If you get a moment, do a search on the UTubze for jet engine testing. They have a few videos of chickens and the like being fired into running engines. Interesting videos.
Again, thanks. Just so you know, I'm familiar with what you're suggesting. My original "question" about testing was based on that. I'm reminded of the story about the Brits wanting to know how we tested aircraft windshields for when the plane hits birds.
Our response was we had a compressed air gun which blew chickens against the test windshields at varying velocities. The Brits tried that but were concerned that every single chicken broke the windshields. After much discussion and investigation, we finally had to tell the Brits to quit using frozen chickens.
On the cleaning question, I suppose they could just fly the thing through a couple of heavy rain clouds.
Terry, 230RN
