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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.


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Re: text only... 268 rainman 10-Jan-04 22:00
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Re: text only... 253 scimitar 11-Jan-04 19:20
Re: Gravametric distortions 272 Thunderbird 12-Jan-04 05:06
Re: Gravametric distortions 216 Jergat 15-Jan-04 20:58
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Re: 'Electric cosmos' theory 285 ArmchairObserver 11-Jan-04 09:42
Re: 'Electric cosmos' theory 250 OakeyDokey 11-Jan-04 13:16
Re: 'Electric cosmos' theory 235 Diomede 11-Jan-04 13:24
Re: 'Electric cosmos' theory 243 rainman 11-Jan-04 15:00
Re: 'Electric cosmos' theory 245 Diomede 16-Jan-04 06:57
Re: 'Electric cosmos' theory 224 Anne-Marie 16-Jan-04 07:53
Re: 'Electric cosmos' theory 240 Diomede 16-Jan-04 08:26
Re: 'Electric cosmos' theory 250 Diomede 16-Jan-04 09:13
Re: 'Electric cosmos' theory 236 Anne-Marie 16-Jan-04 17:27
Re: 'Electric cosmos' theory 262 cardinal guzman 16-Jan-04 19:46
Re: PS 246 rainman 11-Jan-04 18:18
Re: PS 237 Diomede 12-Jan-04 12:41
Re: PS 240 rainman 12-Jan-04 16:36
Re: PS 246 SunSword 12-Jan-04 21:05
Re: PS 242 Diomede 13-Jan-04 19:14
Re: Electrical Machining 231 Thunderbird 12-Jan-04 03:35
Re: Electrical Machining 249 Diomede 12-Jan-04 10:36
Re: Uniformity...the B.S. Benchmark 243 Thunderbird 13-Jan-04 16:53
Re: Uniformity...the B.S. Benchmark 263 Anne-Marie 14-Jan-04 19:22
Re: Uniformity...the B.S. Benchmark 256 Diomede 15-Jan-04 07:37
Re: Uniformity...the B.S. Benchmark 261 scimitar 15-Jan-04 10:51
Re: Electrical Machining 227 Anne-Marie 12-Jan-04 18:44
Re: 'Electric cosmos' theory 243 Richard Essame 11-Jan-04 22:03
Re: 'Electric cosmos' theory 292 rainman 11-Jan-04 23:21
Re: 'Electric cosmos' theory 272 cardinal guzman 11-Jan-04 23:45
Re: 'Electric cosmos' theory 231 scimitar 12-Jan-04 09:57
Re: 'Electric cosmos' theory 236 Geoff 12-Jan-04 00:26
Digital elevation mode.. 199 Geoff 12-Jan-04 00:41
Perspective........ 238 Geoff 12-Jan-04 03:32
Re: 'Electric cosmos' theory 254 Richard Essame 12-Jan-04 01:22
Re: 'Electric cosmos' theory 263 Richard Essame 12-Jan-04 01:35
Re: 'Electric cosmos' theory 295 Geoff 12-Jan-04 02:03
Re: 'Electric cosmos' theory 266 OakeyDokey 16-Jan-04 19:06
Re: Entry and Exit wounds 253 Thunderbird 16-Jan-04 20:12
Re: 'Electric cosmos' theory 241 scimitar 16-Jan-04 21:13
Re: 'Electric cosmos' theory 271 cardinal guzman 17-Jan-04 01:23
Re: 'Electric cosmos' theory 244 Melusine 12-Jan-04 03:41
Re: 'Electric cosmos' theory 256 Richard Essame 12-Jan-04 05:05
Re: 'Electric cosmos' theory 253 wirelessguru1 14-Jan-04 05:01
Re: 'Electric cosmos' theory 252 Richard Essame 14-Jan-04 07:29
Re: 'Electric cosmos' theory 241 Diomede 15-Jan-04 12:34
Re: 'Electric cosmos' theory 227 OakeyDokey 16-Jan-04 19:33
Re: 'Electric cosmos' theory 219 scimitar 16-Jan-04 22:04
Re: 'Electric cosmos' theory 245 cardinal guzman 17-Jan-04 00:48
Re: 'Electric cosmos' theory 251 OakeyDokey 17-Jan-04 23:43
Re: 'Electric cosmos' theory 202 scimitar 18-Jan-04 14:10
Re: 'Electric cosmos' theory 245 Anne-Marie 17-Jan-04 07:02
Re: 'Electric cosmos' theory 252 Anne-Marie 17-Jan-04 18:37
Re: 'Electric cosmos' theory 271 OakeyDokey 17-Jan-04 23:45
Re: 'Electric cosmos' theory 238 cardinal guzman 18-Jan-04 01:08
P.S. 202 scimitar 16-Jan-04 22:12
Re: 'Electric cosmos' theory 300 wirelessguru1 16-Jan-04 23:38
Re: 'Electric cosmos' theory 212 scimitar 17-Jan-04 00:56
Re: 'Electric cosmos' theory 247 wirelessguru1 17-Jan-04 08:16
Re: 'Electric cosmos' theory 228 Diomede 17-Jan-04 20:29
Re: 'Electric cosmos' theory 226 OakeyDokey 18-Jan-04 00:08
Re: 'Electric cosmos' theory 199 scimitar 18-Jan-04 14:24
Re: 'Electric cosmos' theory 251 OakeyDokey 18-Jan-04 14:42
Re: 'Electric cosmos' theory 338 Diomede 18-Jan-04 15:25
Re: 'Electric cosmos' theory 265 OakeyDokey 18-Jan-04 17:49
Re: 'Electric cosmos' theory 256 wirelessguru1 18-Jan-04 20:20
Re: 'Electric cosmos' theory 262 OakeyDokey 18-Jan-04 21:44
Re: 'Electric cosmos' theory 266 wirelessguru1 19-Jan-04 03:59
Re: 'Electric cosmos' theory 256 OakeyDokey 19-Jan-04 17:38
Re: 'Electric cosmos' theory 308 wirelessguru1 19-Jan-04 22:36
Re: 'Electric cosmos' theory 238 OakeyDokey 20-Jan-04 00:04
Re: 'Electric cosmos' theory 243 wirelessguru1 20-Jan-04 03:46
Re: Phase variance,matter,Nanomagnetism.... Ping for Diomede 242 Thunderbird 20-Jan-04 04:27
Re: Phase variance,matter,Nanomagnetism... . Ping for Diomede 204 Diomede 21-Jan-04 14:19
Re: 'Electric cosmos' theory 247 Diomede 19-Jan-04 19:12
Re: 'Electric cosmos' theory 220 OakeyDokey 19-Jan-04 19:23
Re: 'Electric cosmos' theory 246 cardinal guzman 18-Jan-04 19:21
Re: 'Electric cosmos' theory 213 Diomede 19-Jan-04 19:28
Re: 'Electric cosmos' theory 240 OakeyDokey 19-Jan-04 19:35
Re: 'Electric cosmos' theory 218 Diomede 20-Jan-04 16:49
Re: 'Electric cosmos' theory 232 OakeyDokey 20-Jan-04 17:12
Re: 'Electric cosmos' theory 250 OakeyDokey 18-Jan-04 18:01
grand canyon pic 244 cardinal guzman 05-Feb-04 02:08
Re: grand canyon pic 502 Thunderbird 05-Feb-04 05:45

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