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ekky ,

Just detach the blades. You can always re-attach them when you’ve landed.

Zwiebel ,

That’s what the Ka-50 does

nuke OP ,
@nuke@sh.itjust.works avatar

Works as a secret weapon too.

Oh you think I’ve been disarmed? smirks AMATEUR violently ejects rotor blades in all directions

Fosheze ,

I was just thinking the entire rotor assembly detaches and the helocopter falls away from it. But I think I like your idea better.

mindbleach ,

For ejection, the blades come off.

For combat, whole-rotor Beyblade.

TheBat ,
@TheBat@lemmy.world avatar

https://lemmy.world/pictrs/image/e7376610-957a-43a1-ad54-359159d5a36e.jpeg

RogueBanana ,

What is this from? Looks pretty cool

epsilon_eridani ,

Edge of Tomorrow. Fun movie.

Klear ,

Great for fans of Tom Cruise because he’s in it.
Great for people who hate Tom Cruise because you get to see him die over and over again!

Kaliax ,

The angle of the top of his feet/boots remind me of the Ron DeSantis boot thing - where he’s actually using a platform type setup to gain height.

halvar ,

I doubt you’ll need to if you already had to eject.

mindbleach ,

I love jigsaw puzzles.

Toneswirly ,

I think i heard one time that helicopters can jettison the rotor so you dont get chopped up

Steak ,

Pretty sure someone was lying to ya

notabot ,

Several models of helicopters have ejectable blades, this article mentions a few, and has a diagram of the blade severing system.

Steak ,

Damn never would have expected that. Thanks for showing me something new!

Leate_Wonceslace ,
@Leate_Wonceslace@lemmy.dbzer0.com avatar

Unfortunately, that won’t stop the blades from spinning, meaning the danger isn’t averted.

JohnDClay ,

You shear the blades so they shoot outwards. I couldn’t find an irl testing video, but here’s a render.

youtu.be/a1kr651en7g

TranscendentalEmpire ,

Mainly just copium for the pilots. Helicopters aren’t like airplanes where you have glide time and altitude to decide what to do after something bad happens. If you watch fixed winged ejections there’s usually about 30 seconds to a min after something goes wrong before the pilot decides to bail. Helicopters go from everything being fine, to a debris field in seconds.

Estiar ,

It’s more about altitude than the ability to glide. Helicopters can do what’s called Auto rotation, which means they actually can glide. If the blade seize up however, they can’t autorotate. Helicopters fly a lot lower than most airplanes though, so they can’t glide as far.

TranscendentalEmpire ,

Autorotation is mostly copium as well.

Explanation

Estiar ,

Wow. I’d be nuts to fly one of those things. 6000 VVI sounds like suicide

With the collective firmly held down on the bottom stop, things happen very fast. The helicopter is descending in a hurry, as in 4,000 – 6,000 feet per minute. Do the math, if you are at 1,000 feet and the descent rate is 4,000 feet, you have one quarter or a minute – 15 seconds – to find a place to land.

TranscendentalEmpire ,

Yeah, helicopters are the apex predators of soldiers and rich people. Even if you pull off the perfect autorotation, the glide ratio is still only a maximum of like 3:1.

I think I remember reading a report somewhere that more people have been killed by practicing autorotation than have actually pulled it off in the wild.

tibi ,

Now you have blades shooting away from the helicopter at a high speed which could kill someone.

chiliedogg ,

The Kamov does it.

The individual rotor blades are separated from the center with an explosive charge and their centrifugal motion carries them laterally away from the vehicle as the seat rockets straight up.

skulblaka ,
@skulblaka@sh.itjust.works avatar

As a bonus, whoever was close enough to shoot you down is about to get at least one heavy steel javelin flung terrifyingly close to their direction at high speeds.

I’m assuming here that impact with a long range SAM is probably something you’re not about to eject from.

chiliedogg ,

In cases like that I’d imagine you’d try and eject prior to being hit, though I don’t know enough to know how much warning time there is.

skillissuer ,
@skillissuer@discuss.tchncs.de avatar

not much, considering how many of Ka-52s were shot down without pilots ejecting

TheMightyCanuck ,
@TheMightyCanuck@sh.itjust.works avatar

So basing off another comment. Have the Ejection seat tied to the rotor and shaft (not in a way that the chair spins. Duh)

Then (as long as rotor hasn’t disintegrated) you can eject the seat with the rotor, thus minimizing filet chances… Whilst also floating to the ground softly like those whirly paper helicopter things you played with as a kid

Boom. Parachute free ejection seat

Voroxpete ,

Nah, just do it like they did in WW1; synchronize the ejection to the rotor blades so you fly through the gap, clean as a whistle.

(Please don’t ask about our experiments with the earlier WW1 method of “Fuck it, just shoot the propeller sometimes, it’ll be fine”. Turns out that doesn’t work so great when you replace bullets with people.)

_haha_oh_wow_ ,
@_haha_oh_wow_@sh.itjust.works avatar

Didn’t they also put some sort of armoring on the propellers back then?

Voroxpete ,

Some planes did, but early on they mostly just freeballed it. Turns out propellers are really big and heavy, and they can take a few bullets without breaking. Armour actually makes it more likely that fragments of bullets will fly back at the pilot.

_haha_oh_wow_ ,
@_haha_oh_wow_@sh.itjust.works avatar

Yeah, spall was my first thought when I read they just shot the propellers.

Voroxpete ,

It’s very rare that a bullet strikes the blade anyway. Bursts were short because ammo was very limited (twenty round strips were common in early biplanes), and the percentage of the space in front of the nose that is propeller is absolutely tiny compare to the percentage that is not propeller. To us its all a blur but to a bullet those blades are basically standing still.

nuke OP ,
@nuke@sh.itjust.works avatar

Hold up, let him cook

https://sh.itjust.works/pictrs/image/40535dd1-63b1-4044-90a5-c6468e2596bf.png

nullpotential ,
@nullpotential@lemmy.dbzer0.com avatar

Attach the ejector seat TO the helicopter blades so that they both eject and you get a cool propeller and can fly around and it can shoot lasers and stuff too.

Agent641 ,

Just eject the damaged parts. Viola

Klear ,

Who brings a damaged viola to a warzone?

occhionaut ,

playing with legos be like

Quetzalcutlass ,

I’ll get you next time, Gadget!

PalmTreeIsBestTree ,

Why not just eject sideways?

Contravariant ,

Heck if accelerating to Mach 19 in about 2 meters is acceptable you could just disable the rotors and only experience an acceleration of less than Mach 1 in just a few meters.

BluesF ,

What about that fancy thing that stops table saws when you touch them? Just get one of those and stop the rotors. I’m certain there’s no physical reason this wouldn’t work.

dashydash ,

The energy will have to go somewhere, so the passengers can stand up with their arms stretched, and when the rotating energy reaches them they can jump out and they will start spinning and their arms will act as rotors keeping them in the air long enough to reach land safely. You just need to make sure there aren’t a lot of people on board because the energy will have to be divided on all of the passengers, if there isn’t enough for everyone, they will fall to their death.

Mongostein ,

The energy can go in to ejecting the seat!

If it requires the energy of the rotors being stopped suddenly to eject, there’s no chance of getting filleted

ByteOnBikes ,

It fails “the cool” factor so we rejected it.

Madison420 ,

When helicopters lose power they just fall. If the rotor head isn’t decapitated then when you get ejected sideways there’s s no zero chance you’ll be julienned on the way down.

It’s why the most (only version currently in operation) common method of helicopter ejection severs the head or blades while it’s still rotating so it/they spin off and hopefully away and then the seat rockets away.

Summzashi ,

Your first sentence is wrong. Stop explaining things you don’t understand yourself.

Madison420 ,

It’s a fact. Helicopters in general do not have the ability to glide to a landing, they can auto rotate if the rotor is still moving and has enough momentum. If the rotor stops or detaches helicopters fall…

psud ,

“if the rotor stops” luckily in this universe we have conservation of motion so the rotor doesn’t typically stop in flight

Sure though, were it to detach the helicopter would fly like a brick

Madison420 ,

Hubris isn’t looked on Kindle in the aviation world.

Not common doesn’t mean not possible, we teach autorotation for a reason and it’s not because everything happens perfectly and every aircraft is perfectly maintained.

Helicopters crash constantly and just as an fyi auto rotation is falling with style and so is glide.

Like I said helicopters just fall, an aircraft in the most extreme engine failures tend to be able to glide effectively helicopters can never count on that luxury. So I dunno, since you agree maybe hop off the high horse and apologize.

psud ,

I’m terribly sorry that I pointed out conservation of momentum in a thread where you want to imagine helicopter rotors can just stop. I know that reality is inconvenient.

Madison420 ,

Being wrong is the issue.

Rotors can add have seized, rotor failure is actually one of the more common modes of failure in a helicopter. Also notably I didn’t say it had to stop just that the rotor is no longer effective, like catastrophic blade loss.

Summzashi ,

You said helicopters “just fall” when they lose power. That’s what spawned this tangent. You didn’t specify anything about the engine being seized, which is an additional issue.

You are moving the goalpost, and asked someone to apologize to you for it. You’re a clown mate.

Madison420 ,

Autorotation relies on one main thing, air being forced past a freewheeling rotor… Air that is being forced past because you’re falling.

youtu.be/NLjFQJiJsZc?feature=shared

Notice the immediate loss of attitude? It’s because they’re falling, unlike planes which can generally glide after an engine failure.

youtu.be/CEMlny_ExuU?

Specifically we’re speaking about helicopter ejection which in most cases means total loss of power or control or both. The only known helicopter eje tion seat(to me at least) to operate currently in modern combat is the ka 50/52.

youtu.be/W6y_id3xOX0?

One like this one which happens to eject and notably falls like a stone.

andrewta ,

You are failing to ask him a question: how does he know what he’s talking about?

His phrase was “we teach” which implies he’s an instructor. You should ask him if he is.

SSJMarx ,

When helicopters lose power they just fall.

Any modern heli design will autorotate down. It’s not exactly gentle, but it works.

Madison420 ,

Autorotation relies on one main thing, air being forced past a freewheeling rotor… Air that is being forced past because you’re falling.

youtu.be/NLjFQJiJsZc?feature=shared

Notice the immediate loss of attitude? It’s because they’re falling, unlike planes which can generally glide after an engine failure.

youtu.be/CEMlny_ExuU?

Specifically we’re speaking about helicopter ejection which in most cases means total loss of power or control or both. The only known helicopter eje tion seat(to me at least) to operate currently in modern combat is the ka 50/52.

youtu.be/W6y_id3xOX0?

One like this one which happens to eject and notably falls like a stone.

SSJMarx , (edited )

The KA-50 and -52 destroy their rotors when the ejection seat fires, as shown in this simulation. That’s why the helicopter drops like a rock after the ejection seat fires - the blades can’t autorotate if they’re not attached.

Assuming the blades are still attached, the helicopter will autorotate down even if it is completely unpowered. It might lose some altitude initially, but like you said once the air is moving over the blades fast enough for them to spin they will do what they were designed to do.

One thing helicopters and planes have in common is that if they fail too close to the ground autorotation/gliding won’t help. Helis are generally more dangerous than planes for a lot of reasons, the biggest one being that they spend more time in the most dangerous phase of flight - landing.

Madison420 ,

Tell me you didn’t read the root comment without saying you didn’t read the root comment.

When helicopters lose power they just fall. If the rotor head isn’t decapitated then when you get ejected sideways there’s s no zero chance you’ll be julienned on the way down.

It’s why the most (only version currently in operation) common method of helicopter ejection severs the head or blades while it’s still rotating so it/they spin off and hopefully away and then the seat rockets away.

Losing altitude can be described as falling because the fucking thing is unpowered.

Agreed, though irrelevant.

CanadaPlus , (edited )

Or blow up the rotor at the hub first.

SSJMarx ,

Works for the KA-50!

Admetus ,

I think it’s the Apache helicopter that stops the rotors instantly on eject. No need for Mach 13. I know this graphic is a joke though, I just remembered this cool thing about the helicopter.

SpermGoobler ,

It’s the KA-50/52

rockSlayer ,

Hear me out:

Seats that drop out of the bottom of the helicopter

zaphod ,

F-104 did it first!

SynopsisTantilize ,

Did it work? Like are the test subjects still alive lol that sounds like rear decapitation city

zaphod ,

I think the main problem with down-firing ejector seats was that they require a minimum altitude to work.

…stackexchange.com/…/is-there-a-minimum-altitude-…

SynopsisTantilize ,

I’m gonna turn to YouTube to see what I can find. This is pretty cool. Cars should have ejector seats too.

swab148 ,
@swab148@lemm.ee avatar

They’d definitely have a minimum altitude to work

mindbleach ,

“And what’s the minimum altitude?”

“Uh, one, I suppose.”

SuckMyWang ,

What about sideways?

zaphod ,

I think they did it in a fast and furious movie, I’m not sure if that’s up to NCD standards.

JohnDClay ,

Some Russian helicopters do this

rockSlayer ,

How many of those are intentional?

BackOnMyBS ,
@BackOnMyBS@lemmy.autism.place avatar

That way, the pilots can get to the ground first and cushion the impact of the helo 👌

Agent641 ,

Just do a barrel roll while ejecting so you shoot up. Try not to hit your wingman with your copilot tho

Sam_Bass ,

High chance the rotor has dramatically slowed if the eject is necessary

lud ,

You are not thinking of crashes. The rotor won’t have any time to slow down if the helicopter is about to crash into a building or the ground for reason unrelated to engine (or similar components) failure

Sam_Bass ,

You may be right, i may be crazy

absentbird ,
@absentbird@lemm.ee avatar

But it just might be a lunatic that seat is for.

mindbleach ,

Turn out the light–

Please try to save me!

Zoot ,
@Zoot@reddthat.com avatar

What we really need is a seat that ejects you directly into the ground

Buddahriffic ,

Instead of ejecting the pilot away from the helicopter, why not design the helicopter to eject away from the pilot?

deltapi ,

The designers of the Tu-22 would like a word.

SSJMarx ,

You should be able to switch the engine off and autorotate down in any modern heli design.

If not then explosive bolts on the blades are a proven method to make an ejection seat work even if they’re spinning.

lud ,

Yeah, I know but in this probably fictional scenario something has gone so bad that it’s impossible to autorotate.

Autorotation also only works well at higher altitudes.

unemployedclaquer ,

Sus. I watched AirWolf, and Magnum P.I. AND I’ve studied Leonardo di Vinci. Helicopters are next-gen tech and they don’t crash.

Aganim ,

Ironically the helicopter casted as Airwolf did crash, killing all its occupants. 😞

unemployedclaquer ,

Yeah that sucks, I didn’t mean to go there

fin ,

straight to heaven

FartsWithAnAccent ,
@FartsWithAnAccent@fedia.io avatar

Why not blow the blades off first with a charge in the Jesus pin? Or have the seats eject siddeways or downward? Or like, open the door and jump out hoping you don't hit he rotors?

sushibowl ,

If you eject downward you may hit the ground before your chute has opened. Helicopters tend to stay pretty low.

some_designer_dude ,

Can’t believe I had to scroll this far to find the real solution. Eject rotors, then eject pilots. I think fighter jets basically do the same: eject canopy, then seat.

tibi ,

Because now you have blades shooting away from the helicopter at a high speed which could kill someone.

AbsoluteChicagoDog ,

Eject the helicopter not the seat. Duh.

madcaesar ,

Shoot the hostage!

milicent_bystandr ,

Too hard to accelerate the helicopter’s larger mass to Mach 19. You might still damage the helicopter on the rotor blades.

Kolanaki ,
@Kolanaki@yiffit.net avatar

Fire the seat forward toward the enemy aircraft that forced them to eject to allow them to steal it.

Etterra ,

Oh boy I love it when death is multiple choice!

  1. Fiery explosion
  2. Cuisinart of Doom
  3. Squeezing your brain into hips
  4. 9mm of lead therapy
  5. Other: __________
mindbleach ,

Place the seats in sleds out the front, and attach them to reins on one of the missiles in the battery.

It can’t be any more dangerous than being in a helicopter that’s decided today’s the day.

skulblaka ,
@skulblaka@sh.itjust.works avatar

Major Mindbleach made local headlines today as he drove a Santa Claus-esque sleigh attached to an AARGM directly over the heads of local combatants. Spectators say that instead of dropping gifts like his holiday counterpart, Mindbleach was dropping dook as he shit his pants repeatedly moving at speeds of Mach 2+ attached to a ballistic missile. The final status of Mindbleach is unknown. More information as the story develops.

mindbleach ,

Boeing adamantly insisted this not count toward any statistics on the reported dangers of their aircraft, as the system was working as intended at the time of the pilot’s exit. All questions about subsequent events should be directed to the manufacturer of the missile.

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