Questions tagged [kinetic-weapons]

For questions about kinetic weapons, their uses, technology, and application. Kinetic weapons move a mass to speeds hostile to the target. That mass may be as small as an electron or as great as an asteroid, so long as the question is about the object accelerating the mass and not the mass itself.

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Are Mass Effect "style" guns possible?

In Sci Fi, the majority of weapons come in the form of either some kind of energy beam/bolt, or as testosterone-dripping slug-throwers. In Mass Effect and the Aldreaverse utilize weapons that fire ...
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-1 votes
4 answers
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How could I calculate the necessary power to kill a fictional beast?

Say we have a pterodactyl-wyvern or a huge dragon-anaconda, maybe something like a t-rex, or a sand-crocodile, or a slime--- you get the idea. Assuming one wanted to make a fictional manual with ...
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15 votes
4 answers
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Accuracy limits of Victorian-era rifles

I have a fictional character in 1870 who is a marksman of superhuman ability; basically, he doesn't need a sniper rifle with a telescopic sight, he is a sniper with a telescopic sight, and can get the ...
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0 votes
1 answer
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Can a Relativistic Kill Vehicle be a single particle?

To those that don't know what an RKV is: a projectile (could be a spaceship, could be a bullet) that moves with a significant fraction of lightspeed. Maybe even close to lightspeed. Anything it hits ...
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1 vote
3 answers
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What weapons and equipment would be best for a Dullahan in this setting?

Note: Other than a detachable head, there isn't much in common with the standard Irish myth, and this makes use of a magic system. I'm also fine with a little hand waving if I must, I would just ...
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2 votes
3 answers
160 views

Piezoelectric device for a mace

A lady warrior in this story uses two main weapons. A bow for long range A mace for melee combat This question concerns the operation of the mace. Within the head of the weapon, during any impact (...
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5 votes
12 answers
463 views

Warfare in a universe with FTL on rather fragile platforms? [closed]

How do you imagine the large picture of space warfare would shape into in a universe with the following characteristics: There is FTL, but it's just available in very large and expensive platforms, ...
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4 votes
2 answers
145 views

Can a Tungsten-rod Kinetic Strike create an EMP given enough speed?

So in my story, I have one side of the war using an orbital-based railgun to fire a tungsten rod at extremely high velocity onto a populated city. Let's say the tungsten rod is around one ton, and it'...
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5 votes
1 answer
165 views

How much power/pressure would be required for air weapons to be as deadly as fire weapons?

Ironically, it would be thought that with modern technology, the "next step" for fire weapons would mean to produce direct energy weapons such as Rail Guns, Lasers or Microwaves, however, ...
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2 votes
3 answers
362 views

Can unlimited kinetic energy be stored in superfluid helium?

Liquid helium can be in a state of superfluidity — meaning it can flow with zero internal friction. Let's assume that for whatever reason that this form of helium is present in large amounts. Could ...
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3 votes
1 answer
261 views

How would a near light speed impact on Jupiter affect the planet and the solar system? [closed]

The object was originally "fired" as a weapon used from space to hit planets.let's say it is a long cylinder with a very high density and it was accelerated at some point to 90% of C. The ...
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7 votes
6 answers
808 views

Orbital Bombardment of Airships

Imagine that you're the admiral of a fleet of warships in orbit around Saturn. You need to capture targets on Titan, the largest moon. (This could also be applied to, say, Venus or one of the gas ...
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5 votes
7 answers
1k views

Recoilless Rifles vs Bazookas against non Mechanical Targets

I need a weapon that is shoulder fired that can deal with heavy monsters such as a minotaur and the likes, but light enough so that the user can carry at least another small arm without to much hassle....
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1 vote
3 answers
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Shoulder Mounted Weapon Design in a dieselpunk/ww1 time period

In my setting a large city state has been cut off from the rest of civilization through the appearance of a large alien forest that sprouted up during the medieval times and cut off the city state ...
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2 votes
2 answers
170 views

How a kinetic strike from orbit would look like? [closed]

The impactor is a tungsten rod of 5 tons, moving at 0.015c, impacting a generic land spot on Earth. Calculator of kinetic energy outputs that this will be equivalent to ~2 Mt nuclear warhead (if I'm ...
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10 votes
9 answers
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What happens during simultaneous hits on a tank

For various reasons I have an army that uses many smaller vehicles instead of spending a lot of full main battle tanks. This army uses mostly up to 90mm* cannons on their vehicles rather than the ...
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5 votes
1 answer
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How effective would Rods from God be on an underwater target?

If I take a Rod from God, drop it on to an ocean somewhere, what exactly happens? Let's say there's a secret base about 10,000 feet or so underwater. Is it still okay?
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3 votes
1 answer
193 views

Effects of a Super High Velocity Cannon on a Planet

In the 23rd century, humans are at war with a technologically advanced alien species. Humans discovered a method of faster than light travel during early stages of this war when an alien capital ship ...
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8 votes
7 answers
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Hard sci-fi super weapons?

So in my questions about the intergalactic highway and simulated ship quarters I established a universe where the navy fights a cult of alien worshipers over star gates. 500 to 700 years in the future....
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2 votes
3 answers
181 views

Advantage of miniguns being military standard?

I'm writing a sci fi fiction based on mass effect, different from the series though. In it I've made humans terrified of an alien invasion/genocide so they focus on firepower/rate of fire or both. ...
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7 votes
3 answers
515 views

How to make pneumatic weaponry/airguns the main weapons of a miliary force?

Perhaps you know of pneumatic weapons also called airguns, but for those who don't; they're weapons that use air as propellant to launch a projectile rather than for example black powder or smokeless ...
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5 votes
2 answers
131 views

Destruction of a Trojan Asteroid by an RKV

The history During the Great War between two nations, one sent an RKV (Relativistic Kill Vehicle) towards an enemy factory as a message to show their power but not kill needlessly. The base was in a ...
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7 votes
6 answers
382 views

Weaponized Instruments

In the main palace in my world, there are no soldiers or guards, and in their place, there are musicians. This is because the musicians have instruments that double as weapons, and they have been ...
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2 votes
3 answers
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Can there be a scientific explanation for an indestructible kaiju? [closed]

Assume that the kaiju is insusceptible to all weapons but nuclear ones. What could explain its impenetrable form?
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4 votes
2 answers
136 views

Alternate power for projectile weapons [duplicate]

I am working on a series set a few hundred years in the future where fusion power is common and starships roam between planets. I am trying to think of a way to power small Arms weapons and keep them ...
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6 answers
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Shooting through the earth

Due to reasons of magic an alien god that is about to takeover the earth in one year and can only be stopped by being shot through the entire earth. Assuming modern day Earth (no magic other then ...
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2 votes
3 answers
216 views

How small and fast can a bullet go in atmosphere?

In many sci fi universes that don't have handheld energy weapons, they instead use solid projectiles that either go big (Warhammer 40k) or really small (Mass Effect). The former I have a pretty good ...
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5 votes
3 answers
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Can a coilgun be used to boost a traditionally or non-traditionally chemically powered weapon?

So, I was wondering if for small scale weaponry (150mm guns and smaller) using a coilgun to assist in the acceleration of a traditional chemically accelerated round, either while in the barrel burning ...
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7 votes
7 answers
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How can these kinetic weapons be made more plausible?

I am looking for plausible mechanisms to legitimize (or replace) the physics-based weaponry used in the fictional world of my latest story. My story utilizes a range of weapons (like Starship ...
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1 vote
4 answers
409 views

Could a steel cylinder punch through plate armor?

I want to be a bit more creative in my design of medieval weapons, and have begun looking into the creation of an Arbalest that instead of shooting traditional crossbow bolts, shoots metallic ...
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1 vote
1 answer
98 views

Feasible Sci-fi 200-300 years away weapons? [closed]

I am writing a book about an Oceanic planet about 1/4 the size of Earth, under the assumption that there was a wormhole at the beginning of the 1600s on Earth, leading to two island-nations above the ...
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5 votes
4 answers
366 views

Optimizing a relativistic anti-personnel weapon

Let's say you have a technology that lets you build a gun that can accelerate a mass up to 145 grams to a speed of 0.90 C. (Don't worry about the plausibility of this technology) The projectile can ...
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9 votes
3 answers
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Could an eruption be triggered at Yellowstone via kinetic bombardment?

While similar questions have been asked, I don't believe kinetic bombardment was brought up, with focus centred around nuclear warheads. Considering the ability for a "rod from god" to embed into the ...
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5 votes
1 answer
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how fast would a magic rail/coil gun need to fire to melt its tungsten bullet

In my story magic allows for the creation of accelerators that can multiply the speed of any object that passes through them. These accelerators allow for modified conventional weapons to fire at rail ...
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7 votes
3 answers
471 views

What is the yield of a 1kg solid concrete transporter bomb?

I want to beam into solid concrete as a bomb. I have transporters and unlike Star Trek I’m not afraid to use them. Terrorists have taken the tech and have nasty plans for us. The bomb is 1 kg sphere ...
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5 votes
2 answers
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Is there a velocity threshold that when passed would make a kinetic projectile more than just "piercing"?

As my recent inquiries have shown, when a kinetic projectile has sufficient speed, it does more than 'penetrate and perforate'. It will have somewhat of an explosive effect, right? Difference to the ...
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20 votes
6 answers
7k views

What is the maximum viable speed for a projectile within earth's atmosphere?

Assume a projectile, made of a very heat-resistant and durable material (something like tungsten), formed like a modern saboted tank cannon shot. If tungsten, like suggested, is not ideal, you can ...
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4 votes
3 answers
990 views

What would be the strongest "realistic" bow draw weight with ubertech?

I'm trying to help develop a "high tech" bow for a video game, to be used mostly by prestige soldiers with ubertech against low-tech industrial civilizations as a kind of a status game; their enemies ...
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7 votes
4 answers
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Why would non-kinetic weapons be used for orbital bombardment?

The space borne planetary invasion force is a staple of many Sci-fi genres and most space invasions face the need to destroy some, or all, ground based infrastructure from orbit in order to take over ...
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3 votes
2 answers
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Space missiles system [closed]

I have been reading lately the Honor Harrington series and I wonder how would torpedoes and missiles work in space. What Weber uses is some kind of nuclear head that pumps several lasers, does that ...
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7 votes
3 answers
4k views

Is a self contained air-bullet cartridge feasible?

In my world, there is no access to modern or traditional gunpowder. I was wondering if a dedicated technician with a modern shop (cnc machines, and a surplus of parts and raw material, etc) would be ...
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1 vote
1 answer
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Can a missile be disarmed mid-flight?

I have a humanoid creature in my world that can emit and sense waves similar to radar (sort of like a bat with echolocation) and it can also fly at supersonic speeds due to jet propulsion. Does ...
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15 votes
13 answers
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How do you make a gun that shoots melee weapons and/or swords?

In my industrial-punk-with-airships setting, I think it would be cool to have ship-mounted and personal-use ranged weapons that shoot swords, axes, glaives, or other heavy melee weapons. I'd like this ...
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11 votes
1 answer
169 views

Degradable ammunition for electro magnetic guns

Would it be possible to make ammunition for railguns and gauss rifles that would degrade over time either through a natural process or by the means of star radiation, so the missed shots don't ...
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2 votes
1 answer
579 views

Limits on EM kinetic weaponry

I am looking for kinetic armament for spaceships. With nuclear reactors providing power, there is plenty of energy for kinetic EM weapons. EM weapons come either as coil guns or as rail guns. What ...
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8 votes
7 answers
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What it takes for body armor to stop a .50 cal?

The .50 BMG is a very powerful round with a lot of penetrating power. I want to survive it. I did some research on my own, I'm just not sure how to combine these in a way to effectively stop a .50 ...
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5 votes
3 answers
564 views

Can a troll hide withstand bullets?

The trolls in my story have a very thick and nigh impenetrable skin. In the time before guns, you would need a very sharp high-grade steel blade to breach the skin and, even then, after a few hits, ...
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61 votes
8 answers
13k views

Does a grenade kill you the same way a gun does?

Disclaimer This seems a particularly stupid question, but the more I think about it, the less trivial I find it. Worldbuilding possess the most appropriate tags. It does not fit in physics-network ...
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19 votes
15 answers
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Stopping a Planet Cracker?

One of the issues with creating a model of space warfare that is both realistic and interesting is the ease with which one can destroy things using high-velocity kinetic kill vehicles (KKVs). For a ...
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4 votes
5 answers
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Ultrapowerful chemical propellant for guns

I'm building a moderately hard scifi future setting that focuses on space and land warfare and I'm trying to decide what would be the most realistic from an engineering standpoint of artillery tech ...
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