Author Topic: Active Pitchcontrol  (Read 251098 times)

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XeonPony

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Re: Active Pitchcontrol
« Reply #900 on: November 06, 2017, 01:46:25 PM »
yes I understand this but there is way to much fluf with nothing to do with the topic building up in here, yours is a very nice project and think better served if it was given it's on thread then link to this one for the pitch control parts.

Nothing personal just I been looking over this for the topic and just so much more messy now then what it was.
Ignorance is not bliss, You may not know there is a semie behind you but you'll still be a hood ornimant!

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mbouwer

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Re: Active Pitchcontrol
« Reply #901 on: November 06, 2017, 05:37:28 PM »
XeonPony,

Thanks for your comment. You're right.
Let us talk about active pitchcontrol in this topic.

Regards Rinus.

mbouwer

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Re: Active Pitchcontrol
« Reply #902 on: December 01, 2017, 06:55:26 AM »
To attach the pitch control system I have threaded holes M4 at the back of the shaft.

mbouwer

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Re: Active Pitchcontrol
« Reply #903 on: December 07, 2017, 09:26:29 AM »
Pitch bracket for guiding the threaded M 12 steering rod.

mbouwer

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Re: Active Pitchcontrol
« Reply #904 on: December 17, 2017, 05:39:07 AM »
Mounted bracked / steering rod / cable driven nut.

mbouwer

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Re: Active Pitchcontrol
« Reply #905 on: December 18, 2017, 09:00:56 AM »
Now first I want to shape the blade suspension.
Base ring. Later on the holes need to be reamed to 6 mm.
« Last Edit: December 18, 2017, 09:09:03 AM by mbouwer »

mbouwer

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Re: Active Pitchcontrol
« Reply #906 on: December 19, 2017, 05:16:09 AM »
Now I need 3  bearing arrangements.
I'd like to integrate the bearings in the blades.

mbouwer

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Re: Active Pitchcontrol
« Reply #907 on: December 20, 2017, 04:44:52 AM »
The pitch bearings for these small blades, I would like to perform as slide bearings.
Lightweight: polyester on steel and stainless steel nut on thread.
             
« Last Edit: December 20, 2017, 04:57:44 AM by mbouwer »

mbouwer

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Re: Active Pitchcontrol
« Reply #908 on: December 21, 2017, 09:39:00 AM »
The polyester sleeves which have to be included in the blades.
« Last Edit: December 21, 2017, 04:42:19 PM by mbouwer »

mbouwer

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Re: Active Pitchcontrol
« Reply #909 on: December 23, 2017, 09:46:57 AM »
Now it comes to guiding the movement of the pitching rod.
« Last Edit: December 23, 2017, 01:20:53 PM by mbouwer »

mbouwer

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Re: Active Pitchcontrol
« Reply #910 on: December 24, 2017, 05:43:40 AM »
How can we come to a pitch control steering design for do-it-yourself builders such as applied on proffessional mills?

Pitch rod bearing.

mbouwer

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Re: Active Pitchcontrol
« Reply #911 on: December 26, 2017, 09:46:22 AM »
Midwoud has made a steering unit for me. It's based on an Arduino and controls the number of blade revolutions of his Piggott 3 m.
Along with forum members I would like to try to customize and extend that arrangement.

The mold for the pitch steering guiding.

mbouwer

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Re: Active Pitchcontrol
« Reply #912 on: December 27, 2017, 08:26:04 AM »
Besides the speed of the blades it would be nice to monitor the power output, the vibration switch, the generator temperature etc.

Steering rod guidance frame.

mbouwer

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Re: Active Pitchcontrol
« Reply #913 on: December 29, 2017, 06:08:56 AM »
Once a professional controller for our mills is developed, everyone of us can use it.

The blade push rod.

mbouwer

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Re: Active Pitchcontrol
« Reply #914 on: December 30, 2017, 05:44:55 AM »
The blade ajustment.
For clarity I have covered the generator with paper.

midwoud1

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Re: Active Pitchcontrol
« Reply #915 on: December 31, 2017, 02:02:11 PM »

           Happy NewYear  to all Fieldliners

         

         

SparWeb

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Re: Active Pitchcontrol
« Reply #916 on: January 01, 2018, 02:40:00 PM »
Looking good.  Thank you for keeping us up to date all year.
No one believes the theory except the one who developed it.  Everyone believes the experiment except the one who ran it.

System spec: 135w BP multicrystalline panels, regulated by Xantrex C40, DIY 8ft diameter wind turbine, regulated by Tri-Star TS60, 800AH x 24V AGM Battery, Xantrex SW4024

mbouwer

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Re: Active Pitchcontrol
« Reply #917 on: January 16, 2018, 02:36:09 PM »
Especially at stormy weather pitch contol promotes a good night sleep.
How can we improve the components?
« Last Edit: January 16, 2018, 02:42:05 PM by mbouwer »

XeonPony

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Re: Active Pitchcontrol
« Reply #918 on: January 17, 2018, 09:40:55 AM »
I'd be uncomfortable personally relying on pure friction to transmit torque to my blade, I'd use some sort of locking pin into the blade root my self.

Ignorance is not bliss, You may not know there is a semie behind you but you'll still be a hood ornimant!

Nothing fails like prayer, Two hands clasped in work will achieve more in a minute then a billion will in a melenia in prayer. In other words go out and do some real good by helping!

mbouwer

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Re: Active Pitchcontrol
« Reply #919 on: January 18, 2018, 05:21:24 AM »
You are right. Safety first.
Can we get in touch with forum members who can implement strength calculations?
« Last Edit: January 18, 2018, 05:40:25 AM by mbouwer »

XeonPony

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Re: Active Pitchcontrol
« Reply #920 on: January 18, 2018, 06:56:21 AM »
Any system I build that requires torque transmission for control I use splined or keyed shaft, being the key runs same length as the shortest member, failing those two usually a couple grub screws or roll pin, just some sort of positive locking system.

As time goes vibration and water ingression can cause enough slippage for bad things to happen.
Ignorance is not bliss, You may not know there is a semie behind you but you'll still be a hood ornimant!

Nothing fails like prayer, Two hands clasped in work will achieve more in a minute then a billion will in a melenia in prayer. In other words go out and do some real good by helping!

mbouwer

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Re: Active Pitchcontrol
« Reply #921 on: January 19, 2018, 06:30:34 AM »
To twist the blade the necessary torque power is not that huge. Also because the blade itsself is suspended in the line of gravity.

Also see reply #907

« Last Edit: January 19, 2018, 07:49:59 AM by mbouwer »

mbouwer

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Re: Active Pitchcontrol
« Reply #922 on: February 04, 2018, 07:42:17 AM »
Sealings around the blade root can prevent water ingression.

kitestrings

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Re: Active Pitchcontrol
« Reply #923 on: February 05, 2018, 09:57:51 AM »
Isn't your wind direction incorrect in the 01/16 post?  The wind normally is coming at the flat side of the blade, and due to the rotation of the blades the relative wind typically hits the airfoil at angle just a few degrees off the cord line at the tips.

mbouwer

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Re: Active Pitchcontrol
« Reply #924 on: February 05, 2018, 02:10:45 PM »
Kitestrings,

You are right of course. But the drawing only served to support the question which I very much would like to talk about.
How can we improve the components?