Shaft Horse Power (SHP)
The SHP indicator is a form, fit, and increased function replacement for the existing electromechanical item. The SHP indicator is a COTS design based on the proven IS&S P/N 9D-80614 Turbine Inlet Temperature Indicator. The SHP provides indication of shaft horsepower at a constant 13,820 RPM. The indicator is highly readable utilizing both pointer, and LED counter. A forward looking photocell is mounted to the dial facilitating automatic adjustment of the LED intensity in response to changes in the ambient light level. The indicator is compatible with the existing ‘phase displacement’ sensors and indicator mating connectors. The indicator provides an ARINC 429 digital data output to an engine health monitoring system, and stores in non-volatile memory conditions of ‘over power’,and ‘over speed’ events.