| 摘要 |
The disclosure illustrates an overspeed cutoff valve for a gas turbine engine. The valve has a rotatable base incorporating a Rolamite device in which a pair of rotatable elements and an S-shaped band are biased toward the axis of rotation of the base. At a predetermined R.P.M. the rotatable elements displace outwardly so that one of the walls which guides the rotatable elements may pivot and displace a valve element to a cutoff position.
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