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The high compression ratio in a diesel engine 'explodes' the diesel fuel, no other ignition source is required (once hot enough),Gasoline (Petrol) is an aromatic flammable compound. It's vapors burn, not the liquid.
Diesel is a combustible compound and it will combust if introduced to an open flame.
In order to get diesel to "detonate", it has to be compressed to a high degree in a contained space (I.e.: piston cylinder).
"Kinetic energy" in the form of a projectile, striking a diesel fuel tank, will not create a Hollywood style explosion.
You can get a diesel powered AFV to burn if it's struck in a way that spills diesel fuel onto the engine's exhaust manifolds or an open/existing flame. At that point, the fire will gain intensity as the fire gets hotter, igniting the diesel faster as it goes.
Hollywood bullshit aside, check some real combat footage. A large-calibre round at supersonic shockwave velocity hits with intense pressures.Tanks that "blow up" when hit are most likely to have had their magazine breached.
Diesel does not explode like gasoline and an AFV's fuel tank is not strong enough to resist the shockwave of a projectile penetrating it to the point of simulating an engine's piston cylinder.
Depending on the type of projectile striking the fuel tank, it could ignite the fuel as it showers and in turn ignite the rest of the fuel. But again, not like a Hollywood fireball.
Sigh. You really have no idea what you're talking about, do you?Don't do it, that Oklahoma terrorist used diesel, as an essential ingredient of his nasty device, its a def' flag - you've been warned.
Gasoline can contain aromatics, but it is not obligatory. Gasoline is hydrocarbon flammable compound.Gasoline (Petrol) is an aromatic flammable compound.
It can be compressed (vapor mixture with air) by an APHE explosion in an underfilled fuel tank and detonate (not burn). No fire inside (very frequently), all the shells are preserved, but the hull is destroyed, even the turret could have been blown off in a Hollywood style. It follows from the official report where dozens (or even hundreds) of the destroyed tanks were investigated.Diesel is a combustible compound and it will combust if introduced to an open flame.
In order to get diesel to "detonate", it has to be compressed to a high degree in a contained space (I.e.: piston cylinder).
"Kinetic energy" in the form of a projectile, striking a diesel fuel tank, will not create a Hollywood style explosion.
Keep in mind that gasoline (Petrol) is aromatic flammable, not combustible. The lower the level of fuel in the tank, the more volatile it becomes.It can be compressed (vapor mixture with air) by an APHE explosion in an underfilled fuel tank. No fire inside (very frequently), all the shells are preserved, but the hull is destroyed, even the turret could have been blown off in a Hollywood style. It follows from the official report where dozens (or even hundreds) of the destroyed tanks were investigated.
*sigh*Sigh. You really have no idea what you're talking about, do you?
The Oklahoma terrorist used ANFO, ammonium nitrate & fuel oil (=diesel), a common industrial explosive used extensively in quarrying etc as it's cheap and relatively safe to handle. The thing is, it's the AN that is the actual explosive that detonates. It works perfectly fine without being mixed with fuel oil, see for instance the massive Beirut disaster a few years ago, or a number of previous AN disasters.
The explosive decomposition of AN results in a surplus of oxygen. Hence mixing in a source of fuel that can react with the oxygen increases the power of the explosive. That fuel can in principle be about anything that burns and can be finely mixed into the AN. Such as more or less any liquid hydrocarbon. Fuel oil (diesel) is in practice used because it's cheap, readily available, and relatively safe to handle. It has absolutely nothing to do with any kind of explosive properties of diesel.
It can detonate as well. Should I cite numerous publications where gasoline detonation was investigated?Keep in mind that gasoline (Petrol) is aromatic flammable, not combustible. The lower the level of fuel in the tank, the more volatile it becomes.
I quoted an official document. No fire, no shell explosion, but hull is destroyed. No such effect if fuel tanks were completely filled. No such effect if pierced by a shaped projectile. Seems, that diesel fuel can be vaporized over the lower detonation limit under typical combat conditions.Diesel does not react the same way, as it's a combustible compound - 1/4 tank, 2/3 tank or full, remains the same. Diesel does not have volatile (aromatic) vapors.
Keep in mind that gasoline (Petrol) is aromatic flammable, not combustible. The lower the level of fuel in the tank, the more volatile it becomes.
Diesel does not react the same way, as it's a combustible compound - 1/4 tank, 2/3 tank or full, remains the same. Diesel does not have volatile (aromatic) vapors.
*sigh*
I am an ASE certified master tech, I have been involved in the automotive industry for nearly fifty years. As such, I *may* know WTF I am talking about.
Once again (posted previously).High explosives create a detonation with a supersonic blast wave. Fuels will deflagrate, which is basically a really fast burn. So you won't get the same blast effect explosives will produce. The only thing fuel vapour in a tank going up will create is a fireball, not an explosion.
So, as per physics and the accumulation of years of study, liquid diesel does not detonate from a projectile hit.
An official report."...24% of tanks were destroyed only due to internal explosion, and no traces of fire were found in them. Often even the ammunition was completely preserved in the stowage."
My reply was made to assertions that diesel liquid fuel explodes when hit by a projectile.
Hmmm... What about this one?whereas the other assertion does not so no one is disagreeing with you at all.
The report disagrees with this assertion stating quite clearly that the primary cause of the hull destruction was an explosion of fuel vapors in an underfilled tank, not a fireball.The only thing fuel vapour in a tank going up will create is a fireball, not an explosion.
This part of the report does not state that an internal explosion occurred due to fuel vapours exploding. It doesn't actually state what the explosion was"...24% of tanks were destroyed only due to internal explosion, and no traces of fire were found in them. Often even the ammunition was completely preserved in the stowage."
Only fuel tank explosions are considered in the report. All other reasons are listed separately.This part of the report does not state that an internal explosion occurred due to fuel vapours exploding. It doesn't actually state what the explosion was
caused by.
The diesel has other advantages. And the presence of fuel tanks in the crew compartment was the problem of the T-34 design, not of diesel tanks generally.No military is going to accept a vehicle for production with diesel if it is so vulnerable in the first place.
I guess, in 1942 Kriegsmarine submarines consumed all the diesel as before. But you can disprove my opinion with numbers, of course.Also worth noting is that Germany only decided against diesel engines for tanks as they were advised synthetic diesel would be difficult
to produce - this was the situation pre-war. By 1942 the situation had changed dramatically and moves were finally made to work
towards a full diesel changeover. By then it was too late with not enough time left for development.
"Explosion" means "no traces of fire" inside the destroyed combat vehicle.Unfortunately we seem to have a number of different definitions of "explosion" going on here.
The Soviets revealed that German gasoline tanks are not worse (at least) in sense of the fire safety.Gasoline is a lot more dangerous than many people think, so is diesel. IF it is atomized and distributed in the proper proportions.
HE projectile explodes inside the fuel tank with fuel vapors and initiate detonation of the latter, that enhances the explosive effect of the projectile. The effect was observed only for HE projectiles of caliber 76mm and larger.HE has both the fuel and the oxidizer contained in the explosive. With either gasoline or diesel if you have a few ounces distributed in a confined space (like a tank.) you have quite a bit of explosive mixture. Assuming 35 cu ft of space inside the tank you have about 2.8lbs of air or 0.56lbs of oxygen inside the tank. So the equivalent of perhaps 3/4lb of high explosive? enough to lift the turret? a turret that is 62in in diameter gets 1 1/2 tons of lift per 1lb of pressure.
A high velocity round that penetrates a fuel tank and sprays fuel into the tank's interior has the potential of creating a fuel/air bomb inside the vehicle.
The diesel fuel itself is not going to detonate inside the tank.
Highest number of U-boats in operation at one time was 118. They were not all type IX's but we can use them anyway asI guess, in 1942 Kriegsmarine submarines consumed all the diesel as before. But you can disprove my opinion with numbers, of course.