Positive VS Negative vertical g-Force Apparently this maneuver was for the first time performed in public with a propeller driven airplane by aviation pioneer Mr Jurgis Kairys during the ‘92 fiafarnborough on a Sukhoi and my fav of his filmed performances of this #Cobra version is the one he did towards a bridge over Neris river on 18th Sep ‘99 in Lithuania and not too much later, pioneer kirbychambliss was the first ever to perform it on take-off making it his signature maneuver and one of my favorite of all. 🎥 m.stenner #gForce #FORZAg #gravity #gravità #physics #fisica #StuntFlying #aviation #cobra #redbull #volare