does the A-320 have an adg?

[DDpaysoff]

thanks. Just watching the discovery channel deal wondering if it deployed??

 

[St. Nic]

Yeah, why didn't it deploy with Sully? I thought both engines quit. ANy airbus guys know why?

 

[PeanuckleCRJ]

thanks. Just watching the discovery channel deal wondering if it deployed??

It does. If you're talking about the Sully floatplane, they never actually lost all power. He immediately cranked the APU and one of the engines never fully died, but was only capable of just above idle thrust.

 

[AnimalTale]

It does. If you're talking about the Sully floatplane, they never actually lost all power. He immediately cranked the APU and one of the engines never fully died, but was only capable of just above idle thrust.

Actually, I heard the RAT "did" deploy.

CYA

 

[Mad Dog 80]

The engines still had partial power (Idle) and he crancked the APU. He was in Normal Law during the entire event. Making the aircraft easier to control.

 

[maremare505]

For the RAT to actually auto-deploy, both AC buses have to "fail". Yes, the APU was cranked up, but it was not a factor. SOP's knowledge and experience will mandate such action. RAT logic states that, if there is any sort of engine spining as a result of a "bird strike" or anything such as, the electrical network will NOT recognize that as an actual AC BUS failure. Therefore and for as long as the engine driven components (GEN's/IDG's/EDP's and so on) get some sort of movement, even at a low rate, the RAT logic is blinded by it. Somebody mentioned that the engines were at idle and the RAT actually deployed. Only one eng. was at idle and NOT RAT was deployed. Trust me.

 

[maremare505]

DDpaysoff: Is an ADG same as an IDG?

 

[DDpaysoff]

DDpaysoff: Is an ADG same as an IDG?

In my aircraft we call it a dry ADG (auto-deploy generator) and it is supposse to auto-deploy with AC essential bus failure or it can be manually deployed by the pilot. Since our AC essential bus has the ability to auto transfer from AC bus 1 (IDG 1) to AC bus 2 (IDG 2), its logic assumes both generators fail. ADG also powers one of electrical hydraulic pumps to have one hydraulic system online. I guess everybody has different acronyms as I have been at 2 airlines now and I know they can differ, but we call "integrated drive generators" IDG.

Thanks for all the replies above, I did not know that one engine was still above the minimum n2 thrust setting to have a main generator online. Figured the "TV folks" meant idle as dead. Thanks again guys.

 

[overseas boy]

Boeing = RAT
Airbus = ADG (air driven generator)

 

[PeanuckleCRJ]

It's referred to as the ADG in the Boeing manuals for the 757 and 767.

RAT and ADG are interchangable terms in most applications. Note that I said most....

 

[AA717driver]

IDG=Integrated Drive Generator. CSD+Gen=IDG.

The RAT/ADG is an all or nothing thing. Any power at all on the AC busses, the RAT stays put. Zero power on the AC busses, it deploys.

Sully's airplane had "some" power. Therefore, no RAT.

TC

 

[Bringupthebird]

SOP's knowledge and experience will mandate such action.

What mandates trying to restart a running engine?

 

[BILL LUMBERG]

It's referred to as the ADG in the Boeing manuals for the 757 and 767.

RAT and ADG are interchangable terms in most applications. Note that I said most....

Who's books are you reading? I've been on the jet for 6 years and never heard of it, but that doesn't mean I pay attention.....

We have an (ADP) Air Demand Pump
and an (HDG) Hydraulic Driven Generator

Maybe I'm missing something....

 

[Kharma Police]

Come on guys, it's so simple maybe you need a refresher course! It's all ball bearings nowadays. Now you prepare that ADG with some 3-in-1 oil and some gauze pads, and I'm gonna need 'bout ten quarts of anti-freeze, preferably Prestone. No, no make that Quaker State.

 

[monkeybrains01]

Sully hasn't shut the apu off since Cactus bought US Air

 

[stupidpilot]

DC-10 calls it an ADG too. Air Driven Generator. But it's manually deployed.

 

[Flyin2low]

I thought RAT was for RAM AIR TEMP.

 

[starchkr]

I thought RAT was for RAM AIR TEMP.

There it is, and i thought it was for those huge furry animals left in the bird after it comes back from a heavy check in El Salvador..

 

[mesaserf]

At Mesa we just call it the "Trolling Motor".

Shush! Careful... you might spook the fish!

 

[metrodriver808]

It's referred to as the ADG in the Boeing manuals for the 757 and 767.

RAT and ADG are interchangable terms in most applications. Note that I said most....

My manual for the 763ER call it a RAT, it only provides center hydraulic. Maybe the 757 is different and it provides electrical so then it is called an ADG(enerator)