TSM - Turbine Start & Monitor

TSM unit image

The TSM brings auto-start control to turboprop, turbofan and jet engines not equipped with electric fuel valves, etc. providing a simple and consistent platform to execute start procedures from. It not only lessens operator workload, but enables start-ups using just one hand on the condition/fuel lever, while the other hand can hold the flight control stick, etc.

Initiating a start the operator is guided by two lights, the Auto-Start light and the Exceed light. The Auto-Start light not only signals start sequence activation, but also guides the operator as to when to forward the condition/fuel lever. The criteria used to determine this safe/optimum fuel introduction moment are configured specific to each engine model.

Illumination of the Exceed light on the other hand tells the operator to abort the start, which can be because the TSM predicts a hot-start to be imminent or otherwise senses the existence of an unsafe condition. Hot-start prediction takes into account the time/duration dependent limits as found in a specific engine's maintenance manual. In-flight the Exceed light also illuminates should any of the primary engine parameters exceed. The operator can then make the necessary adjustment to the power or prop lever to let the light to go out.

For normal standalone auto-starting only certain sensors need to be connected to the TSM. The unit will however accept further sensors in order to work with one or more of our VRX displays to realize full engine monitoring. This arrangement can also provide some instrumentation redundancy against a single unit failure, however rare to occur, to at least leave the operator enough engine indication to "limp home" with.

The TSM can record all engine parameters in up to 1/10th of a second sample periods. Recordings can be continuous, or triggered to only cover certain events such as parameter exceeds and start sequences.

The TSM easily retrofits to existing installations, requiring very little instrument panel alteration. If desired, manual starting ability can be retained as a backup/alternative starting method.