What is the maximum exhaust gas temperature for APU operation?

The maximum exhaust gas temperature for APU operation is 680 ºC. This temperature limit is crucial for ensuring the safe and efficient performance of the auxiliary power unit (APU). Operating within this temperature range helps prevent damage to the APU components, particularly the turbine and combustion section, which can become compromised if exposed to excessive heat.

Maintaining the exhaust gas temperature within specified limits also ensures optimal fuel efficiency and reduces emissions, which is vital for both environmental considerations and compliance with aviation regulations. Understanding this limit is essential for operators and maintenance personnel involved in the C-130J APU operation and management, ensuring that the APU can perform its function of providing electrical power and bleed air while maintaining the integrity and safety of the aircraft systems.