How do you calculate detonation velocity?
The formula is: D = a + bρ (1.1) 2 Page 13 It is suggested that the density be within 0.85 of the TMD for this equation to be accurate within 10\% to 15\%. One method set forth by Kalmet and Jacobs [9] uses a specific hierarchy for the detonation products to estimate detonation velocity.
How explosive is acetylene gas?
Acetylene is highly unstable. High pressure or temperatures can result in decomposition that can result in fire or explosion. There are several documented explosions that have occurred due to the buildup of acetylene vapors inside of a vehicle that were triggered by a spark from the vehicle’s electrical system.
What explosive has the highest detonation velocity?
Octanitrocubane
Octanitrocubane has a detonation velocity of 10,100 m/s, making it the fastest known explosive. Small amounts have been synthesized in the laboratory, but not enough for performance testing as an explosive.
Does acetylene detonate?
The fact that acetylene will detonate at such a low pressure is of considerable significance to the chemical industry, where large quantities of the gas must be stored and handled. gas or gas mixture are wider than the detonation limits.
What is detonation in aviation?
Federal Aviation. Administration. Detonation. Detonation – Detonation, as the name suggests, is an explosion of the fuel-air mixture inside the cylinder. It occurs after the compression stroke near or after top dead center.
How fast is a high explosive?
High Explosives: A high explosive is any chemical mixture that detonates with a reaction velocity over 5000 feet per second.
What happens to acetylene above 15 psi?
Acetylene will not explode under low pressure at normal temperatures. However, it becomes unstable and spontaneously combustible when compressed to a pressure over 15 psi. Beyond 29.4 psi, it becomes self explosive, and a slight shock may cause it to explode even in the absence of air or oxygen.
What is the detonation velocity of dynamite?
Straight Dynamite – Nitroglycerin in an absorbent, with velocities between 10,000 and 20,000 feet per second. This dynamite is the most sensitive of all commercial explosives.
What is detonation in an aircraft reciprocating engine?
Detonation – Detonation, as the name suggests, is an explosion of the fuel-air mixture inside the cylinder. It occurs after the compression stroke near or after top dead center. During detonation, the fuel/air charge (or pockets within the charge) explodes rather than burning smoothly.