D model to explain the concept. It could be made with a lathe if one was dedicated enough. The Green part is the "Spindle". The blue thing at the bottom of the spindle is the "Spindle Bearing" which is the one that the servos move laterally and fore&aft + up/down for collective. The spindle bearing does not rotate, but everything else in the picture does. The spindle bearing would need to have a ball bearing between it and the spindle. The balls on the ends of the arms from the spindle are connected to the blades via pitch-links. The beige part is the bearing for the spindle assembly. It's secured to the spindle and the light blue tube. The light blue tube can slide up and down inside the light green main rotor hub assembly for collective control. This design does not have a shaft or a swash plate.

(in reply to zeevro)
       Post #: 9

RE: No Swashplate Technology - 3/3/2004 8:34:12 AM   
zeevro


 

Posts: 81
Joined: 12/28/2003
From: Kfar Saba, ISRAEL
Status: offline 		I don't know if it will be variable or "On\Off" I'll have to build a prototype to test the system...

(in reply to glennT)
       Post #: 10

RE: No Swashplate Technology - 3/3/2004 10:35:16 AM   
zeevro


 

Posts: 81
Joined: 12/28/2003
From: Kfar Saba, ISRAEL
Status: offline 		Genius design tahustvedt!!!

(in reply to tahustvedt)
       Post #: 11

RE: No Swashplate Technology - 3/3/2004 11:15:26 AM   
Super-Hornet


 

Posts: 565
Joined: 1/13/2004
From: Earth, SINGAPORE
Status: offline 		Cool design!!! it looks logical enough to work.

maybe u need variable magnetic strenght and also sensor to sense the magnet whereabout. Maybe u need to turn on and off the Electromagnetic also because the strenght of electromagnet and magnet may slow or cause fluctuation on the spinning blades due to magnetic pull. Maybe use pushing effect (opposite) instead. With pushing effect, maybe u no need to turn on and off.

Super-Hornet

(in reply to zeevro)
       Post #: 12

RE: No Swashplate Technology - 6/19/2004 12:00:05 PM   
lastdecember


 

Posts: 2
Joined: 6/19/2004
From: des moines, IA, USA
Status: offline 		have any of you seen the pixilito it uses no swash tech but someone bought the licence so he cant show images or explane its workings http://pixelito.reference.be/#pictures i cant belive the size of that thing

(in reply to Super-Hornet)
       Post #: 13

RE: No Swashplate Technology - 6/19/2004 12:10:36 PM   
lastdecember


 

Posts: 2
Joined: 6/19/2004
From: des moines, IA, USA
Status: offline
quote:

ORIGINAL: Super-Hornet

Cool design!!! it looks logical enough to work.

maybe u need variable magnetic strenght and also sensor to sense the magnet whereabout. Maybe u need to turn on and off the Electromagnetic also because the strenght of electromagnet and magnet may slow or cause fluctuation on the spinning blades due to magnetic pull. Maybe use pushing effect (opposite) instead. With pushing effect, maybe u no need to turn on and off.

Super-Hornet


i don't think that the resistance in his design would be any higher than that caused by wind resistance from the linkage on a swash design my even be less is the shapes are contoured my thought on it is if it would be n a large enough scale you could use say 8 electro mag and 2 strengths so you could bring the blade to position more gradually as it rotates that way it would behave more like a swash and neg on opposite sides like
___0____
__1_ -1__
_2____-2_
__1__-1__
___0_____
what i think is cool is that it would be colective as well

< Message edited by lastdecember -- 6/19/2004 12:16:47 PM >

(in reply to Super-Hornet)
       Post #: 14

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