Detonation

Definition of Detonation:

Detonation is the abrupt and explosive discharge of heat energy resulting from the combustion of fuel in an aircraft engine. This occurs due to the fuel-air mixture attaining its critical pressure and temperature, which leads to a sudden and violent explosion instead of a steady and continuous burning process.

In reciprocating engines, detonation refers to an uncontrolled explosion that takes place inside a cylinder, which is in contrast to the smooth and even combustion that occurs under normal circumstances. This phenomenon is sometimes referred to as “pinging” in automobile engines and is caused by the use of low-grade fuel.

Detonation can cause significant damage to aviation and automotive engines and is therefore a critical factor to consider in engine design and maintenance. Prevention of detonation is achieved through careful optimization of fuel-air mixture, effective engine cooling, and appropriate engine design.