No cables or ropes: Shows how the electromagnetic ammunition lifter works on a U.S. Navy aircraft carrier

The American aircraft carrier USS Gerald R. Ford (CVN-78) was commissioned back in 2017, but was still virtually unfinished. One of the key problems was the lack of electromagnetic lifts needed to lift ammunition to the deck of the ship.

As reported in the USNI News, on December 23, the last lift (of 11 required) was handed over to the US Navy by the shipbuilding company Huntington Ingalls Industries.

These lifts use special motors and transmission systems, dispensing with cables and ropes, to move ammunition from armory warehouses of the ship on its deck and in hangar compartments for equipment of aircraft

- noted in the publication.

Since the handover of the USS Gerald R. Ford the fleet in 2017, the elevator developer was engaged in the certification of systems without then installing a single elevator. At the same time, according to the Navy, the elevators proved their reliability in commercial conditions, but their compatibility with the aircraft carrier was required.

Taking into account the variable [in the mass] of the load, the lift mechanism must work in strict coordination with a number of clinkets and shafts

- indicated in the USNI News, explaining that, as expected, this system will increase the speed of aircraft departures from an aircraft carrier.

The US Navy plans to include Gerald R. Ford in battle formations in 2022. USNI News showed the principle of operation of an electromagnetic ammunition lift on an aircraft carrier.

Elevator testing began back in 2020. All this time, the contractors were in close contact with the crew and the aircraft carrier's wing. Rear Admiral James Downey described the transfer of the elevator as a milestone for the US Navy, the aircraft carrier itself and its crew. According to the rear admiral, hundreds of foremen, technicians and engineers worked around the clock to test new technology, and as a result, the aircraft carrier still received the system in working order.

The US Senate, in turn, noted the importance of introducing new technology for American aircraft carriers in the general context of the growing confrontation with China in the Asia-Pacific region. All systems of weapons and equipment on American ships must be as efficient and modern as possible in order to ensure the uninterrupted operation of ships, including on long ocean voyages.

Comments

[Aerodrome]

No cables or ropes: Shows how the electromagnetic ammunition lifter works on a U.S. Navy aircraft carrier

the consequences of the EMP ATTACK, we do not even consider ...

[volodimer]

Yeah, remember that ships always provided for the option of "manual supply" of ammunition.

Taking into account the variable [in the mass] of the load, the lift mechanism must work in strict coordination with a number of clinkets and shafts ..

A neodymium magnet applied in the corner causes an imbalance in the elevator and causes the aircraft carrier to be scrapped.

[km-21]

Quote: volodimer

Yeah, remember that ships always provided for the option of "manual supply" of ammunition.

This was true in the era of sailing ships and cast iron cannons firing cannonballs. And modern ammunition cannot be supplied by hand, just as you cannot launch an airplane "from a pusher."

Quote: volodimer

A neodymium magnet applied in the corner causes an imbalance in the elevator and causes the aircraft carrier to be scrapped.

You probably still believe that a CD hanging from your rearview mirror protects you from the radar.

[Shurik70]

Well, we made an elevator without a cable.
Most likely, there are toothed guide rails in the corners, a motor that turns the gear along these rails, and a stopper for blocking.
That is, instead of one motor and a cable, four motors and four rails.
And what is the "most advanced" thing here? The same eggs, only in profile. And it is presented as a genius achievement of advanced technology.
Here are just from the hits of enemy bombs or a simple collision with something, it happens, the structures are slightly displaced. And if the wall offset + (-) 10 cm does not play any role for the cable elevator, then the toothed gear will become inoperative when shifted by a couple of cm.

[flicker]

Well, we made an elevator without a cable.

Yeah, on electromagnets. And given that elevators have a "habit" of hanging from an unexpected de-energization
But I wonder if u

electromagnetic ammunition lifter on an aircraft carrier

if a similar de-energization occurs, then it will simply freeze or that ... in the sense of down ... in the sense of a stone?

Well then, he doesn't need Zircons either.

[kig]

Quote: Shurik70

Most likely toothed guide rails in the corners

did not guess, there are used linear synchronous motors. The elevator really turns out without cables, but you can't do without cables. Apparently referring to moving cables

[Shurik70]

Quote: kig

linear synchronous motors are used there

Better.
If the cable breaks, the elevator will not just stop. It will crash down.

[kig]

Are you sure this possibility was not considered?

[kig]

Quote: Aerodrome

the consequences of the EMP ATTACK are not even considered.

alas, they are. And not only EMP. The manufacturer writes that an elevator must pass difficult tests before being approved for marine service: shock, vibration, roll and differential, electromagnetic interference, maximum load and maximum speed test. In general, the characteristics should be as follows: a lifting capacity of 24000 pounds and a speed of 150 ft / min.

[Thrifty]

And why? To understand the principle of operation of such an elevator, you need to teach physics at school, there is nothing tricky. Only here the maintainability of the entire structure clearly leaves much to be desired, because the strong side of an elevator without cables is also a weak side of the structure. Do not transfer the load and power from the emergency engine to the whole one, if necessary, the whole system must work synchronously, any failure, any breakdown will slow down the elevator, or even make it impossible to operate.

[Gardener91]

Quote: Thrifty

any breakdown will slow down the elevator, or even make it impossible to operate.

Well, for sure, we have provided for power redundancy, the question is how? Somehow all this does not inspire reliability. Lazy at all, would not be in the old fashioned way - at the navel))

[Thrifty]

Sadovnik91 - for uninterrupted operation, it is necessary to reserve not only additional, albeit temporary, power supplies, but also to install additional electric motors, which inevitably makes the whole structure heavier and smoother.

[Gardener91]

Quote: Thrifty

for uninterrupted operation, it is necessary to reserve not only additional, albeit temporary, power supplies

Yes, for the survivability of this trough, they pushed so much energy and those. reserve that it was possible to stick in one more wing.

[D16]

Well, for sure, you have provided for power redundancy, the question is how?

Once they made the most productive 6-meter centrifuges for uranium enrichment. Since then, they themselves have not enriched him. .

[km-21]

On the contrary, linear electric motors make it possible to do without winches and gearboxes, which reduces the overall weight and dimensions of the structure, improves efficiency and reliability. An electromagnetic catapult works according to the same principle, therefore, this technology is recognized as sufficiently proven and efficient.

[Gardener91]

Quote: km-21

therefore, this technology is recognized as sufficiently proven and efficient.

And why only TSA is served on the deck? We could have started with planes right away. After all, this technology is recognized as sufficiently proven and efficient?

[Amateur]

If they still work, then they will not have a price.

[kig]

Actually, you can see:

[Pandiurin]

Quote: Thrifty

And why? To understand the principle of operation of such an elevator, you need to teach physics at school, there is nothing tricky. Only here the maintainability of the entire structure clearly leaves much to be desired, because the strong side of an elevator without cables is also a weak side of the structure. Do not transfer the load and power from the emergency engine to the whole one, if necessary, the whole system must work synchronously, any failure, any breakdown will slow down the elevator, or even make it impossible to operate.

Perhaps there are several linear motors, for example 2 or 4, if it fails, then for a while everything will work without one faulty one.

A linear motor has no moving electrical parts, which means if something goes wrong, it's electronics, there is probably a spare parts kit and a quick replacement procedure.

The technician should already thoroughly know the principle of operation, the repair of such devices (there is an electromagnetic catapult) here the elevator is based on the same principle.

[kig]

Quote: Pandiurin

The technician should already thoroughly know the principle of operation, repair of such devices

the same USNI News previously reported that the elevator manufacturer will build a special training classroom by 2020 where they will train technicians, and at the same time fight against bugs in the software.

[alexeyrem]

A ZIRCON does not care with which elevators to heat this trough?

[km-21]

You can drown the whole of America with zircons.
Not getting up from the couch.

[75 Sergey]

No, fewer moving parts, higher reliability ... Interesting solution!

[Mountain shooter]

On linear motors? Well, what are the advantages? Are the elevators faster?
Well, maybe. Electromagnetic catapults, in my opinion, are much more important.

[volodimer]

Well, obviously, in the USA they decided: if the new aircraft carriers are floating nuclear power plants, then there will be a lot of liposuction there. This means that all devices must be made electrical.
I'm surprised they haven't made the F-35 hybrid yet.
Why carry fuel on a flight when you can get charged from an aircraft carrier.

[Zoldat_A]

Quote: volodimer

This means that all devices must be made electrical.

On their Abrams, at least until recently, the automatic loader was a hefty black man. Why be ashamed - they would put a winch with a "drive" in four blacks here too ... And then they spent money, go, for that elevator - the entire fleet of Ukraine does not cost so much.

[tralflot1832]

There is such Murphy's law, if meanness is possible, it will surely happen. A vigorous ammunition is raised on this elevator or an ordinary one, and here the reluctance and the avik are partially de-energized, just on the side where the elevator is, the stoppers did not work, the blacks next to the elevator will be white at first, and then how lucky. With ropes it is somehow more reliable.

[Zoldat_A]

Quote: tralflot1832

There is such Murphy's law, if meanness is possible, it will definitely happen.

My physics teacher, blessed memory Big Man and Big Professional, called it "the law of total fatalism." And, the infection, it still works ...

[DeFalco]

With an automatic loader, turrets from tanks are more likely to take off into the air. Because of the ammunition.

[D16]

I'm surprised they haven't made the F-35 hybrid yet.

It won't take off with such batteries)))

[Pandiurin]

Quote: Mountain Shooter

On linear motors? Well, what are the advantages? Are the elevators faster?
Well, maybe. Electromagnetic catapults, in my opinion, are much more important.

The engine through the gearbox has a crazy power on inertia.
If there is some kind of stopper for movement, for example, something worked that the movement is not safe, when stopping something will be folded mechanically, either the stopper or the gears will fly in the gearbox, the clutch will burn out. An engine with a gearbox for replacement is either conveniently placed on the side, then it takes up space, or hanging from below is then inconvenient to climb.

The electric motor has many disadvantages.

[tralflot1832]

There is no opportunity to brag about hypersonic missiles, we will brag about the elevators. And this morning we carried out a salvo launch with Zirconia.

[Basarev]

An electromagnetic elevator is a great idea. As few moving parts as possible, as few unreliable mechanics and hydraulics as possible.

[poquello]

Quote: Basarev

An electromagnetic elevator is a great idea. As few moving parts as possible, as few unreliable mechanics and hydraulics as possible.

hydraulics are just more reliable, but good, good, I would even say mechanics are also more reliable, but good, good

[singless]

all now we are waiting for new fiction type frontier. a shell half a ton will jump into the gun itself

[faterdom]

They are hiding the antigrav so that Putin and the Chinese are not stolen.

[Kedrovich]

The headline took me to a different topic. I decided that they had invented something clever for lifting ammunition from the bottom of the sea. Well, there, training or not working .. And then it turned out that they are discussing a banal elevator from the storages to the deck.

[Split]

Well, it was definitely not the dogs that raised, but the blacks

without cables

[agond]

What did they mean by saying that there are no cables at all, the cable is clearly visible in the rubber protection on the right far post of the lift

[Rome]

And where to see the principle of work? Does it work like a magnetic pillow? And from magnetic fields, there is nothing that is not magnetized, what then needs to be demagnetized? And what is its effectiveness, does it fly much faster? Or does it take up less space?

[Turist1996]

Primo without cables ?! And what kind of flexible cable-tray on the right under the platform is visible when it rises?

[bar]

Judging by the video, the rate of rise of ammunition is simply incredible. I was especially impressed that it only takes two people to fasten the chain.

[Reserve buildbat]

It will look beautiful when at least one rail bends or is somehow damaged. And the elevator will go down stupidly. As far as I remember, the distance between the moving and stationary parts is very important for such electromagnetic toys.