Halo Feats and Discussion Thread

[Papa Nier]

Curious, how do we view spartans being able to harm and defeat each other in HtH?

In Halo 5 Locke was able to crack Master Chief’s visor, both had their Mark VI GEN 2 armor. Energy shields weren't a thing in their Mark IV armor. In this old armor Master Chief was able to tank a nearby nuke, and other Spartans are able to tank direct hits from Wraith mortars. In-game with energy shields it takes two to three hits to KO a Spartan, Elites, and Brutes. Sounds like their durability without an energy shield is city block level.

 

[Papa Nier]

The layout and specs of the UNSC Infinity ship.

Spoiler: UNSC Infinity Layout & Specifications

Spartan-IV’s augmentations using the technological development of Spartan-I and Spartan-III programs melded with the best qualities of Spartan-II's education program.

Spoiler: Spartan-IV's augmentations

Spartan-IV's physical fitness and training. They can lift Warthogs, bend steel, and shatter concrete. They only need two hours of sleep a day, can jump several meters, run 40km/h via 24.9 mph and survive in space for five minutes without armor. They are trained in several fighting styles, such as Aikido, Jiu-Jutsu, and Krav-Maga. They have enhanced muscle memory by learning new fighting techniques by observing. They are trained in UNSC weapons, Covenant weapons, Forerunner weapons, and Brute weapons.

Spoiler: Spartan-IV's physical fitness and training

Spartan's can improve their combat training with War Games simulations. It seems to imply that War Games is Multiplayer Mode.

Spoiler: War Games

 

[Papa Nier]

Some weapon and vehicle stats.

Combat Knife, Energy Sword, Gravity Hammer & Lightblade

Spoiler: Melee Weapons

Magnum, Plasma Pistol, Assault Rifle, Plasma Rifle, Spike Rifle & Suppressor

Spoiler: Infantry Weapons

Sniper Rifle, Focus Rifle, Rocket Launcher, Fuel Rod Cannon, Brute Shot & Incinerator Cannon

Spoiler: Heavy Weapons

Warthog, Ghost, Scorpion, Wraith, Mammoth & Scarab

Spoiler: Ground Vehicles

Wasp, Banshee, Pelican & Phantom

Spoiler: Air Vehicles

 

[Maddie]

Some Revised Calculations for Mark VI

When he jumped from the CAS Carrier in Halo 2:

Spoiler

Watch YouTube & Vimeo videos frame by frame | Watch Frame by Frame

Watch Frame by Frame allows you to watch YouTube and Vimeo videos frame by frame and in slow motion.

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2:25:47 to 2:32:21 = 6.74 seconds

CAS Assault Carrier = 2118 metres = 182x399 pixels = 438.548743 pixels

Panel Height = 531 pixels


2atan(tan(35deg)*(438.548743/531)) = 1.04861545 rad

Angular Size Calculator

= 1831.2 meters


Length = 1029x397 pixels = 1102.9279 pixels = 5347 meters

2atan(tan(35deg)*(1102.9279/531)) = rad

= 1838.2 meters

1831.2 meters/6.74 seconds = 271.691395
1838.2 meters/6.74 seconds = 272.72997

16,656,629 joules to 16,784,216 joules = ~16.72 megajoules

Master Chief tanking that Wraith:

Spoiler

Combined Gas Law Calculator

Try this combined gas law calculator to determine the basic properties of the most common thermodynamic processes.

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Initial Air Parameters

-14.696 psi air pressure
-Kill radius is 20 meters or 16,755 cubic meters
-Room temperature is 293 kelvins

Temperature change to 5778 kelvins because Wraith is described as a mini-sun

= 289.8 psi air pressure
= 79493582953 joules (19 tons of tnt) for Wraith power

Inverse Square Law = I = P/(4π•r²)

Chief was 13 meters from the center of it

19 / (4pi * 13 meters ^2) = 0.116305535 tons of tnt per (square meter)

Chief is ~2.52 m^2, divided by 2 is 1.26 m^2

0.116305535 tons of tnt per (square meter) * 1.26 m^2 = 613.144172 megajoules

"He had made it no more than thirteen meters when the mortar round slammed into the opening, sending a wall of concussion and heat that drove him to his knees and caused his shields to overload and drop."

limit on his shields

And for tanking 343 Guilty Spark's laser:

Spoiler

Well to be clear it wasn't a full powered one because it would have instantly vaporized Johnson, so I will instead assume it was enough to melt through Johnson's battle dress. I will assume it's made of Dyneema.

https://pelicanrope.com/content/PDFs/Dyneema-Comprehensive-factsheet-UHMWPE.pdf

https://www.sciencedirect.com/topics/engineering/dyneema

Heat capacity of 1850 joules/kilogram*kelvin

0.98 g/cm^3

Monitor is 23 inches apparently

322 pixels = 23 inches
104 pixels = 7.43 inches

= 279.7 cm^2 blast area

BulletProofME.com Body Armor - Quick Answers to FAQs

Quick answers to Frequently Asked Questions.

www.bulletproofme.com

Assuming a thickness of Johnson's armor of 8.5 mm


279.7 cm^2 * 8.5 mm = 237.74500 milliliters * 0.98 g/cm^3 = 232.9901 grams

I will assume the beam went at 15,000 kelvin given 343 Guilty Spark is a high level ancilla who should have lasers similar to Onyx Sentinels which are that hot

What Is the Ideal Room Temperature During Winter? | Edwards Royal Comfort

Record low temperatures and wind chills can make your house cold in the winter. But before you turn up the thermostat a degree or two, remember that a couple of degrees could make a big difference on your utility bill. Be smart this winter by setting your thermostat to a reasonable – and...

edwardsroyalcomfort.com

Room temperature would be 293.15

15000 - 293.15 = 14,706.85 kelvin

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

www.omnicalculator.com

= 6,339,118 joules

 

[Papa Nier]

Apparently someone calced the Onyx Sentinel beam to 21.65 tons.

OBD Wiki - Comprehensive Energy Scale

Outskirts Battledome Wiki, the biggest source for cross-fiction battles on the web.

outskirtsbattledomewiki.com

 

[Blade]

mchief vs mcu street level chars, soon

 

[Maddie]

Going back to the thermonuclear feat

“Soon,” Linda said. “What timer delay do you want?”
“Two seconds longer than you need to get clear,” John said. “This is going to be close.”
“Give us thirty seconds,” Fred said. “We’ll leave via escape pod.”
John approved. Because Seoba had only a trace atmosphere, the shockwave of a Fury one-megaton thermonuclear device would barely be noticeable from a half kilometer away, and both Spartan Mjolnir and ODST space-assault armor was already shielded from EMP. So they would need to worry only about the heat blast, which could be avoided by simply hiding behind something . . . the farther away, the better, of course.
...
John ignored him. “All personnel, take cover!” he said. “Fury-class tactical nuke detonation thirty seconds! Repeat, tactical nuke thirty seconds!”
...
John was already up and bounding down the run-out drift with Joshua and Anton when Crowther’s voice came over the command channel.
“What the hell was that?”
“Fred and Linda with Starry Night survivors,” John reported. “Be advised, self-destruct detonation in twenty-five seconds.”
...
John didn’t know quite what to make of the exchange with the two commanders, but he’d figure that out later—assuming he cleared the half-kilometer safety range before the Fury detonated.
...
Then John and his companions reached the bottom of the run-out drift, dropped into the blanket of sublimation fog, and started across the quarry floor at a sprint. He didn’t want to distract the squad by asking for a count-off, but his motion tracker showed five Spartans fleeing in the same direction. Counting the two with him and the two that had ridden the escape pod away with Fred, that was all but one of the squad right there. With luck, he wouldn’t lose any.
The gray silhouette of a wrecked Covenant hoverbike emerged from the fog ahead, and a moment later his onboard computer displayed a yellow five-second countdown on the HUD. Four, three . . . John and his companions leaped over the vehicle and crouched down behind it.
The count on his HUD reached one. His helmet speakers crackled with static, and the quarry grew as bright as a muzzle flash. The vehicle rocked ever so slightly, and the fog cleared, carried away on the shadow of a shockwave that Seoba’s trace atmosphere could support.
John rose, then looked back toward a billowing wall of steam where the run-out drift had been a moment before. He was happy to see the blocky shapes of several Spartans—first three, then four, then all five that he had seen on his HUD earlier—emerging from the cloud, stumbling and weaving, but still on their feet. Their Mjolnir was shielded from the EMP released by nuclear weapons, and the lack of atmosphere had protected them from any shockwave effects. But if they had been close enough to the detonation, their armor could have taken some heat damage—and if the shielding had been breached, the Spartans themselves might even have suffered some radiation poisoning.
Source: Halo: Silent Storm

NUKEMAP by Alex Wellerstein

NUKEMAP is a website for visualizing the effects of nuclear detonations.

nuclearsecrecy.com

Chief did not withstand any shockwave or airblast due to the atmosphere being thin. So I am going to use just thermal radiation which at 1 megaton would equal 11.3 cal/cm^2

Chief is ~2.52 m^2, divided by 2 is 1.26 m^2

11.3 cal/cm^2* 1.26 m^2 = 595,717.92 joules

It is probably lower however as the thinner atmosphere leads to less thermal conductivity. In fact, the shockwave obviously is referring to the airblast and the book notes it dissipates by 500 meters. Using nuke map, that's equivalent to a 75 ton nuclear explosion. The thermal energy here is 6.3 cal/cm^2

6.3 cal/cm^2 * 1.26 m^2 = 332,125.92 joules

So he probs tanked ~332.13 to 595.72 kilojoules from the nuclear blast

 

[Maddie]

Chief in Mjolnir 4 armor tanked a Hunter slamming his shield at him


I will use this as a basis for the swing speed:

ttp://swordstem.com/2018/08/22/how-fast-do-swords-move-try-1/

I will just assume it hits at 70 km/hr

Kinetic Energy Calculator

If you know the mass and velocity of an object, use the kinetic energy calculator to find its energy in movement.

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= 342,994 joules

 

[Maddie]

Sparks began to flash along the grav tube walls. A projectile deflected off John’s shoulder armor, and he checked his motion tracker. Five hostiles were clinging to the wall twenty meters behind him—which meant above him, since he was descending the grav tube face-first. He rolled onto his back, then felt more impacts as two more projectiles burrowed into his titanium breastplate.

Still wasn’t a disaster, but getting closer.

A line of the saurian aliens was hanging above the closed hatch, each clinging to a built-in utility ladder with one hand and firing some sort of Covenant carbine with the other. Sooner or later, one of them was bound to hit a soft spot in his armor, just as they had Sam’s.

...

John ejected his ammo clip and reached for another, enemy rounds still impacting his armor, mostly glancing off, but some burying themselves deep in the titanium shell.

A little deeper, and it would be a disaster.

Carbine Shells can burrow deep into Chief's armor. Carbines go at mach 5 and they were 20 meters from him.

600 meters it loses 50% of its mass and goes at a speed of Mach 5, that gives a timeframe of 0.349854227

Half-Life Calculator

This calculator computes any of the values in the half-life formula given the rest values. It also converts between half-life, mean lifetime, decay constant.

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20 meters/Mach 5 = 0.0116618076 seconds

= 97.716 grams

Kinetic Energy Calculator

If you know the mass and velocity of an object, use the kinetic energy calculator to find its energy in movement.

www.omnicalculator.com

at 1715 m/s, that's 143,702.4 joules

This is portrayed as approaching a limit for the durabiltiy of Mk IV armor because it is making deep boreholes into the armor. It isn't the limit, but it's approaching. They are firing from many different angles at different spots so I don't think I should calculate the accumulative amount of damage all the shots did. If this was done on his shielding that would be a different story.

 

[Maddie]

“Look at the holes.” John maneuvered his boot to flip the trooper back over so Johnson could see the entry hole. “The same size. That means armor-piercing rounds—big ones. Probably depleted uranium.”

“Probably from Vulcans,” Johnson agreed. He was referring to the M41 light anti-aircraft gun, a cumbersome weapon that had to be either vehicle- or turret-mounted in order to fire accurately. “They were waiting for us.”

...

John continued to drop, and he began to see Vulcan muzzles flashing through the bunker embrasures. The weapons were using vacuum-suitable tracers, so he could see that the insurrectionists’ fire was lagging well behind his maneuvers—though by less and less as the range decreased. Finally, after he had descended a full kilometer, John reversed thrust.

He decelerated hard, but had built a lot of velocity and was still dropping fast. By the time he fired the rocket launcher, the range had fallen to 350 meters.

The missile streaked away in blinding brilliance, shrinking into a silver dot as John rolled into an evasive corkscrew. He felt a round glance off his thigh armor. The gunner was still firing as his bunker erupted into a spray of steam and ice.

M41's are based on GAU-19s which have a muzzle velocity of 887 m/s and use .50 BMGs. However these bullets use depleted uranium, so I gotta recalc how heavy it is.

These .50 BMGs are 647 grains with the powder amount being 292.8 grains = 354.2 grains, copper is 8.96 g/cm^3. That is a volume of 2.56158191 milliliters.

Depleted Uranium has a density around 19 g/cm^3

2.56158191 milliliters * 19 g/cm^3 = 751.09 grains

292.8 grains + 751.09 grains = 1043.89 grains

That gives me a kinetic energy of 26,609.7 joules

This bounces off his armor

 

[Maddie]

I finalized the calc for the Plasma Grenade feat in Halo Uprising:

At 20 degrees celsius, air has a density of 1.2041 kg/m^3

Volume of a Hemisphere Calculator | Formula

Our volume of a hemisphere calculator is designed to answer the following questions: How can you find the volume of a hemisphere? What is the volume of a hemisphere formula?

www.omnicalculator.com

With a 3.96 meter radius, the volume of the explosion is 260.12 m^3

260.12 m^3 * 1.2041 kg/m^3

= 313.210492 kilograms

Using Air (Gas, Room Cond) I get 1012 joules/kilogram

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

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= 944,567,673 joules

The question should be if this is enough to vaporize the Brute as shown in the comic

https://www.sfu.ca/~mbahrami/ENSC%20388/Suggested%20Problems/Chapter%205/ENSC%20388_P5_119.pdf

Human body is 3600 joules per kilogram

Jiralhanae is 510-680 kilograms

That makes a temperature change of 385.853-514.47, not enough to actually vaporize bone but enough to flash vaporize all blood. I think it's an okay estimate. We don't have proof 100% of the Brute was simply vaporized. This level of intensity is still enough to cauterize and char the bone enough to carbonize it. I think this number is good, and I consider it the safe end here. However, I will do a high end too I guess. Let's assume the Brute was entirely vaporized, bone included. Bone is composed of Hydroxyapatite which has a boiling point of 1500 degrees celsius. Average body temperature is 37 Celsius meaning a temperature change of 1463 Celsius. The brute is 510-680 kilograms.

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

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I get 2,686,070,000-3,581,425,000 joules being needed to do that.

now I need to calculate how much of it Chief actually tanked:

259 cm = 451 pixels
Distance to Grenade = 233 pixels = 133.8 cm

4π(133.8 cm)^2 = 22.4968696 m^2

944,567,673 joules/22.4968696 m^2 = 41,986,627 joules/m^2
2,686,070,000 joules/22.4968696 m^2 = 119,397,501 joules / m^2
3,581,425,000 joules/22.4968696 m^2 = 159,196,593 joules/m^2

Safe End: 41,986,627 joules/m^2
High End: 119,397,501 joules / m^2
Super High End:

3,581,425,000 joules/22.4968696 m^2

Cross-sectional area of Master Chief is 1.26 m^2

Safe End: 1.26 m^2 * 41,986,627 joules/m^2 = 52,903,150 joules
High End: 1.26 m^2 * 119,397,501 joules / m^2 = 150,440,851 joules
Super High End: 1.26 m^2 * 159,196,593 joules/m^2 = 200,587,707 joules

 

[Maddie]

In Halo 4, Chief kicks the hammer for the missile, assuming the dimensions are about 2x3x1.5 meters or 9 cubic meters, that's 40500 kilograms if the hammer is made of titanium

Going by the GIF, the hammer was kicked between 4.42 to 4.99 or in 0.57 seconds

The distance appears to be about 5 meters, so the hammer was kicked at 8.77192982 m/s

Kinetic Energy Calculator

If you know the mass and velocity of an object, use the kinetic energy calculator to find its energy in movement.

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I get 1,558,248 joules

However it was kicked easily across a titanium surface

The drag coefficient of pure titanium is 0.32

https://www.azom.com/article.aspx?ArticleID=2618

1,558,248 joules/0.32 = 4,869,525 joules

However this also took place in a low-g environment. I don’t have a specific number, but I can assume maybe the Ship is within Geosynchronous orbit

https://howthingsfly.si.edu/ask-an-explainer/what-amount-gravitational-acceleration-produced-geostationary-satellite#:~:text=For a geostationary satellite, which,much gravitational acceleration at all!

That’s a gravity of 0.03g

1/0.03 = 33.333

So I actually have to divide the number I got by this:

4,869,525 joules/33.333 = 146,087.211 joules

 

[Maddie]

I'm going to be looking at the Ghost of Onyx Feat where Holly was vaporized by hunters as the calc is kind of old

Holly is at least a bit heavier than Lucy who is 70 kilograms.

Lucy was tiny. Like Tom, she was only twelve years old, but at one point six meters and seventy kilos, Lucy was one of the smallest SPARTAN-IIIs. Without her SPI armor and weapons, and her pale form covered only in modest body sheathing, she looked even smaller.

I will assume about 75 kilograms

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

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I noted before the average heat capacity of the human body is 3600 joules/kilogram. I will use the latent heat of water (2260 joules/gram) afterwards:

Latent Heat of Vaporization/Condensation

'Latent Heat of Vaporization/Condensation' published in 'Encyclopedia of Snow, Ice and Glaciers'

link.springer.com

Internal body temperature is 37, given the outer suit is 3287 I want this to be uniform so a temperature change of 3250:

= 877,500,000 Joules

Latent heat * 75 kg = 169,500,000 joules

= 1,047,000,000 joules

As for the SPI armor, it's weigh less heavy than Mjolnir Armor. In fact it was used by ODSTs.

How heavy was a knights' suit of armour (DE)? | EXARC

Summary: A complete suit of armour of a knight in the late 13th and early 14th century weighed about 30 to 35 kilogrammes. To us, this may seem heavy, but a knight was used to carry his equipment from very young childhood on... The content is published under a Creative Commons Attribution...

exarc.net

A full suit of knight armor was 35 kilograms. That doesn't sound about too wrong, however maybe the stuff is thicker so I will double it to be 70 kilograms to be generous. Titanium has a boiling point of 3287 degrees Celsius.

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

www.omnicalculator.com

I get 120,337,070 joules

However I forgot the latent heat:

Metals - Latent Heat of Melting

Metals and their latent heat of fusion.

www.engineeringtoolbox.com

Latent heat of fusion is 390 joules per gram

70 kilograms * 390 joules per gram = 27,300,000 joules

Latent heat of vaporization is 8795. 20338 joules per gram

70 kilograms * 8795. 20338 joules per gram = 615,664,237 joules

Or a total energy of 763,301,307 joules for vaporizing the SPI armor

1,047,000,000 joules + 763,301,307 joules = 1,810,301,307 joules

4 Protected, so will divide by 4

1,810,301,307/4 = 452,575,326.75 joules

Chief once tanked 6 Hunter Blasts. Now given how they looked I think it was actually the smaller rapid fire blasts, but as a high end, assuming he took all 6 full powered blasts, that's ~5.4 gigajoules

 

[Maddie]

Spartans using the ground pound ability flipped a Wraith

It flipped from front to back, the Wraith is 8.8 meters long and has a mass of 46 long tons

The time it took to flip the tank halfway through (So that gravity does the rest) in the video was between 1.98 and 2.68 or 0.7 seconds

I will have to do 1/4 the circumference of the "circle" that is the wraith's length (8.8) meters or 6.9115 meters

6.9115 meters/0.7 seconds = 9.87357143 m/s

At 46 long tons, that is a kinetic energy of 2,278,191 joules

The area of a Wraith's length is 60.82 square meters

2,278,191 joules/60.82 square meters = 37,457.925 joules/square meter

I can't get a good estimate of the area affected by the shockwave but it appears to be 15 meters in diameter or so or 176.7 square meters

37,457.925 joules/square meter * 176.7 square meters = 6,618,815.35 joules to createa shockwave from the groundpound like that.

 

[Maddie]

I am considering making a new rule for Halo: Splitting Bungie Era and 343i Era stuff.

My reasoning is that the lore and history of everything, human-covenant war, Forerunners, etc in 343i Era is fundamentally different from Bungie Era and was pushed by one guy mostly ignored by Bungie until he took the reigns.

 

[Maddie]

I plan on reorganizing feats to be based on book, so for Book 1.

Fall of Reach Feats
Speed

Spoiler

Master Chief dodges a plasma bolt:

Explosive needles bounced off the Chief's armor, detonating as they hit the ground. He saw the flash of a plasma bolt----side stepped----and heard the air crackle where he had stood a split second before.
Source: Halo: The Fall of Reach

Master Chief dodges point-blank stun round fire outside of his armor:

The last guard on the bunker turned to fire at John. Halsey gripped the edge of the chair. "He's at point-blank range! Even stun rounds can kill at that distance!"
As the guard's gun fired, John sidestepped. The stun rounds slashed through the air, a clean miss.
Source: Halo: The Fall of Reach

Chief Mendez tells Halsey that the Spartans' reaction times are almost impossible to chart and that they double during combat. Chief Mendez estimate it at twenty milliseconds without the adrenaline:

"What are their reaction times?"
"Almost impossible to chart. We estimate it at twenty milliseconds," Mendez replied. He shook his head, then added, "I believe it's significantly faster in combat situations when their adrenaline is pumping."
Source: Halo: The Fall of Reach

With help from Cortana, Master Chief times and deflects a Scorpion missile fired at him, managing to deflect it away from him at the very last second. Master Chief also survives being near ground zero of the explosion of a Skyhawk missile after he himself deflected it:

The Skyhawk was back and starting its run straight toward him.
Even with his augmented speed, even with the MJOLNIR armor----he'd never make it to the bell in time. He'd never make it alive.
He turned to face the incoming jet.
"I'll need your help, Cortana," he said.
"Anything," she whispered. The Master Chief heard nervousness in the AI's voice.
"Calculate the inbound velocity of a Scorpion missile. Factor in my reaction time and the jet's inbound speed and distance at launch, and tell me the instant I need to move to sidestep and deflect it with me left arm."
Cortana paused a heartbeat. "Calculations done. You did say 'deflect'"?
"Scorpion missiles have motion-tracking sensors and proximity detonators. I can't outrun it. And it won't miss. That leaves us very few options."
The Skyhawk dove.
"Get ready," Cortana said. "I hope you know what you're doing."
"Me, too."
Smoke appeared from the jet's left wingtip and fire and exhaust erupted as a missile streaked toward him.
The Master Chief saw the missile track back and forth, zeroing in on his coordinates. A shrill tone in his helmet warbled----the missile had a guidance lock on him. He chinned the a control and the sound died out. The missile was fast. Faster than he was ten times over.
"Now!" Cortana said.
They moved together. He shifted his muscles and the MJOLNIR----augmented by his link to Cortana----moved faster than he'd ever moved before. His leg tensed and pushed him aside; his left arm came up and crossed his chest.
The head of the missile was the only thing he saw. The air grew still and thickened.
He continued to move his hand, palm open in a slapping motion----as fast as he could will his flesh to accelerate.
The tip of the Scorpion missile passed a centimeter from his head.
He reached out----fingertips brushed the metal casing----
----and slapped it aside.
The Skyhawk jet screamed over his head.
The Scorpion missile detonated.
Pressure slammed through his body. The Master Chief flew six meters, spinning end over end, and landed flat on his back.
Source: Halo: The Fall of Reach