�ݺ�ߣ

Fuel-air mixtures are powerful volumetric explosives (FAE) that were developed at the end of World War II. FAE may virtually use any particulate combustible such as cornstarch powder, metal powders, liquid hydrocarbons or boron hydrides and any type of combustible gases. Dispersions or mixtures of these fuels with air thermally ignite at defined stoichiometry, temperature and pressure. Deflagration of such a system may transition to detonation by a number of mechanisms effecting coherent energy release e.g. (SWAGER). However, transition to detonation of a fuel/air mixture requires supercritical size of the cloud appropriate stoichiometry, temperature and pressure of the system. Generally high temperatures and pressures further DDT and lead to reduction of critical size. Read less