Abstract: A system for detecting a shaft shear comprises a gas turbine engine having a turbine, a high inertia rotating component and a driveshaft. The turbine drives the high inertia rotating component using the driveshaft. A first speed probe is configured to detect a first speed of the driveshaft at a first location associated with the driveshaft. A second speed probe is configured to detect a second speed of the driveshaft at a second location associated with the driveshaft. Control circuitry is configured to compare the first speed and second speed, determine if the shaft shear has occurred responsive to the comparison and generate a control signal to the gas turbine engine responsive to the determination.

Abstract: A system for detecting shaft shear comprises a gas turbine engine including at least one turbine configured to drive a fan using a driveshaft. A plurality of frangible plugs is located downstream of the at least one turbine of the gas turbine engine. The plurality of frangible plugs is configured to provide an indication of shearing of the driveshaft responsive to breakage of at least a portion of the plurality of frangible plugs caused by impact of the at least one turbine with the portion of the plurality of frangible plugs.

Abstract: A containment system for containing fragments of a burst rotor including first and second means for frangibly connecting a containment element to first and second walls, the first and second means rupturing upon being subjected to a load mainly produced by a translational motion of at least one fragment impacting the element.