How do you stop detonation?
Detonation, also referred to as knocking in gasoline engines happens when the gasoline vapor in the cylinder ignites prematurely before the piston is in an optimum position in the cylinder, usually, slightly before the piston has reached it maximum extension in the cylinder (referred to as BTDC - before top dead center). The solution is to try using a higher octane of gasoline as the higher octane slows the burning of the gasoline. If you are already using a 93 or 94 octane gasoline, take your vehicle to your friendly mechanic. As there may be other issues involved such as the incorrect timing of the engine.
Cannot determine as there are too many variables: yield of the bomb height/depth of the detonation terrain around the detonation site structures standing around site before detonation if underground detonation what the rock types are and degree of fortification of target If underwater detonation what types of ships, etc. are at what distances and depths etc.
It depends what you mean by 'better'. Lead used to be added to gasoline to stop pre-ignition or detonation (which causes engine knock or 'pinking') but it was found to have very bad side effects environmentally and physiologically. most countries have banned the use of leaded gasolines, and modern gasoline have other ways of dealing with detonation. so i guess, unless you like bad air and bad health, unleaded is best.
A knock sensor is a sensor inside an engine that detects detonation of fuel prior to the spark plug igniting the full during the cycles of the engines. Detonation at the wrong time can cause significant harm to an engine since it will cause the piston where the detonation occurred to be pushed down at the incorrect time. This can result in a catastrophic breakdown of the whole engine. A knock sensor monitors irregular detonation…
Today, if they're tested, they're usually tested by underground detonation at remote sites. In the early days of testing, they were tested by the method of delivery and detonation - air, artillery, underwater, or ground detonation. As the realization of fallout contamination became known (Alpha Radiation contamination), the tests were performed underground to localize contamination and to prevent airborne spread.