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Of course. It has been done. Depends on the failure mode, of course. There
are some failure modes that take a long time to develop that give early indications, and some that don't. A ton of work has been done in this area for military jet engines. Seeded fault test data is the key to this. Unfortunately, that might mean wrecking a bunch of engines to get the data. It's not a project for the average home-builder. Personally, I wouldn't bother trying to get a vibration caution together for a home-built. Doing right would be just way too expensive. It would be cheaper to just buy something that's turbine-powered and get rid of the hazards that way. Besides, a huge number of failure modes already show up in CHT's, EGT's, RPMs, etc. You have to weigh the cost of covering additional failure modes against the hazards. This is really a job for engine manufacturers. Additionally, you have to take complexity and reliability of the sensing and processing into account. A monitor that is always going haywire on you would be worse than nothing at all. I'm actually looking at some stuff like this for possible inclusion on a future project right now for a different type of powerplant. If you can reliably predict RUL (remaining usable life) for a critical component, it could be possible to reduce the amount of redundancy in a complex system and rely on health monitoring functions to let you know when it's time to replace the part. PHM (prognostics and health management) has been a big focus in the military aircraft world in recent years. I'm hoping that some of this technology will trickle down to us in the GA world. Hmm...maybe I should get with an engine manufacturer and work something out... SO, how much would people pay for an engine health monitoring system package as an option for a new engine (i.e. one of the new generation...maybe a DeltaHawk)? My guess is that it would be too expensive to ever sell. Pete "LCT Paintball" wrote in message news:ipA0e.102105$Ze3.20828@attbi_s51... Are you suggesting that a bad engine will give clues to it's demise enough in advance that you could actually do something about it? Clues that a monitor could pick up on, but an experienced pilot wouldn't? |
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