HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/2
tekochip
User Rank
Platinum
Re: How many rotors?
tekochip   4/3/2013 8:46:22 AM
NO RATINGS
Most of the inexpensive choppers are contra-rotating, they have two main rotors that spin in opposite directions, and are really stable and easy to control. Changing the speed of the two rotors makes the bird yaw, rotor speed controls lift, and there's a conventional swash plate for pitch, which is the only servo needed.


Charles Murray
User Rank
Blogger
Big problem
Charles Murray   4/2/2013 8:22:55 PM
NO RATINGS
Wow...if that last sentence is true, it's an amazing oversight on the part of the manufacturer. All of the controllers would potentially have this problem. And most of them -- at least the ones not sold to a mechanical engineer -- would have to be replaced.

Ann R. Thryft
User Rank
Blogger
How many rotors?
Ann R. Thryft   4/2/2013 2:33:55 PM
NO RATINGS
I'm curious, how many rotors does the helicopter have, i.e., is it perhaps a quadrotor/quadcopter?

apresher
User Rank
Blogger
Happy Son
apresher   4/2/2013 1:12:42 PM
NO RATINGS
Great story.  Hopefully your son also got exposed to the scientific method when you managed to find and fix this problem.

Brentlim
User Rank
Iron
Happy Son
Brentlim   4/2/2013 9:29:25 AM
NO RATINGS
Sounds like you had a son happy for an engineer dad! Good reminder how important product testing is. Perhaps it was a problem on one of several assembly lines and not all were tested?

<<  <  Page 2/2


Partner Zone
Latest Analysis
For city dwellers, finding a parking space can be a time-consuming and downright exasperating task. Now, however, engineers may have found a solution to that old urban problem.
Manufacturers have to manage a wide range of data, and unstructured data -- from PDFs to video files -- has become a big challenge as the new world of Big Data emerges.
In his keynote address at the RAPID 2015 conference last week, Made In Space CTO Jason Dunn gave an update on how far his company and co-development partner NASA have come in their quest to bring 3D printing to the space station -- and beyond.
On Memorial Day, Americans remember the sacrifices the US armed forces have made, and continue to make, in service to the country. All of us should also consider the developments in technological capabilities and equipment over the years that contribute to the success of our military operations.
Imagine if you could train it from San Francisco to New York faster than flying?
More:Blogs|News
Design News Webinar Series
5/21/2015 11:00 a.m. California / 2:00 p.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
6/11/2015 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.
Jun 8 - 12, Everything You Ever Wanted to Know about Filters
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.
Next Course June 2nd-4th:
Sponsored by Proto Labs
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