HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
Page 1/4  >  >>
Ann R. Thryft
User Rank
Blogger
Re: Cleaning up space
Ann R. Thryft   8/22/2012 12:42:02 PM
NO RATINGS
There are a few polymer-eating bacteria, although so far I don't believe any have been corralled to harvest plastic from the oceans. I'd love to find out differently. Anyone know?

Dave Palmer
User Rank
Platinum
Re: Cleaning up space
Dave Palmer   8/21/2012 10:33:35 AM
NO RATINGS
@sbkenn: On the subject of plastic contamination in the oceans, Donovan Hohn's book Moby Duck is a fascinating read.  He tried to track the journey of 28,800 bath toys that fell off a container ship.  I highly recommend it.

sbkenn
User Rank
Gold
Re: Cleaning up space
sbkenn   8/21/2012 6:26:48 AM
NO RATINGS
@Beth, it is said that a teaspoonfull of sediment, from any bit of sea floor on the planet, will contain visible pieces of plastic.  A shocking reflection of our habits IMO.

I know that there are bacteria that consume iron(very slowly), and oil, but not sure about polymers.

Charles Murray
User Rank
Blogger
Re: SPACE JUNK
Charles Murray   8/20/2012 8:47:31 PM
NO RATINGS
Great stats, bobjengr. I had no idea there were so many little pieces of debris. 

Rob Spiegel
User Rank
Blogger
Re: Cleaning up space
Rob Spiegel   8/20/2012 5:43:05 PM
NO RATINGS
I like your plug and play idea, Ralphy Boy. And if that fails, I'd opt for the duct tape. There are very few things duct tape won't fix -- except a leak in a swamp cooler hose, as I found out recently.

Ralphy Boy
User Rank
Platinum
Re: Cleaning up space
Ralphy Boy   8/20/2012 5:20:50 PM
NO RATINGS
I didn't get to see the video yet (at work), but I am wondering how easy or hard it is for parts to be scavenged from one sat and then applied to another.

Even on sats of the same type there could be hardware and alignment issues. We make small changes to print packs all the time. I'd hate to see a bot going from one out of service sat to another searching for a hole/pin alignment match. Or filing out a hole to get a fit... ; )

Also, a lot of things might be potted in place, or otherwise hard to remove. Perhaps a tile knife, some outer space approved duct-tape, and a spool of bailing wire would be a handy addition to the tool box.

On the other hand, if it hasn't already happened... a plug and play, snap in place assembly line-one size fits all design regimen in the future could insure a high rate of retro-booting.

We made 100+ battery packs for a sat network some years back. They were all identical. If some of those are bricks, and other sats have been shut down for other reasons but the batteries might still be good... that might be a worthwhile swap depending on how the 2kg packs were installed.

 

Ann R. Thryft
User Rank
Blogger
Re: SPACE JUNK
Ann R. Thryft   8/20/2012 11:38:48 AM
NO RATINGS
bob, thanks for quoting that info from NASA's site on space junk. It's amazing how many small particles there are, but scary how many large ones weighing more than 200 lbs are flying around.

Ann R. Thryft
User Rank
Blogger
Re: Cleaning up space
Ann R. Thryft   8/20/2012 11:32:41 AM
NO RATINGS
I agree, that sounds like a great idea. I wonder if DARPA is working on that?

Beth Stackpole
User Rank
Blogger
Re: Cleaning up space
Beth Stackpole   8/20/2012 9:48:34 AM
NO RATINGS
@Shane: Love to hear more about robots cleaning up the junk on the ocean floor as well. My guess is there's probably more stuff to clean up in the deep waters than out in space.

j-allen
User Rank
Gold
Re: Space Junk- The final frontier?
j-allen   8/19/2012 6:02:21 PM
Cute exercise in Gallilean relativity, but why did you add all those velocities as scalar quantities?  Unless thye are all in the same direction, you need to add them vectorially.   Still, what's the point?  For the space junk problem what counts is the velocity of a piece ralative to a satellite with which it might collide. 

Page 1/4  >  >>


Partner Zone
Latest Analysis
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team 100 to make (about $161 US).
At Medical Design & Manufacturing Midwest, Joe Wascow told Design News how Optimal Design prototyped a machine that captures the wing-beat of a duck.
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service