Harry wrote: >> 100 kg thrust, 1 m gap, 0.9 kV/mm ... > Is this correct? > > power consumption 9 kW > area 3.1 m^2 > wire spacing 1.3m
Only the wire spacing is correct, check your power and area calculations. > Suggestions: > Rephrase the scaling rules to read: > > "The W per g are proportional to the kV/mm, whereas the m^2 per g are > proportional to the inverse square of the kV/mm." > > I would also explicitly show the mass in the calculation > of the area in the example section. Thanks for the improvements, revised version: ********************************************* MULTIWIRE-PLANE LIFTER/IONOCRAFT DESIGN GUIDE: -------- Reference design: At 1 kV/mm (the max we can do without arcing) the power consumption is 2 W per "gram" of thrust, and the required area is 0.0025 m^2 per g. Scaling rules: The W per g are proportional to the kV/mm, whereas the m^2 per g are proportional to the inverse square of the kV/mm. Wire: as thin as possible (0.1mm OK in most cases), wire-wire spacing = 1.3 times the gap length d (optimum value) EXAMPLE: --------------- We want to lift 50 g, and we choose a v/d of half the max value i.e. 0.5 kV/mm, namely v=25kV for a d=50mm gap, to save on power consumption (our color monitor is only 75W) 1/ Required power per g: 2 W * 0.5 = 1 W -> Power consumption for 50 g = 50 W 2/ Required area per g: 0.0025 m^2 / 0.5^2 = 0.01 m^2 -> Area for 50 g = 0.50 m^2 3/ Wire-wire spacing: 1.3*50 mm = 65mm ********************************************* -- Michel
