. Transactions and proceedings of the New Zealand Institute . of the wheel is at the circumference,therefore the greater the speed the greater is the centrifugal force of all partsof the cucumference, thus increasing the tension; the very slight elasticityof the rim thus coming into action. Aet. XVI.—Introduction of the Principle of the Gyroscope in Aerial Transit. By Henby IV.[Read before the Otago Institute, 9th October, 1877.]All our ideas of stabihty of direction and position are but relative, and thesame law which expresses that all matter moves in straight lines untildeflected
. Transactions and proceedings of the New Zealand Institute . of the wheel is at the circumference,therefore the greater the speed the greater is the centrifugal force of all partsof the cucumference, thus increasing the tension; the very slight elasticityof the rim thus coming into action. Aet. XVI.—Introduction of the Principle of the Gyroscope in Aerial Transit. By Henby IV.[Read before the Otago Institute, 9th October, 1877.]All our ideas of stabihty of direction and position are but relative, and thesame law which expresses that all matter moves in straight lines untildeflected by another force, and which regulates a planet in its path, cangive stability to an aerial machine, so that it can be propelled and steeredin any direction even against moderate winds ; indeed the most permanentthing in nature is the axis round which a symmetrical body rotates; wehave many familiar instances of the permanency of the plane of rotation,from the childs missiles, tops and hoops, then again the wheels of bicycles, !NSTITUTE,yOLXPiJI. S. VeTizea-l seciion,. , del. To iIlusirai&Faperiy MSkeif on^ Aerial^ Transit. H. Skey.—Introduction of the Gyroscope in Aerial Transit. Ill on the small scale; while on the grand scale we have the axes of the earthand all celestial orbs as examples. A smooth thin stone thrown throughthe air keeps its plane of rotation nearly constant even when a high windis blowing, the slight rotation in its own plane keeping it therein. From experiments given in a former paper; -•• it was shown that whenvery oblique planes are moved through the air with the anterior edge onlyslightly elevated, there is not then much power wasted in driving a mass ofair before them in a horizontal direction, and more than this there is aconsiderably less mass of air forced downwards, the inertia and elasticity ofthe air tending to impart great upward pressure unto the plane. In a second paper t it was endeavoured to show how very thin planes
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