Can you shoot in space? The answer of
to this core question is: Theoretically yes.
Let us explain in detail: bullets also contain oxidizer in addition to gunpowder, so the triggering of the trigger in a vacuum without oxygen will not affect the firing of the bullet.
But things are not that simple, because shooting in outer space you will encounter other problems besides ignition. And one of the important ones is the temperature . It’s hard to feel when watching outer space movies. Astronauts wearing heavy space suits have never complained; But in fact, if there is nothing to shield or heat in the universe, sunlight or other rays of light will damage things. Heating, hot enough to detonate the gunpowder in the bullet.
But if the sun is completely blocked, it is likely to drop to absolute zero in the universe, which is minus 273°C, and the primer in the gun* may not even start . In addition, too low a temperature can cause lubricant freezing and embrittlement of metal parts. At this time, let alone firing, there may be problems with the gusset machine.
- Remarks: Primer is a device in firearms that is responsible for igniting propellant to drive projectiles out of the barrel.
Then if the gun parts are designed to withstand the space environment, and then the gun is shot in space, what will happen? The following are things to pay attention to before space opens.
Be careful with the bullets you shoot yourself.
Moving in the universe is perpetual, so the bullet will continue to fly after flying out. If it is a normal pistol, the muzzle velocity of the bullet is approximately between 300~400m ; if it is AK47 or a more common rifle bullet, the muzzle velocity can reach 700~ 900 meters ; If you use a high-speed rifle bullet .220 Swift, 秒速 can be as high as 1200 meters .
It’s not wrong to feel that the speed is very fast. But in fact, most objects in space are moving at a faster speed. For example, the average speed of general satellites is about 3 kilometers per second, while the average speed of the International Space Station The speed is almost 7 kilometers per second.
What’s interesting is that in the universe you only need to pick the right place, and you can even be hit back by the bullet you fired.
As long as you are in the orbit of the planet, calculate the drag caused by gravity and then fire the bullet parallel to the orbit, so that after the bullet flies out along the tangent line, it will gradually approach the orbit under the influence of gravity. If it is very, very rare and the calculation is 100% accurate, this 子弹 has a chance to come from behind you, at an astonishing speed "Return to the original owner"
The human body is invincible.
In the universe, according to Newton's third law of motion (in short, the force and reaction force), it is difficult for the person who shoots to retreat.
A set of space suit for space walk is about 120 kg. If the astronaut has a mass of 70 kg, then the object affected by recoil is about 190 kg.
If today is a common 9mm bullet fired with a pistol, the weight of each bullet is set to 10 grams, and the muzzle velocity is 300 meters per second.. According to the conservation of momentum M1V1 = M2V2, which is 10 (g) x 300 (m/s) = 190000 (g) x V2, we can get that the astronaut will fly backward at a speed of 1.5 cm per second.
This is actually quite slow, even sloths are 4 times faster than you. If you switch to the famous large-caliber pistol: Desert Eagle , a bullet weighs 19 grams, and the muzzle velocity is almost 450 meters per second. At this time, the astronaut will fly backward at a speed of 4.5 centimeters per second. In fact, after one hour, they will only move backward 162 meters.
Do nothing, if Today, the astronauts don’t have a pistol, instead use a special rifle to shoot the most powerful .950 JDJ rifle (this type of bullet) And the rifle it used was discontinued in 2014). Each bullet weighs 233 grams and the muzzle velocity is 670 meters per second. After the shot is fired, the astronaut will fly backwards at a speed of 80 cm per second, which is 2.88 kilometers per hour. This is probably a slower walking speed, but it is already a super high-speed space walk (don’t forget you It still moves in space at the same speed as the space station), and be careful not to entangle your life support system~.
Once the shot is in the wrong position in space, it will be fired at shoulder height, recoil plus torque will make you roll backwards in an invincible way. And there is no obvious subject in space. If it happens that there is no earth or space equipment as a position reference point for you, you may not even find yourself rolling.
最安全 The method of shooting in space is actually to hold the gun around the waist and fire it, that is, in the center of the moment of the whole person. But you will still fly backwards until you fire another shot in the opposite direction (but then there are two bullets roaming in space).
Have a few bases, why do you want to take a gun into space?
For decades, the Soviet Union (and later Russia) had a gun in the survival kit of astronauts. This is not an ordinary gun, but a specially designed TP-82 compound pistol that is foldable and versatile like a Swiss knife.
This gun is not designed to be used in the universe, but is a gun for astronauts to defend themselves and survive in the wild after landing on the earth, and because of this, the butt of this gun has a canvas and a mountain knife. It can even launch a distress signal. Although this gun was no longer used after 2007, it does not mean that Russia gave up on it. Later astronauts switched to ordinary semi-automatic pistols, but the purpose was still to survive and self-defense.
The above discussion sounds wonderful, and it feels useless. But in fact, the principle of firing objects in space is a very important topic for astrophysics and engineers who design satellites. This is because whether it is to solve space junk, prevent satellites from hitting the earth, or launch sub-satellites from a parent satellite, they will all face such problems.
But anyway, if you really want to threaten astronauts in the universe, there are more efficient and safer methods than taking a spacewalk with a gun and pulling it out against the opponent, such as cutting off the life support system. of.
