During the temperature cool down cycle, what is the maximum cooling rate allowed?

The maximum cooling rate allowed during the temperature cool down cycle is 5 degrees per minute. This rate is established to prevent thermal shock and minimize the risk of structural damage to materials, especially in aerospace applications where components undergo significant temperature changes. A controlled cooling rate helps ensure that the materials have enough time to adjust to the new temperature without introducing stresses that could lead to cracking or failure.

Exceeding this cooling rate can result in negative effects such as warping, loss of mechanical integrity, and compromised safety of components which are critical in aerospace systems. Therefore, adherence to a maximum cooling rate of 5 degrees per minute is a standard practice to maintain the longevity and reliability of aircraft parts and assemblies.