3 ms·
Small nitpick but while aircraft engines cannot catastrophically fail at 460F, no one should be flying them that hot. Its basically guaranteed to shorten the TB
by maxcan 5y ago
Small nitpick but while aircraft engines cannot catastrophically fail at 460F, no one should be flying them that hot. Its basically guaranteed to shorten the TBO on the engine that way.
When I was flying a turbocharged cirrus (notoriously hot running engine) we always kept the cylinder heads to 380F. It limited our climb performance but was so much better for the engine.
- sokoloff 5y agoI agree. I use 380°F as my soft limit for a TNIO550B and take more aggressive action at 395°F. Nevertheless, it’s a certification requirement that the engine have appropriate detonation margin at the manufacturer’s declared CHT redline and TCM/CMI has chosen to put their redline around 75°F higher than I’m comfortable in normal operations.
- maxcan 5y agoI just went under contract for my first turboprop.. the numbers there are nutty. The engine can sustain 840C, it can go to 870 for less than 20 seconds and it can even sustain 1000C for up to 5 seconds without triggering any kind of exceedance.