EHD Lifter studies

[Linda Brown]

For those of you who are actually interested in my Dads science this might be of interest to you. Rose has just posted this on the Cosmic-Token and I invite you to read it and the links that she supplies.

http://cosmic-token.com/forum/viewtopic ... 002#p10002

I always have loved the word Consortium. And it looks like Pa is keeping up proper research.

Linda

[Linda Brown]

hahahaha, Well. I guess its just not supposed to work from this site. Linda

[Linda Brown]

This is Roses Post..... directly..... since the link for some reason does not want to work.

drawn from
http://cosmic-token.com/forum/viewtopic.php?f=2&t=485


re-rose » Sat Oct 27, 2012 9:23 pm

Looks like lifters are still getting some attention in academic circles...at least at Gannon University in Pennsylvania, where the work is "supported in part by the Pennsylvania Space Grant Consortium."Posting for those doing this type of experiments...
rose

"Thrust Origin in EHD Lifters", Published last year (2011) by Zhao and Liaw in the proceedings of the IEEE Industry Applications Society Annual Meeting

Abstract
This paper1 presents the results of the analytical and experimental studies of thrust origin in electrohydrodynamic lifters. It was found that the thrust is the reactive force to the force driving the EHD flow when the electric corona discharge takes place. The results of the experiments confirmed that the thrust is mainly applied on the ground electrode and the net force on the corona wire is negative. The configuration of the lifter affects the thrust but simply increasing the number of corona wires won't increase the thrust.

Order from:
http://ieeexplore.ieee.org/xpl/articleD ... %3A6074261%2

And, by the same authors:

Automatic Remote Control and Data Acquisition for Experimental Study of EHD Lifters

Abstract --
This paper presents the design of the automatic remote control and data acquisition for the EHD lifter experiment apparatus. The proposed setup is capable of automatically measuring the lifter thrust force, source current, corona current, and leakage current. Such strategy helps to prevent human reading error and provides better accuracy than manual data recording. In addition, certain statistic estimation on the measurement can be achieved readily but prove to be difficult and tedious for human manual reading, for example the thrust force standard deviation from the mean value for each applied voltage. Each component in the setup and its rationality is described in detail. Selected experiment results are presented to demonstrate the benefit of using such automation system. Unexpected finding of such results are discussed and further investigation is recommended.

http://electrostatics.org/images/ESA2012_S10.pdf

Experimental Studies of EHD lifters
Lia Koziell1, Lin Zhao2, Jonathan Liaw3 and Kazimierz Adamiak4
1,2,3Electrical & Computer Engineering Dept, Gannon University, Erie, PA, 16541
phone: (1) 814-871-5854
e-mail: 1Koziell001@gannon.edu 2zhao001@gannon.edu

Abstract—This paper presents the experimental studies of the electrohydrodynamic (EHD)
lifters. The detailed structures of two lifters were illustrated, followed by the presentation of
the levitation experiment. The origin of the thrust force was proposed and confirmed by a
special designed lifter and its levitation experiment.

Proc. ESA Annual Meeting on Electrostatics 2011"
*************************************************************************************************************

More of this kind of message here would be more suitable I would think than what has been posted here consistantly in the past. Linda