id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
26	revoir derivée quaternion	Sanahuja Guillaume	Sanahuja Guillaume	"dans flair:
dq/dt=0.5*q*Qw

on trouve sur internet
dq/dt0.5*Qw*q

par ex:
http://www.euclideanspace.com/physics/kinematics/angularvelocity/QuaternionDifferentiation2.pdf

https://fgiesen.wordpress.com/2012/08/24/quaternion-differentiation/

etc..."	defect	new	major		core