Lifter modeling toolbox

To find out how your Lifter will behave in given conditions, just use the

below equations. They are based on ion-drift theory, derived from conventional

physics elsewhere in
__this site__
, and are proven by multiple experiments in Lifters

group.

You can use this equations in your own favorite math-package (say, Excell)

or you can get the mathcad program
__here__
__,__ then download MathCad 8 viewer from

__ftp://ftp.rzbd.haw-hamburg.de/pub/files/mcexp802.exe__ or other place where you

find this package, and make all calculations "life".

Using MathCad viewer, you can actually change any values, for example Voltage,

radius, etc. then press F9 and see what results for force, current, power-usage and

efficiency you will get for your particular lifter configuration.
**Here come physical constants used in the equations**

Dielectric constant or air

Electric mobility of positive ions in air at 1 atm and

zero C temperature. Use negative mobility k0_neg if (-) corona wire is used.

Acceleration of the free-fall

**Enter the particular Lifter design parameters here:**

Radius of corona wire

Voltage applied between corona wire and collector

Distance between corona wire and collector

Lengh of your corona wire/collector combo. Same as the perimeter of your Lifter.

**Enter athmospheric conditions here**

Pressure, atm

Temperature, C

**Equations used in the calculations**

__Pressure dependence__

__of ion mobility__

ion mobility at conditions

you chose

__Geometric factor__

Effective collector width

__Corona onset voltage__

__equation (Peek's equation)__

*this equation has strange units because it was derived by Peek

empyrically. To be able to write it without unit removers, use both d

and r in cm, you will get voltage in volts, as shown bellow:

__Current which will flow between__

__electrodes, per meter*__.

*note: use rounded up upper side of collector (Al-skirt) to prevent ionization on collector.

Sharp edge of collector can increase current and simultaneously reduce thrust. Lifter1 shows more current

and less thrust than this equations due to this problem.

__Force exhibited by Lifter in direction from collector to corona__

__Power consumption of Lifter__

__Force /power efficiency, N/Watt__

__Lifting weight /power efficiency, gm/Watt__

**Summary of results for your configuration**

Voltage where lifter effect will

start at your conditions

Current in your configuration

Force in your configuration

Force expressed as lifting weight

Power consumption

Force /power efficiency, N/Watt

Lifting weight /power efficiency, gm/Watt