Frank Piasecki, the developer of the tandem rotor helicopter, designer of the H-21 'Flying Banana' and the country's first licensed helicopter pilot passed away on Monday. Didn't realize his lie story was so interesting.
http://www.nytimes.com/2008/02/15/business/15piasecki.html?_r=1&ref=business&oref=slogin
http://www.latimes.com/news/printedition/california/la-me-piasecki14feb14,1,4062420.story
The Flying Banana, the Phrog's older brother:
The X-49A Speed Hawk, his latest design:
http://www.nytimes.com/2008/02/15/business/15piasecki.html?_r=1&ref=business&oref=slogin
http://www.latimes.com/news/printedition/california/la-me-piasecki14feb14,1,4062420.story
The Flying Banana, the Phrog's older brother:
The X-49A Speed Hawk, his latest design: