if one motor fails on a quadcopter, it can be saved [1] ... so that might increase reliability when compared to an helicopter. [1] http://diydrones.com/profile

if one motor fails on a quadcopter, it can be saved [1] ... so that might increase reliability when compared to an helicopter. [1] http://diydrones.com/profiles/blogs/new-algorithm-can-save-a-quadcopter-after-one-motor-prop-failure http://diydrones.com/profiles/blogs/new-algorithm-can-save-a...