HMTD is Electric Spark Sensitivity Explosive?

[makeyouall]

Hi guys,

anybody know if the HMTD is electric spark sensitive ?

Just want to know this,if so,i can make a piezoelectricity fuse .(For making the Blasting cap,the Primary)

Also what explosive is electric spark sensitive?DDNP?Others?

So if possible,we can use the piezoelectricty igniter from a gass lighter

Hope to have your suggestion,Thanks.

[death-of-light]

ap,
if your going to kill yourself using a grill lighter to set off explosives ,might as-well make a big ass bang doing it.

[MurderSkillz]

Just another job for crime scene clean up.

[makeyouall]

No no,no crime!To be straingt,i am designing a RPG,the piezoelectricity fuse is a point for me,the other point is the propellant(i do not mean i would use HMTD as Propellant),i am not going to make a real one here as in my country this is absolutely unlawful,but designing it on paper and make plan,or even experiement some parts are legal,no problem.When the societly of my country is going out of constitution control,then i would make it,and use it ,this is my plan

[willi-wurm]

ahah. and you were thinking of using HTMD as a propellant? because it has such a low detonation velocity, and wouldnt shatter your round?

you should think about using something like R candy for the rocket to get some distance. for the explosive itself you should use something that isnt so heat sensitive(sp?) also organic peroxides dont do nice things to metals.

[makeyouall]

Thanks man,i want to use it as a primary explosive in blasting cap,if it's Electric spark sensitive,then i can make a piezoelectrical fuse,then the HMTD can be ignited by electri spark,this is much more easy if it is electric spark sensitive(not fire spark sensitive,i think that is different)

[CanadianPyro]

Organic peroxides are sensitive to electric arcs.

HMTD as rocket propellant? Good luck with that...

[makeyouall]

Originally Posted by CanadianPyro

Organic peroxides are sensitive to electric arcs.

HMTD as rocket propellant? Good luck with that...

Thanks for you info,but i need to say i am not going to use it as Propellant!!Just for Blasting cap,the Primary !

[AgentApoc]

Oh I understand now, I read something about a warhead design like this before. So, you use the piezo which will activate when it hits a surface thus detonating the warhead. Of course that's what I'm assuming. Only problem with that is accidental activation when the nose bumps something.

[crazy white guy]

To everyone that says HDMT is a bad propellant, its not that bad. Its dangerous and very hard to control but the US military has developed some very good weapons with it. The 'sprint' rocket system is a good example. This along with many half-assed .50 cal rounds.

[makeyouall]

Originally Posted by crazy white guy

To everyone that says HDMT is a bad propellant, its not that bad. Its dangerous and very hard to control but the US military has developed some very good weapons with it. The 'sprint' rocket system is a good example. This along with many half-assed .50 cal rounds.

Thanks for your Info,going to do experient with that,if it can not be denotated,i think i can add some graphite powder,it can de-sensitive THE HMTD also make it much more sensitive to electrical powder

[makeyouall]

Originally Posted by AgentApoc

Oh I understand now, I read something about a warhead design like this before. So, you use the piezo which will activate when it hits a surface thus detonating the warhead. Of course that's what I'm assuming. Only problem with that is accidental activation when the nose bumps something.

Yes,dude,that's what i want to design.But,unfortunately here in my country ,i can not make a real stuff out,i can only experient some part,one part by one part,but i can not assemble them as it's against the law,

For accidental activation,i think we can make at least two security 1)Isolate the detanator in the bottom during transportation and storing,and 2)Short cut the wire in the caps during so.

[AgentApoc]

Crazy white guy, you must have a very very poorl grasp on how primary explosives work, so let me give you a little reminder. HMTD is a PRIMARY EXPLOSIVE meaning when hit with sufficient shock or ignited a DDT (deflagration to detonation transition) will occur. In some cases it is very hard to get this to occur, but HMTD will do this even when barely confined. In other words it can't be used as a propellant because it DETONATES. But, if you don't believe me please do make a few engines with it, make sure you stand real close to them and use metal casings for extra k3wl l33t rocket power though! And as a bullet propellant? Seriously? You got to be kidding me.

Also, to makeyouall. The only problem with this warhead is it's poor armour penetration ability. The whole idea behind these anti-tank rounds is to use a conical-shaped charge. With such an ignition system the warhead won't be able to reach an appropriate stand-off distance for the shaped charge. Thus using that is out of the question. If the purpose is only anti-infantry or light vehicle (cars and such) than it could work although I see reliability problems with a pressure ignition system like that.

[makeyouall]

Originally Posted by AgentApoc

Crazy white guy, you must have a very very kewl grasp on how primary explosives work, so let me give you a little reminder. HMTD is a PRIMARY EXPLOSIVE meaning when hit with sufficient shock or ignited via heat will do what we smart people like to call DDT (deflagration to detonation transition). In some cases it is very hard to get this to occur, but HMTD will do this even when barely confined. In other words it can't be used as a propellant because it DETONATES. But, if you don't believe me please do make a few engines with it, make sure you stand real close to them and use metal casings for extra k3wl l33t rocket power though!

It would self ignited when it was confined!I am going to make this experiment,I actually want to make a blasting caps with just 2 gram of HMTD,i don't know how long it can be stored,migtt just 2 months,i just very scared if it because extreamly unstable,it can react with metals,so i would put a plastic lining in the aluminium cap tube.
If it can not be usable,anyguy tryed DDNP?

[AgentApoc]

HMTD can be stored indefinatly as long as it is properly sealed and is not in possible contact with any metals. I would not use metal even with plastic lining, there is absolutely no need for metal containment. Unless of course you like getting peices of metal getting removed from you. Plastic and other things work just as well as metal for HMTD.

DDNP is an excellant primary, not to sensitive, and powerful. The only drawback is having to make picric acid for use as the precursor.

[makeyouall]

Originally Posted by AgentApoc

HMTD can be stored indefinatly as long as it is properly sealed and is not in possible contact with any metals. I would not use metal even with plastic lining, there is absolutely no need for metal containment. Unless of course you like getting peices of metal getting removed from you. Plastic and other things work just as well as metal for HMTD.

DDNP is an excellant primary, not to sensitive, and powerful. The only drawback is having to make picric acid for use as the precursor.

Thanks Dude,for your information.But i think with a metal confinement,the cap would be much powerful.
Another problems with making a caps with this,is the fuse,if we just put a wire in it,then the wire is metals,which means making this kind of problems.I don' t know what metals can not react with it,nickel?

[death-of-light]

ok,so the primary for your cap is heat sensitive ,so take and pack that into your casing ,take a piece of tissue paper and stuff in now add gun powder as an ignition source.

now it should be .. bottom layer hmtd or whatever the fuck you decide to use ,
second layer is tissue paper ..
third is gun powder with the fuse or igniter(sp) in it.

again this is most likely to kill you if you use a metal casein but it is late and i stopped caring at midnight.

[MurderSkillz]

As to what Agent was saying about hmtd as a propellant he is perfectly right. Think of it this way. A low explosive such as flash powder can't even be used as a propellant so what makes you think primary's can?
Put some hmtd or flash powder in a bullet and fire it and see what happens.
Give us the results your next life around...

[CanadianPyro]

Originally Posted by crazy white guy

I am not claiming to know my shit. I have seen in being used in the 'sprint' rocket system in a discovery channel documentary about pseudo future weapons.

HMTD is not and never will be used in any rocket systems. It's a primary high explosive, any attempt to use it for anything but a primary charge on an explosive warhead would fail miserably. On top of that, the military doesn't even use HMTD for its only useful purpose because of the inherent instability of organic peroxides. You heard wrong.

The .50 cal rounds using it aren't fielded but WERE developed. Popular mechanics magazine had an article about cool weapons that you never hear about. One of them was a 50cal rifle that looked like an RPG with two .50 cal barrels.

If such a weapon was 'developed', there's a reason it was never fielded. High explosives do not make good propellants. They generate tremendous pressures very quickly, which destroys gun barrels and rounds. Traditional smokeless powders are designed to produce constant, relatively low pressures throughout the duration of the round's travel down the barrel. This accelerates the round to high velocities without destroying the gun.

The reason its mention is that theoretically it could propel a 200g tungsten/steel round at 3000m/s+ which of course didn't prove to be much faster than the common .50 cal rifle round.

Traditional .50 caliber rifle rounds have a mass of about 55g, and a muzzle velocity of about 3000ft/s. A 200g round traveling at 3000 meters per second has about 32 times the kinetic energy. Quit making up BS.

The reason nobody cares, since its effectively a rocket that uses a high explosive as a propellant, its virtually impossible to pack the propellant in a way that it would have a balanced flight.

Uh, compressing HMTD increases the detonation velocity, which would make its use as a rocket propellant even less viable (If that's even possible).

With HE, the explosive doesn't want to go evenly through a small pathway.

The understatement of the year. It's nearly impossible to generate massive volumes of gas in a few microseconds and direct it 'evenly through a small pathway'.

So it does work, but there are a long list of reasons why its not safe nor cost efficient.

No, actually it won't work. Primary high explosive does not = rocket propellant, no matter how you look at it.

[X-ray Cat]

Then again Nitro Glycerine and Nitro Cellulose have also been used as propellants.. together with many other high explosives.

Haven't researched anything about primary's or a mix of these substances being used as propellants but Nitro Cellulose is also said to DDT (that's according to powerlabs: " It is, in fact, one of the most energetic deflagrants known, capable of DDT (Deflagration - Detonation Transition) with 123-147% the explosive strength of TNT when detonated at 7300 meters per second (Nitrocellulose (13.35% N) max density 1.2g/cc)."

So I wouldn't be stunned if there actually would be use for primary's. Still I have to admit that I am also pretty sceptical about the use of this, but I'm not saying it is impossible.


EDIT:
On just the first primary I tried to research on google I found that DDNP is being used as a propellant:
DDNP propellant - Google zoeken
with a little side note that this is some diddelystrange outerspace project satelite propulsion technique. Articles state that these substances are pretty difficult to use as a propellant as it's not that easy to control the reaction. Also unwanted ignition due to the sensitivity of the substance is one of the hazards. DDNP is made "spherical" in this experiment, meaning the crystaline structure is made in a spherical form I believe.

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