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
Industrial trade shows, like Design News' upcoming Pacific Design & Manufacturing, deserve proper planning in order to truly get the most out of them as marketing tools. Here's how to plan effectively.
Take a peek into the world of a test engineer – and then tell us about yourself! We want to know what part each of our readers plays in the wonderful umbrella known as design engineering.
On Sunday, when more than a hundred million Americans turn on their televisions to watch the Super Bowl, they might consider first giving thanks to a polymer known as polybutadiene. .
Design News is pleased to present the finalists in the Design Tools - Hardware & Software category of our 2016 Golden Mousetrap Awards.
The series now can interface with a wider array of EtherNet/IP-compliant hardware across many industrial sectors, including factory automation systems, plastic injection molding apparatus, and materials-handling equipment.
More:Blogs|News
Design News Webinar Series
1/28/2016 11:00 a.m. California / 2:00 p.m. New York
12/8/2015 11:00 a.m. California / 2:00 p.m. New York
2/18/2016 11:00 AM PT | 2:00 PM ET
2/24/2016 11:00 AM PT | 2:00 PM ET
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 11 - 15, Designing ARM Devices Using Segger Tools
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9


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 © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service