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TDM thrust load
By Seth, Section Homebrewed Electricity Posted on Mon Dec 8th, 2003 at 04:29:48 PM MST
TDM thrust load

Ok, now that we are on the subject....
Just how much twisting and stuff can a TDM take.... say if i made blades like
this wire and tube blade; http://windstuffnow.com/main/one_hour_projects.htm , its light and strong. So in its self wouldnt put alot of bearing load.... its the gusts of wind that would be the problem..... wouldnt it??

TDM thrust load | 4 comments (4 topical, 0 editorial)

Re: TDM thrust load (none / 0) (#1)
by desertratjack on Tue Dec 9th, 2003 at 11:05:46 AM MST
(User Info)

That doesn't seem to be Time Division Multiplex? but the referred-to site was pretty. What is TDM thrust load?

Re: TDM thrust load (none / 0) (#2)
by Seth on Tue Dec 9th, 2003 at 11:23:43 AM MST
(User Info)

Im refering to a Tape Drive Motor (like a large computer main frame) .... they are dc in and if U spin them... they out put a DC voltage/current.
Trying to move my solar pannels is fun.
[ Parent ]

Re: TDM thrust load (none / 0) (#4)
by desertratjack on Wed Dec 10th, 2003 at 01:00:52 PM MST
(User Info)

Ohh! thanks

[ Parent ]

Re: TDM thrust load (none / 0) (#3)
by windstuffnow (elenz(at)windstuffnow(dot)com) on Tue Dec 9th, 2003 at 05:22:24 PM MST
(User Info) http://www.windstuffnow.com/main

You wouldn't have any problem with thrust loads on most PM motors as long as they have bearings and not bushings. Most of the load on the shaft is highest when the machine is seeking the wind. The gyro effect tries to hold the blades in one position and the tail wants to seek the wind thus loading the bearings during rotation. Most motors with a 5/8" shaft or larger ( depending on the blade diameter and how its attatched ) can hold the forces.

The one hour blades you refered to work quite well. I think they would work better if the ribs were made as an airfoil as opposed to how I originally built them using the tube as the leading edge. But for a quick and simple blade they work great.

Have Fun!
Ed
Have Fun! Windstuff Ed

TDM thrust load | 4 comments (4 topical, 0 editorial)

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