1 Star2 Stars3 Stars4 Stars5 Stars (Rate This)
Loading...

Do you ever wonder how the gun silencers we see in movies actually work? Well, the technique has to do with dealing with hot gas. Learn about the technology behind the devices.

When a cork pops out of a champagne bottle, a lid pops off an over-heated jar, or a bullet shoots from a gun; they all result in a sound. High pressure gas is released so suddenly that we can hear the waves of pressure it makes as the waves travels through the air.

Sparkling wine is bottled under pressure. Jars lids pop off because the air inside them heats and expands. A bullet explodes from a gun when gunpowder behind the bullet is ignited. It burns and releases gases violently and quickly. The bullet is the “lid,” sitting between the gases and the easiest point of exit from the gun barrel, and so it shoots out into the air. The gas behind it crashes into the air, making the ‘bang’ that most people associate with gunshots.

Silencers, or “suppressors,” are all about finding ways to reduce the speed, volume, and temperature of that gas. They do so using various structures. One structure is just large chamber attached to the end of the gun barrel. This gives the expanding gas somewhere to expand into. It’s a little foyer that some of the gas can mill around in, instead of shooting all of it out of the gun at once. Another is a series of small chambers, almost a honeycomb made of metal. The many chambers make the flow of gas choppy, interrupted by diversions. The honeycomb also makes the gas flow over a large, metal surface area. Metal absorbs heat very well. All the heat that goes into the metal comes out of the gas. Since heat makes gas expand, losing some heat will make it contract. That contraction means less pressure, and that means less of a bang.

But not none of a bang. When most guns fire, they create not one bang but two. The first is the expanding gas. The second is a sonic boom as the bullet breaks the sound barrier. There isn’t anything a silencer can do about that.

How gun silencers really workSome silencers, specifically the ones in movies, can’t do anything about either. Many movie silencers are just objects jammed on the end of the gun. Sometimes they’re solid, like potatoes, or sometimes they’re filled with things that supposedly are going to muffle the sound.

In the 2007 film Shooter, a silencer was made out of a can filled with socks. It would have been better if the socks had been left out, since all they would do was take up space that the gas could have expanded into. Most packing materials are useless.

The one packing material that can be helpful when making a silencer, is metal. It won’t allow the gas to expand, but it can soak up some extra heat. Steel wool, wire, filings, anything that can suck some heat out of the expanding gas.

Anyone hoping to become an assassin, one truly recession-proof job, is out of luck, though. Suppressors are a less popular term than silencer, but they’re a more accurate one. Many sites compare a suppressed gunshot to the sound of a door slamming, or a car backfiring. They can’t silently crumple a look-out while an enemy camp is asleep. The most they can do is make people in a fairly noisy area, not too close to the gun, not immediately recognize the sound as gunfire. So, if stealth is a factor, better pack a crossbow.

Source: Gizmodo.


You Can Use A Dab Of Vaseline On Your Lens To Take Vintage Style Pictures

Fujitsu LifeBook T580
You can also press the left/right arrow key on your keyboard to go to previous/next post
  On August 29, 2010(6 years, 1 month ago.)

You May Also Like:

What Do You Think?

4 Responses

  1. Tej Kohli Says:

    Nice Information , I never heard about this technology , I just saw silencer revolver in movies

    Posted on August 31st, 2010 at 2:54 AM

  2. Bitemyass Says:

    Well, where’s the technology? All I read is the theory of why they work.

    Posted on November 3rd, 2010 at 1:37 AM

  3. Whalzi Says:

    yup i thought you gonna provide some drawings….

    Posted on July 5th, 2011 at 9:14 AM

  4. StalKeR Says:

    If you use Subsonic ammo with your silencer it wont make the sonic boom.

    Posted on August 20th, 2011 at 7:18 PM

Leave a Reply




Loading Facebook Comments ...

FTC Disclosure: Some of the links of this website are "affiliate links." This means if you click on the link and purchase the item, we will receive an affiliate commission.


Recent Search

Recent Tutorials

There is a high-risk XSS Vulnerability in W3 Total Cache, and we have got the guide to the fix for you.
Check out this tutorial to know how to install Apple watchOS 3 beta certificate on your Apple Watch and start enjoying the new version.
If you are trying to jailbreak iPhone, iPad or iPod on iOS 9.2 - 9.3.3 without using a computer or Apple ID, then check this video tutorial.
Pokemon Go users are complaining about the crashing and server issues. Check out the tutorial to solve error problems and thanks us later.
Turning off Wi-Fi Assist is a great way to save mobile data since it automatically starts using cellular data when Wi-Fi signal is poor .
If you want to secure your SIM card from others using it, then check out this tutorial to know how to set up the SIM Pin code on your iPhone.
CiderTV is a great alternative to control Apple TV from the Notification Center. Check out this tutorial to set up CiderTV on your iPhone.
Are you annoyed by the split screen mode on the iPhone 6 Plus or 6s Plus? Check out this quick tutorial to turn off split screen feature.
If you could not wait to installed the iOS 10 beta version on you iPhone and now struggling for the errors, then this tutorial is for you.
Siri might not understand the question you asked. But you can use Siri by editing the text that you asked & it will give an updated answer.
Close You Have To Login
User:
Pass:
Login With »Login With TwitterLogin With Facebook