Electronic System in MARS-I NEED HELP PLEASE - Page 1
Forum section: electronics / beginners

author: drock24
author_rank: Newbie
timestamp: November 25, 2013, 08:25:38 pm
content: HelloI have a presentation to do for my speech class on Electrinic Systems in MARS. My assigned topic is "how to implement Electrical systems in MARS and how to make everything run smoothly". Can you please help me understand how to answer the above question or point me to some helpful resources? Thank you

author: Alana
author_rank: Frequent Contributor
timestamp: November 25, 2013, 08:34:29 pm
content: MARS as in planet mars? Written like this suggest some acronym and if so - specify what it means.

author: GreyWoolfe
author_rank: Unknown
timestamp: November 25, 2013, 08:50:08 pm
content: The other MARS I know is the Military Affiliate Radio System.Tom, NW0LF

author: Kohanbash
author_rank: Regular Contributor
timestamp: November 26, 2013, 01:49:01 pm
content: If you are referring to the planet Mars some of the things you need to consider are:- Thermal extremes and rates of change- Radiation (especially during the cruise phase to Mars)- Dust mitigation- Vibration, acoustic, and shock (especially in launch and landing)- Outgassing components/wire

author: JohnnyGringo
author_rank: Regular Contributor
timestamp: November 26, 2013, 01:56:38 pm
content: And outsourcing. It's gonna be a real bitch from Mars.

author: tszaboo
author_rank: Super Contributor
timestamp: November 26, 2013, 02:44:03 pm
content: Quote from: drock24 on November 25, 2013, 08:25:38 pmIf you are from USA, just outsource it to the Chinese. There will be even a fake Nike factory and kebab place every corner on the mars by the time the USA makes it there.

author: Skimask
author_rank: Super Contributor
timestamp: November 26, 2013, 02:46:50 pm
content: I nominate this for "Post of the Week".

author: G7PSK
author_rank: Super Contributor
timestamp: November 26, 2013, 02:57:33 pm
content: Are they putting bugs in those as well now, just as well I dont like eating them then.

author: jahonen
author_rank: Super Contributor
timestamp: November 26, 2013, 06:38:26 pm
content: Electrical earthing will be difficult and expensive in Mars due to long earth wire required. One must consider marsing instead.Regards,Janne

author: Fsck
author_rank: Super Contributor
timestamp: November 26, 2013, 06:46:59 pm
content: Quote from: jahonen on November 26, 2013, 06:38:26 pmand on a future moon base, we'll have... mooning.

author: Neilm
author_rank: Super Contributor
timestamp: November 26, 2013, 06:58:02 pm
content: Quote from: Fsck on November 26, 2013, 06:46:59 pm

author: Rick Law
author_rank: Super Contributor
timestamp: November 26, 2013, 08:35:33 pm
content: Quote from: sdk32285 on November 26, 2013, 01:49:01 pmThere is another thermal problem - heat dissipation. With a thinner atmosphere, normal convection is not going to work as well on Mars as on earth.From earlier reading (way too long ago to remember where from), one of the puzzles during the early space age days was the melting flashlight. Not a big puzzle and took only moments to solve, but it was certainly unexpected until the first flashlight melted.*By the way, never take your date there for a romantic dinner - restaurants there has lousy atmosphere.

author: IanB
author_rank: Super Contributor
timestamp: November 26, 2013, 09:23:15 pm
content: Communication delay. It takes signals a long time to get to Mars and back, so you cannot have immediate feedback. You have to send a request and then wait to see if it did what you hoped.With spacecraft hands-on repair is out of the question. So you need fail safe and back up systems. Also you need modules that can be reconfigured and reprogrammed remotely. If something fails unexpectedly you may need the ability to reconfigure another module to take its place by sending software commands.

author: trackman44
author_rank: Regular Contributor
timestamp: November 26, 2013, 10:47:59 pm
content: Quote from: sdk32285 on November 26, 2013, 01:49:01 pmDon't forget ESD. Anti static shielding would be needed.Will

author: JohnnyGringo
author_rank: Regular Contributor
timestamp: November 26, 2013, 10:58:57 pm
content: Think we'll ever hear from drock24 (OP) again. All in all, it was an interesting question.

author: digsys
author_rank: Unknown
timestamp: November 26, 2013, 11:05:16 pm
content: You're all going to look silly if he meant the MARS edible bar !

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: November 26, 2013, 11:32:35 pm
content: This page has lots of info onMercuryArcRectifiers...www.electricstuff.co.uk/mercarc.html

author: Falcon69
author_rank: Super Contributor
timestamp: November 27, 2013, 07:34:41 pm
content: Maybe he meant that his research paper is on thishttp://en.wikipedia.org/wiki/Mars_1

author: BillyD
author_rank: Regular Contributor
timestamp: November 27, 2013, 09:42:16 pm
content: Quote from: Rick Law on November 26, 2013, 08:35:33 pmWhat was the melting flashlight problem? I never heard of that before.

author: Rick Law
author_rank: Super Contributor
timestamp: November 27, 2013, 10:09:14 pm
content: Quote from: BillyD on November 27, 2013, 09:42:16 pmBillyD,Because of the lack of air, both conduction and convection were impeded. Normal cooling (with surround air) allows heat to first conduct to surrounding air, and then the hot air get taken away by convection (heat rises). Convection also bring in cooler air.There was no conduction nor convection (or insufficient air for effective conduction or convection) to take away heated air. So when the flash light was on, the heat generated by the light bulb melted the flashlight "head" that held the light bulb after moments of use.I read this a long time ago post moon landing. I believe it was in an article about the hard work early on that lead to the later moon landing. Likely (if I remember right) it was during the Mercury program time frame that this "melted flash light" occurred.Rick