Excess rotation rate protection device for aircraft gas turbine engines

摘要

The system has at least one inductive rotation rate probe (2). It also has an electronic unit (3) to control the rotation rate of the turbine shaft and also, if required, to initiate steps to reduce the rotation rate. The electric energy required by the electronic unit (3) is made available by the rotation rate probe (2). A switch off valve (4) may be provided with electric energy from the rotation rate probe (2) to reduce the rotation rate.