PX4/Firmware — pull request #1312 by LorenzMeier (2014-08-24 21:06:32+00:00)
Title: Deal with zero airspeed measurements

@thomasgubler @julianoes This should elegantly deal with zero airspeed measurements and not introduce jitter in controls. Also took out the excessive printing which by itself (stack usage, timing) is good enough to bring down an aircraft 8).