Chuck
Aircraft engines are subject to wear in direct porportion to the amount of heat generated and by friction caused by the number of RPM's over a given time frame.
When driving an airplane down hill I see no advantage in wearing out my engines by using unnecessary RPM when something as basic as pre planning the approach based on conditions will allow gravity to generate the velocity I require aided with a small bit of thrust from the engine/s.
By this I take it you mean that lower RPM means less wear on the engine and higher RPM means higher wear? This contradicts what Walter Atkinson, who runs the Advanced Pilot Seminars in the US, claims, namely that higher RPMs produce less wear on an engine.
Any comments?