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I believe that, as soon as a lander comes in contact with a planet/moon's surface, THAT is the point at which arcing would occur. The rover, astronauts, and other on-board equipment shielded from the arc itself, and the difference of potential is equalized. When the spacecraft, (and aircraft, for that matter) is designed, it is, as I understand it, designed to shield its payload by taking charge/discharge events through the air/space fram structure, rather along the lines if a Faraday Cage.

As exemples, I have seen demonstrations of electric utility linemen using helicopters to service remote areas on transmission lines; as the helo approaches the power line, it has a stiff, heavy copper wire protruding to the side, which draws an arc (sometimes of a couple feet long) from the line to the helo; because of the helo's metal skin fuselage (and Faraday cage effect) the occupants of the helo are not injured, and can place insulators in the line, and proceed to work. Of course, it only works if you are dealing with one charge source...if the helo or linemen came too close to two DIFFERENT lines..BZZZZZT!! Similarly, airplanes have often been struck by lightning and survived with some skin damage to the craft, and passengers uninjured; meanwhile, the discharge wicks will dump excess charge back into the atmosphere.

When the mars landers hit the surface (and experience whatever equalizing arc effects), the on-board rovers will become equalised with the surface, also. When the lander opens its petals, it is grounded to the martian surface, and the rover has grounded contact with the surface through the lander; therefore, when the rover (or astronaut) leaves the lander, there is no more difference of potential to cause damage.

I don't know if I have clarified or muddied things with this; maybe I will just shaddap before I get a migraine.

Cheers!

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Subject Views Written By Posted
'Electric cosmos' theory 684 rainman 10-Jan-04 21:58
Re: text only... 233 rainman 10-Jan-04 22:00
Re: text only... 217 OakeyDokey 10-Jan-04 23:34
Re: text only... 230 cardinal guzman 11-Jan-04 00:33
Re: text only... 218 scimitar 11-Jan-04 19:20
Re: Gravametric distortions 224 Thunderbird 12-Jan-04 05:06
Re: Gravametric distortions 177 Jergat 15-Jan-04 20:58
Re: 'Electric cosmos' theory 230 coggas 11-Jan-04 02:49
Re: 'Electric cosmos' theory 246 ArmchairObserver 11-Jan-04 09:42
Re: 'Electric cosmos' theory 211 OakeyDokey 11-Jan-04 13:16
Re: 'Electric cosmos' theory 195 Diomede 11-Jan-04 13:24
Re: 'Electric cosmos' theory 202 rainman 11-Jan-04 15:00
Re: 'Electric cosmos' theory 206 Diomede 16-Jan-04 06:57
Re: 'Electric cosmos' theory 183 Anne-Marie 16-Jan-04 07:53
Re: 'Electric cosmos' theory 196 Diomede 16-Jan-04 08:26
Re: 'Electric cosmos' theory 208 Diomede 16-Jan-04 09:13
Re: 'Electric cosmos' theory 197 Anne-Marie 16-Jan-04 17:27
Re: 'Electric cosmos' theory 222 cardinal guzman 16-Jan-04 19:46
Re: PS 208 rainman 11-Jan-04 18:18
Re: PS 194 Diomede 12-Jan-04 12:41
Re: PS 195 rainman 12-Jan-04 16:36
Re: PS 206 SunSword 12-Jan-04 21:05
Re: PS 203 Diomede 13-Jan-04 19:14
Re: Electrical Machining 188 Thunderbird 12-Jan-04 03:35
Re: Electrical Machining 211 Diomede 12-Jan-04 10:36
Re: Uniformity...the B.S. Benchmark 205 Thunderbird 13-Jan-04 16:53
Re: Uniformity...the B.S. Benchmark 225 Anne-Marie 14-Jan-04 19:22
Re: Uniformity...the B.S. Benchmark 215 Diomede 15-Jan-04 07:37
Re: Uniformity...the B.S. Benchmark 222 scimitar 15-Jan-04 10:51
Re: Electrical Machining 190 Anne-Marie 12-Jan-04 18:44
Re: 'Electric cosmos' theory 199 Richard Essame 11-Jan-04 22:03
Re: 'Electric cosmos' theory 255 rainman 11-Jan-04 23:21
Re: 'Electric cosmos' theory 235 cardinal guzman 11-Jan-04 23:45
Re: 'Electric cosmos' theory 197 scimitar 12-Jan-04 09:57
Re: 'Electric cosmos' theory 189 Geoff 12-Jan-04 00:26
Digital elevation mode.. 160 Geoff 12-Jan-04 00:41
Perspective........ 197 Geoff 12-Jan-04 03:32
Re: 'Electric cosmos' theory 210 Richard Essame 12-Jan-04 01:22
Re: 'Electric cosmos' theory 223 Richard Essame 12-Jan-04 01:35
Re: 'Electric cosmos' theory 253 Geoff 12-Jan-04 02:03
Re: 'Electric cosmos' theory 225 OakeyDokey 16-Jan-04 19:06
Re: Entry and Exit wounds 208 Thunderbird 16-Jan-04 20:12
Re: 'Electric cosmos' theory 204 scimitar 16-Jan-04 21:13
Re: 'Electric cosmos' theory 230 cardinal guzman 17-Jan-04 01:23
Re: 'Electric cosmos' theory 202 Melusine 12-Jan-04 03:41
Re: 'Electric cosmos' theory 213 Richard Essame 12-Jan-04 05:05
Re: 'Electric cosmos' theory 210 wirelessguru1 14-Jan-04 05:01
Re: 'Electric cosmos' theory 209 Richard Essame 14-Jan-04 07:29
Re: 'Electric cosmos' theory 199 Diomede 15-Jan-04 12:34
Re: 'Electric cosmos' theory 188 OakeyDokey 16-Jan-04 19:33
Re: 'Electric cosmos' theory 181 scimitar 16-Jan-04 22:04
Re: 'Electric cosmos' theory 205 cardinal guzman 17-Jan-04 00:48
Re: 'Electric cosmos' theory 205 OakeyDokey 17-Jan-04 23:43
Re: 'Electric cosmos' theory 164 scimitar 18-Jan-04 14:10
Re: 'Electric cosmos' theory 207 Anne-Marie 17-Jan-04 07:02
Re: 'Electric cosmos' theory 205 Anne-Marie 17-Jan-04 18:37
Re: 'Electric cosmos' theory 231 OakeyDokey 17-Jan-04 23:45
Re: 'Electric cosmos' theory 199 cardinal guzman 18-Jan-04 01:08
P.S. 161 scimitar 16-Jan-04 22:12
Re: 'Electric cosmos' theory 259 wirelessguru1 16-Jan-04 23:38
Re: 'Electric cosmos' theory 173 scimitar 17-Jan-04 00:56
Re: 'Electric cosmos' theory 206 wirelessguru1 17-Jan-04 08:16
Re: 'Electric cosmos' theory 191 Diomede 17-Jan-04 20:29
Re: 'Electric cosmos' theory 188 OakeyDokey 18-Jan-04 00:08
Re: 'Electric cosmos' theory 159 scimitar 18-Jan-04 14:24
Re: 'Electric cosmos' theory 204 OakeyDokey 18-Jan-04 14:42
Re: 'Electric cosmos' theory 297 Diomede 18-Jan-04 15:25
Re: 'Electric cosmos' theory 228 OakeyDokey 18-Jan-04 17:49
Re: 'Electric cosmos' theory 217 wirelessguru1 18-Jan-04 20:20
Re: 'Electric cosmos' theory 224 OakeyDokey 18-Jan-04 21:44
Re: 'Electric cosmos' theory 223 wirelessguru1 19-Jan-04 03:59
Re: 'Electric cosmos' theory 218 OakeyDokey 19-Jan-04 17:38
Re: 'Electric cosmos' theory 269 wirelessguru1 19-Jan-04 22:36
Re: 'Electric cosmos' theory 200 OakeyDokey 20-Jan-04 00:04
Re: 'Electric cosmos' theory 201 wirelessguru1 20-Jan-04 03:46
Re: Phase variance,matter,Nanomagnetism.... Ping for Diomede 207 Thunderbird 20-Jan-04 04:27
Re: Phase variance,matter,Nanomagnetism... . Ping for Diomede 166 Diomede 21-Jan-04 14:19
Re: 'Electric cosmos' theory 205 Diomede 19-Jan-04 19:12
Re: 'Electric cosmos' theory 181 OakeyDokey 19-Jan-04 19:23
Re: 'Electric cosmos' theory 206 cardinal guzman 18-Jan-04 19:21
Re: 'Electric cosmos' theory 174 Diomede 19-Jan-04 19:28
Re: 'Electric cosmos' theory 201 OakeyDokey 19-Jan-04 19:35
Re: 'Electric cosmos' theory 178 Diomede 20-Jan-04 16:49
Re: 'Electric cosmos' theory 192 OakeyDokey 20-Jan-04 17:12
Re: 'Electric cosmos' theory 211 OakeyDokey 18-Jan-04 18:01
grand canyon pic 207 cardinal guzman 05-Feb-04 02:08
Re: grand canyon pic 438 Thunderbird 05-Feb-04 05:45


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