On August 12, electrical/aerospace engineer and helicopter pilot Pascal Chretien took to the air in the world's first untethered, fully electric manned helicopter flight in a prototype machine that he designed and built almost entirely by himself within a 12 month development period. In his 2 minute, 10 second test flight, Chretien beat aviation giant Sikorsky into the record books...
...Chretien was able to achieve an 87.5% energy efficiency between the battery terminals and the rotor shafts...
link-->http://www.elektor.com/news/world-s-first-untethered-manned-electric.1959672.lynkx?utm_source=UK&utm_medium=email&utm_campaign=news (http://www.elektor.com/news/world-s-first-untethered-manned-electric.1959672.lynkx?utm_source=UK&utm_medium=email&utm_campaign=news)
Vive la France!
...Thane Heins version anyone? ;)
cordialement
np
http://docsfreelunch.blogspot.com (http://docsfreelunch.blogspot.com)
I've always been struck with the simplicity of
mechanisms in model helicopter craft. He seems
to have borrowed from some of these ideas.
I like the auto-gyro like control set. Also, any
computer flight control algorithms *start out*
more basically for helicopter then a trajectory
controlled one for a winged aircraft.
:S:MarkSCoffman