At what temperature will the RIMMS engine shut down?

At what temperature will the RIMMS engine shut down?

• A. 1250 TOT
• B. 1550 TOT
• C. 1400 TOT
• D. 1650 TOT

Answer: (B)

In this engine, a protective limit is set for turbine outlet temperature because excessive heat stresses turbine blades and other hot-section parts. When the turbine outlet temperature reaches the certified shutdown value, the control system cuts fuel or initiates shutdown to prevent damage and preserve engine life. For the RIMMS engine, that shutdown point is 1550 degrees Fahrenheit. Values well below that (1250 or 1400) stay within safe operation, while a higher reading (1650) would exceed the design limit and trigger protective action well before reaching that level. So the engine is designed to shut down at 1550 TOT.

In this engine, a protective limit is set for turbine outlet temperature because excessive heat stresses turbine blades and other hot-section parts. When the turbine outlet temperature reaches the certified shutdown value, the control system cuts fuel or initiates shutdown to prevent damage and preserve engine life. For the RIMMS engine, that shutdown point is 1550 degrees Fahrenheit. Values well below that (1250 or 1400) stay within safe operation, while a higher reading (1650) would exceed the design limit and trigger protective action well before reaching that level. So the engine is designed to shut down at 1550 TOT.