Aztec Driver
Line Up and Wait
So as I go along studying for the next written, I come along a bit of information that seems contradictory to everything I was ever taught on engine wear.
I was always taught to avoid low rpms with a high MAP, and the reason has always been the resulting high pressures developed in the cylinders. Reasonable, straightforward, and understandable.
Then I come across the following statement and actual question on the written test:
Under normal operating conditions, the most severe wear, fatigue, and damage to high performance reciprocating engines occurs at high r.p.m. and low manifold pressure.
Unfortunately, there is nowhere that I can find an explanation for it. It is something that we all do on approach to landing every time we fly. Why would a low power condition result in more wear?
I was always taught to avoid low rpms with a high MAP, and the reason has always been the resulting high pressures developed in the cylinders. Reasonable, straightforward, and understandable.
Then I come across the following statement and actual question on the written test:
Under normal operating conditions, the most severe wear, fatigue, and damage to high performance reciprocating engines occurs at high r.p.m. and low manifold pressure.
Unfortunately, there is nowhere that I can find an explanation for it. It is something that we all do on approach to landing every time we fly. Why would a low power condition result in more wear?