HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/6  >  >>
Ann R. Thryft
User Rank
Blogger
Re: Variety of water worthy robots
Ann R. Thryft   5/29/2013 11:30:32 AM
NO RATINGS
William, what was funny wasn't the thinness of the fish's profile--I've noticed that before--it was the idea of their missile launching capability. I think that's what Rob was also reacting to.



William K.
User Rank
Platinum
Re: Variety of water worthy robots
William K.   5/28/2013 7:31:16 PM
NO RATINGS
Ann, watch some of those fish in the big aquarium at your local zoo. There are a few of them that are huge when viewed from the side, and they really do become hard to see when they turn and swim away. My guess is that it is that way to confuse predators.

Ann R. Thryft
User Rank
Blogger
Re: Variety of water worthy robots
Ann R. Thryft   5/28/2013 11:36:32 AM
NO RATINGS
That is funny, William--thanks for the laugh.

Rob Spiegel
User Rank
Blogger
Re: Variety of water worthy robots
Rob Spiegel   5/6/2013 10:26:05 PM
NO RATINGS
Good point, William K. That's funny. I would imagine missile-launching capability trumps all with our sub fleet.

William K.
User Rank
Platinum
Re: Variety of water worthy robots
William K.   5/6/2013 10:00:44 PM
NO RATINGS
Rob, sometimes efficiency and streamlining are not the only consideration. Watch some of those fish at the aquarium, some very big fish disappear when they are viewed from the front or the rear. And you don't see very many fish with missile launching abilities.

Rob Spiegel
User Rank
Blogger
Re: Variety of water worthy robots
Rob Spiegel   5/6/2013 6:37:00 PM
NO RATINGS
That makes sense, William K. It looks like many of our existing water-based vehicles are rather bukly -- such as subs. But perhaps I'm wrong. Maybe they're suited for moving through water.

Ann R. Thryft
User Rank
Blogger
Re: Variety of water worthy robots
Ann R. Thryft   5/6/2013 1:51:44 PM
NO RATINGS
William is right about shape mattering even more in water than it does in air as far as a fish--or a robot's--speed, maneuverability, and efficiency and therefore power consumption. Just think how much harder it is to swim through water than to walk through air, and the muscles swimming gives your arms as a result.

Ann R. Thryft
User Rank
Blogger
Re: Variety of water worthy robots
Ann R. Thryft   5/6/2013 1:51:04 PM
NO RATINGS
Thanks Rob, I agree about the design "energy savings" made possible by biomimicry.

William K.
User Rank
Platinum
Re: Variety of water worthy robots
William K.   5/3/2013 8:24:35 PM
NO RATINGS
  • Rob, shape matters a whole lot in the water and under it, much more than it matters in air. Not only that the greater density takes a lot more power to move it out of the way, but also that the friction of moving through water is greater. One large difference though is that water is generally not compressible,at least not like air.


Rob Spiegel
User Rank
Blogger
Re: Variety of water worthy robots
Rob Spiegel   5/2/2013 9:39:35 PM
NO RATINGS
Nice link, Ann. That robot looks almost exactly like a fish. I guess if nature has already done the engineering, why create something new that likely won't be as effective.

<<  <  Page 2/6  >  >>


Partner Zone
Latest Analysis
This year, Design News is getting a head start on the Fourth of July celebration. In honor of our country and its legacy of engineering innovation -- in all of its forms -- we are taking you on an alphabetical tour through all 50 states to showcase interesting engineering breakthroughs and historically significant events.
Software developers beware: Your open-source components may not be secure.
For companies that have gone into corporate venturing, sponsoring and nurturing startup companies, the subsequent IP transfer is tricky.
Learn how to build Raspberry Pi controllers using Python during this free Continuing Education Center class presented by Design News and Digi-Key.
Earlier this year paralyzed IndyCar drive Sam Schmidt did the seemingly impossible -- opening the qualifying rounds at Indy by driving a modified Corvette C7 Stingray around the Indianapolis Motor Speedway.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jul 6 - 10, Building Raspberry Pi Controllers with Python
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


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.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service