![aircraft design - Why do helicopters need two pedals? Why is one not enough? - Aviation Stack Exchange aircraft design - Why do helicopters need two pedals? Why is one not enough? - Aviation Stack Exchange](https://i.stack.imgur.com/ci4hH.png)
aircraft design - Why do helicopters need two pedals? Why is one not enough? - Aviation Stack Exchange
![University of Maryland Students Close in On The Human-Powered Helicopter Prize | Air & Space Magazine| Smithsonian Magazine University of Maryland Students Close in On The Human-Powered Helicopter Prize | Air & Space Magazine| Smithsonian Magazine](https://th-thumbnailer.cdn-si-edu.com/krFEZFcm_Ydr-5aHz7duJC1JL3A=/800x450/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/Pedal-Power-Henry-631.jpg)
University of Maryland Students Close in On The Human-Powered Helicopter Prize | Air & Space Magazine| Smithsonian Magazine
![Unapproved locking of pedals caused SC police chopper crash, investigators find | National and World News | postandcourier.com Unapproved locking of pedals caused SC police chopper crash, investigators find | National and World News | postandcourier.com](https://bloximages.newyork1.vip.townnews.com/postandcourier.com/content/tncms/assets/v3/editorial/c/4d/c4d2cd54-985e-11e9-acb5-c3565ded306a/5d13ecda5881c.image.jpg?resize=375%2C500)
Unapproved locking of pedals caused SC police chopper crash, investigators find | National and World News | postandcourier.com
![Dinosaurs and Giant Butterflies [1493 – 1907] - The Legacy of Leonardo DaVinci | helicoptermaintenancemagazine.com Dinosaurs and Giant Butterflies [1493 – 1907] - The Legacy of Leonardo DaVinci | helicoptermaintenancemagazine.com](https://helicoptermaintenancemagazine.com/sites/default/files/catalog_images/2010_10/201010__Page_28_Image_0001.jpg)
Dinosaurs and Giant Butterflies [1493 – 1907] - The Legacy of Leonardo DaVinci | helicoptermaintenancemagazine.com
![Ponam SN-1 Helicopters Flight Rudder Pedals Flight Sim Hall Sensor, Black Flight Pedal Video Game Controllers (Damper Version) : Amazon.co.uk: PC & Video Games Ponam SN-1 Helicopters Flight Rudder Pedals Flight Sim Hall Sensor, Black Flight Pedal Video Game Controllers (Damper Version) : Amazon.co.uk: PC & Video Games](https://m.media-amazon.com/images/I/51SZEQXCuTL._AC_UF894,1000_QL80_.jpg)