can do something that nothing else can do

They can pick up and drop off anywhere

HomeHome

button 2Inventors

button 2Functions

button 2Appearances

button 2Techniques

button 2Disadvantages

Disadvantages of the Sikorsky's design:

 
  1. Can only lift a load from one point directly beneath their center of gravity, which make carrying several loads underneath all at once difficult.
  2. If you want to lift a multiple load you will need a completely different motor layout

 

More Resources:

http://science.howstuffworks.com/helicopter3.htm

www.piasecki.com

www.centennialofflight.gov/essay/Rotary/Piasecki/HE4.htm

www.sikorskyarchives.com/index.html

lhttp://www.sikorsky.com/details/0,9602,CLI1_DIV69_ETI683,00.html

 

 

 

 
Disadvantages of the Frank Pierre Piaskecki's design:
  1. Can lift more than one object at the same time and deliver it separatley
  2. Very complicated massive machine.
  3. Enormous amount of maintenance

Game

Helicopters are very complicated machines