What does detonating cord look like?
Table of Contents
What does detonating cord look like?
Detonating cord (detonating fuse) resembles safety fuse but contains a high explosive instead of black powder. The first successful one, patented in France in 1908, consisted of a lead tube, about the same diameter as safety fuse, filled with a core of TNT.
How does detonating cord work?
Detonating cord, also called Cordeau and Primacord, is a hollow cord filled with an explosive material. It is fired by a detonator and is capable of initiating the detonation of certain other explosives at any number of points and in any desired pattern.
How fast does det cord burn?
BLASTING WITH DETONATING CORD Detonating cord is a linear form of a high explosive. Unlike black powder, detonating cord contains a core of a very high-velocity explosive that detonates (rather than burns) at a speed of about four miles per second.
Can you buy det cord?
Dyno Nobel manufactures the world’s most well known brands of detonating cord (det cord), available in a wide variety of coreloads (from 7.5 to 400 gr/ft) and either a textile jacket (Primacord®) or a plastic jacket (Primaline®), for a wide variety of mining explosive needs.
What is meant by detonating?
intransitive verb. : to explode with sudden violence. transitive verb. 1 : to cause to detonate detonate a bomb — compare deflagrate. 2 : to set off in a burst of activity : spark programs that detonated controversies.
Is a detonating cord a high explosive?
Detonating cord consists of a core of high explosives, usually PETN, enclosed in a reinforced covering of various combinations of textile, plastic, and waterproofing materials.
Where is PETN used?
Pentaerythritol tetranitrate (PETN) is an explosive used as the primary ingredient in detonating fuses and as a component in some plastic explosives.
How do you know if your engine is detonating?
How is it indicated?
- Knocking or pinging sound.
- Drop in Exhaust Gas Temperature (EGT)
- Broken piston rings and/or spark plugs.
- Damage to the piston and/or valves.
Is detonation an explosion?
Discovered in 1881 by French scientists, detonation is the result of a supersonic wave initiating a secondary explosion.
How strong is PETN?
PETN is a very powerful explosive material with a relative effectiveness factor of 1.66. When mixed with a plasticizer, PETN forms a plastic explosive.
How do you fix pre detonation?
There are several ways to cure pre-ignition:
- Run higher octane fuel. Premium gas rated at 92 or 94 octane is best for an engine with a compression ratio between 9.25 and 10.25:1.
- Run the engine on the rich side.
- Try playing with ignition timing.
