CTR- In your post of March 7, you voiced concern about
"momentary engine failure" when the S-97 would be flying close to ground level. What type of event do you see causing a momentary engine failure? All of the flight critical systems/components in a rotorcraft drivetrain are designed for a level of operational fault tolerance that takes into account operating conditions and crew safety.
If you have time I'd recommend reading the RFP solicitation docs for the ITEP engine. Lots of stuff on what the Army wants with regards to the engine FMEA (Failure Modes and Effects Analysis) and identifying Critical Items.
https://www.fbo.gov/utils/view?id=91...274ed48b9acad6
https://www.fbo.gov/utils/view?id=e2...e8fea63b103d57