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Introduction and methodology
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Maneuvering Energy Retention (MER) is one of the hidden, but important, characteristics of an aircraft. It could be why you really enjoy flying an aircraft when its paper stats aren't impressive.
This spreadsheet aims to put a number on MER for propeller driven aircraft in War Thunder.

To do that, every aircraft will start the test at 100m and at 550km/h and will complete a 360° turn, and the difference between start energy and end energy will be the energy lost during the turn.
Aircraft which lose less energy have better MER. Aircraft will start with the fuel amount closest to 20 minutes, and best Manual Engine Control settings regardless of overheating.
Starting the test at 550km/h allows the evaluation of MER on a range of speeds commonly encountered in combat.

Examples of these tests can be found on Adam514's YouTube channel.

Author: Adam514
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