diydrones/ardupilot — pull request #584 by ssq870424 (2013-10-01 15:52:56+00:00)
Title: a new singlecopter  airframe library

The frame is like Honeywell T-hawk.
in early 2012.01, I have try to modify ardupilot code to fly a singlecopter and succeeded. Now I think it is worth spreading.