Photos: NASA Science and Technology Showcase
by CNET News.com | June 30, 2009, 7:01am PDT | Image 5 of 11
The Air Mechanic's Branch at NASA researches helicopter design in the 40-foot by 80-foot wind tunnel run by the United States Air Force. This working model of an ultra-light carbon fiber plane designed by the team features rotating propellers, or proprotors, for lift and propulsion.
Image 5 of 11
