Vectors and 3D Models
Local Search - Hobbies
Weather Information
Get the App for Smartphones and Tablets

Go Back


WhmSoft Free Articles Directory
Free Articles for Reprint
Free Articles to Publish
Free Articles for Newsletters
Videos to Watch


Page Generation Date and Time:
08/24/2017 10:49:07

 
Free the Animation VR / AR
Play to reveal 3D images and 3D models!
   
 
vlrPhone / vlrFilter
Project of very low consumption, radiation and bitrate softphones, with the support of the spatial audio, of the frequency shifts and of the ultrasonic communications / Multifunction Audio Filter with Remote Control!



 
 
Alexa Data
 

Go To Articles Directory Home Page

To get the current article, - See Below (at the bottom of the page) -.
For top news titles, see below.
Web sites and videos listed in this page are frequently updated.
If you find that this page is useful (quality of web sites, images and videos, ...), you can add it to your favorites.
Bookmark Page !

Tell a Friend:



With your mobile phone (WAP / I-Mode / iPhone / PDA), for free:
The Top News - http://www.whmsoft.net/services/wap/news.php
The Daily Files - http://www.whmsoft.net/services/wap/get.php
All the Directory Files - http://www.whmsoft.net/services/wap/choose.php

Web version of feeds:
Podcast Music - http://www.whmsoft.net/services/web/wpodcast.php
Daily Files - http://www.whmsoft.net/services/web/wget.php

You can play the Guitar Drum Revolution game (flash game) by following the link below:
Play Guitar Drum Revolution Game


You can play free online games (flash games) by following the link below:
Free Online Games

Play the samples below:
ToasterMetal Slug RampageCauchemars Úpisode 1Blackjack LFlying Fish

You can view the people (celebrities) news and the front page news (with videos, images and constant updates) by following the link below:
View Recent News
or by visiting the WhmSoft Service blog:
News Photos Slideshows


Article Keyword Videos to Watch
Hobbies
Click on the image to start the video.



Related Topics
Images - Links - Articles

hobbies
hobbies for women
hobbies for men
hobbyist
hobbies for teens
hobbies for couples
hobbies in spanish
hobbies for girls
hobbies for kids
hobbies on resume
Lyon hobbies
Lyon


Related Images



Article Category Videos to Watch
Hobbies
Go to the Videos Pages


History of Radio Controlled Model Helicopters

Although experiments with rotary winged aircraft may be traced back to Leonardo da Vinci, successful flights were not achieved until the 1930s, and it was not until 1941 that the first practical, full size helicopter was built by lgor Sikorsky. Model enthusiasts are notably quick to emulate full-size aviation achievements, but were not as successful with rotary wing aircraft, and it was not until 1968 that the first fully controllable R/C model helicopter appeared, built by Dr. Dieter Schluter of West Germany.

Many modellers were convinced that the single rotor autogiro would be an easier subject to tackle than the helicopter and were conducting their experiments along these lines, but in fact the first really successful British R/C autogiro, a semi-scale model of the Wallace Autogiro, was first flown in 1978, ten years after the first appearance of the R/C helicopter. Designers and manufacturers the world over were quick to take advantage of Schluter's success and, In the early 1970s, model helicopter kits were on sale in the model shops.

In order to appreciate the reasons for the slow development of the model helicopter, at least a few of the problems which faced the pioneers must be considered. These problems were many and complex, for instance in order to achieve fight with any heavier-than-air machine, the lift force generated by its airfoils must overcome the aircraft's weight. In the case of a conventional aircraft this is achieved by its forward speed through the air which flows across its airfoil-sectioned wing, causing a speeding-up of the air, and there by a reduction in pressure, over its upper surface. At the same time, pressure increases across its under- surface of the wing.

The helicopter generates lift by the movement of its main rotor blades through the air as its rotor turns. The blades have to be moved at high speed and at a comparatively high angle of attack in order to produce sufficient lift to raise the model into the air. Weight is critical and experimenters who discovered that their chosen engine had insufficient power to produce the required lift were faced with a vicious circle. Fitting a larger engine to increase the available power also meant an increase in the weight to be lifted.

Bigger engines require more fuel and more weight! Increasing the angle of the rotor blades in the airflow produces more lift, up to a point but this also increases the drag of the blade, which now requires more power to move it at the required speed. All problems were eventually overcome and the fully controllable R/C model helicopter had arrived.
There were, however, no short cuts in its development: engines, drive gears, rotor blades, control methods, etc all had to follow a similar design to full-size helicopter and be built to the same exacting standards or perhaps closer to the mechanism design of the full-size helicopter.

So how difficult is the model helicopter to control in fight? Well, it has been described as similar to balancing a steel ball on a knife edge whale riding a bicycle! more on that when you visit Model Aeronautics for Dodos by following the link in my resource box.


About the Author: Manolito Montala was a RC model airplane enthusiast and he also have a degree in Aeronautical Engineering. He is also a CAD Engineer and a webmaster. You will find many more topics on rc model helicopters by visiting Model Aeronautics For Dodos.




Recommended Web Site(s):

Easy Articles Home Page - Articles Directory

Recommended WhmSoft Web Sites, Feeds and WAP Address:

WhmSoft Software Home Page - Software
WhmSoft Services Login Page - Music and Images
WhmSoft Moblog Home Page - Blog - Photo Gallery
WhmSoft Free Online Games Home Page - Flash Games
WhmSoft Services RSS Feed - Daily Music, Image and 3D Flash Animation
Classical Music with Drum RSS Feed - MIDI and MP3 Files
Classical Music with Drum Podcast Feed - MP3 and MP3 Files
WAP / I-Mode / PDAs - Daily Music, Image and Flash Animation

Home Pages:

WhmSoft Free Articles for Reprint Home Page
WhmSoft Services Home Page - Music and Images
Copyright (C) 2006-2017 WhmSoft - All Rights Reserved.