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
With Radio Shack on the ropes, let's take a memory trip through the highlights of Radio Shack products.
We Have FPGAs with On-chip MCUs, but How About MCUs with On-chip FPGAs?
Polish design firm NAS-DRA has proposed parasitic robotic drones that capture carbon dioxide from the air during the day and release it at night to plants growing on their wings.
Computer security firm Norton has partnered with clothing company Betaband on a pair of jeans that will keep your RFID-tagged credit cards and documents safe from wireless theft.
With erupting concern over police brutality, law enforcement agencies are turning to body-worn cameras to collect evidence and protect police and suspects. But how do they work? And are they even really effective?
More:Blogs|News
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 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.
Dec 15 - 19, An Introduction to Web Application Security
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


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