CRAZY Jet Engine Mod - ATA Air Brake

Issues of aircraft noise in the communities surrounding airports have long been a concern; however, developing noise mitigation methods for aircraft without decreasing performance or fuel economy has proven challenging. ATA’s EAB has been designed to address these challenges through the use of a deployable swirl vane mechanism to switch the operation of a turbofan engine nozzle from conventional mode to a “drag management” mode. In this mode, swirling outflow from the thrust-generating exhaust stream allows an aircraft to generate equivalent drag in the form of engine thrust reduction at a fixed fan rotor speed;

[@jeremygraham7976]

It’s mind-boggling how those moving parts withstand that amount of air flow pressure

[@atrumluminarium]

And that's just from what's conveyed through the video. I imagine being present in person it will be even more impressive to witness

[@yurttgjk]

This

[@JackRLong12]

Yeah, the first time a maintenance member screws up and has anything in that area when testing is gonna have a shit day

[@kovs-gg8wt]

I mean, they would have have said that about jet/turbune engines when they fist came out too

[@atrumluminarium]

I get where you're coming from but to me this just seems like the same level of complexity as any variable area nozzle would have since it's pretty much the same mechanism at work.

[@Kralasaurusx]

Why would this ever *replace* thrust reversers? Fundamentally different objectives - reduce thrust vs reverse thrust

[@Tech_Planet]

I don't think it would, the claim is that the system would reduce noise vs reverse thrust so maybe they meant as a hybrid system.

[@nicholas_kujawa]

Now this is pod racing!

[@LAkadian]

I'm glad I wasn't the only one.

[@LRK-GT]

'Could see this potentially being useful for Naval Aircraft.

[@williamsteele]

Naval Aircraft can't use this technology... they need to be at full power when they're trapped incase the arresting cable breaks or they miss it. Having a system like this, which I'd call a Thrust Attenuator, is similar to a Thrust Reverser, which reduces the available power. If the cable breaks, they need all the thrust immediately to recover... there is no time for the system to detect the break and then switch modes to regain full thrust. By then, it's too late.

[@chrisedwards3866]

​@@williamsteeleI think you might both be right. The engine needs to be at full power, because it takes engines a while to spool up, but the airplane's velocity is the airplane's velocity - no matter how much power the plane is producing. The plane needs to be at full power so it can accelerate away rapidly, and landing at full power is just the way to ensure the airplane is already in that configuration if the plane misses the arresting cable - and when the pilot would have very little time to react. And of course they have a safety margin as well.
If this system would allow the engine to be rotating at full speed, but produce much less thrust, and could rapidly retract the brakes to enable full thrust again, that could be great. The plane could switch to high thrust the moment it detects that it missed the arresting cable, and accelerate away. This could potentially lessen the wear&tear on that cable and on the aircraft. That arresting cable is very, very expensive, as is the aircraft. So any reduction to that would have a big impact.

[@OrenWasser]

it takes some time to change thrust from idle to full, . which is critical when landing. it might solve this issue

[@davidyoung518]

What happened to the KISS (Keep It Simple Stupid) mentality. Not to mention the increased number of things to go wrong there. And I don't see any form of redundancy. Otherwise....pretty cool!!

[@Tech_Planet]

I agree, I think they looked at a different way to eliminate more noise but it never became feasible.

[@yakut9876]

The one who introduces more and more complex consumer electronics is the one who is promoting these stupid words.

[@roxasparks]

Its really not that complex, its just many simple identical mechanisms and connected to a common point mechanism

[@davidyoung518]

@@roxasparks And once one of those MANY simple mechanisms fails, and they will.....think Boeing!!!

[@silver_lark]

@@davidyoung518if ryanair flew a 737 max

[@Gabriankle]

That IS quiet. Very little sound difference between deployed and stowed.

[@AskiaSabur-g5c]

My Mom would love building engineering this stuff

[@ronparrish6666]

Still like the original 737 200 original clam shell design simple looked neat and it worked

[@BrowithStoryCool]

What does this solve that simply turning the engines down to idle doesnt?

[@DUKE_of_RAMBLE]

Yea, I don't understand this thing's purpose either. (sadly the Short doesn't convey that *key* tidbit)

[@BrowithStoryCool]

@@DUKE_of_RAMBLE the only way this makes sense is if jet engines only had one power setting. Fortunately they have...throttles

[@Ausiedundan]

Is this like reinventing the wheel, with a square wheel?

[@justinbelshe]

Why not both?

[@Mallchad]

I don't understand the purpose of this, to reduce thrust?
Since when was that ever something we needed?

[@philiphockenbury6563]

Usually when you’re trying to land your want to slow down as much as possible as safely as possible, this allows you to slow down faster without having to throttle the engine down which can take time, and with it being able to snap back to full flow means that you have more power to abort a landing attempt

[@Mallchad]

​@@philiphockenbury6563 Sorry my comment is lacking context-
the video mentioned this is an alternative to a traditional thrust reverser. Which provides not only less thrust but acutally negative thrust. And these systems already exist, are well tested, and require very little moving parts.
This in comparison is a very complicated system with many moving parts. So for those reasons I can't see what the benefit/thought process is behind this.
Also a big tunable in engines is throttle-response, so equally you could make an engine with a better throttle response instead of trying to impliment complicated thrust augmentors

[@flyfly2427]

Thise springs remind me if drum brakes.

[@stargazeronesixseven]

😮🙏 The simpler the system the Better & Safer as there will be Less Hardware & Software Complications ... 🙏🕯🌍✌🕊

[@David-yy7lb]

Why re invent the wheel

[@東文文]

😮 漂亮❤❤❤

[@yazidsaidin8792]

Like Mitsubishi VGT Turbo system😂

[@glike2]

So it wastes energy to steepen descent. Fan blades coupled to electric motor and batteries could steepen descent more and recover energy and likely make less noise. Joby aviation electric aircraft will prove this despite its smaller wing.

[@yakut9876]

The worst thing is the electrical system, especially the one that relies on the battery.

[@feelincrispy7053]

Waaaay too much going on to be viable for commercial jets. The beauty of current engines and reversers is there fairly basic mechanical design. The complicated part of modern engines is the computer control and fuel injection which can and do have many redundant systems. When you rely on one system doing it’s job with no redundancy it’s hard to implement for commercial

[@skybreaker8711]

Does anybody have a 3d model of this that I can 3d print

[@marnig9185]

It burns fuel,so.

[@the_singing_potato]

this video has 69 likes 69 69 69 69 69 69 69 69

[@Chameo-San]

This is some transformers shit!

[@thesawman1939]

All that would do is create a vortex. Silly and a waste of time and money.