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
Adam Berger hacked a computer keyboard into a mini key-tar to play with his band.
Altair has released an update of its HyperWorks computer-aided engineering simulation suite that includes new features focusing on four key areas of product design: performance optimization, lightweight design, lead-time reduction, and new technologies.
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
In a line of ultra-futuristic projects, DARPA is developing a brain microchip that will help heal the bodies and minds of soldiers. A final product is far off, but preliminary chips are already being tested.
If you're planning to develop a product that uses a microcontroller, you'll want to take note of next week's Design News Continuing Education course, "MCU Software Development A Step-by-Step Guide."
More:Blogs|News
Design News Webinar Series
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
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 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.
Sep 22 - 26, MCU Software Development A Step-by-Step Guide (Using a Real Eval Board)
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: September 30 - October 2
Sponsored by Altera
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