What's a ram air turbine?

Snow · January 6th, 2003, 07:48

Hello again, yet another question about a MiJet plane I downloaded, this time the 777. Anyhow it talks about it having a deployable ram air turbine, from what I can tell it's a thing that pops out under the belly of the plane on a poll.

If I were to take a guess, I would say it is some kinda emergency windpowered electrical generator?

Can anyone tell me what it is, when and what it's used for and what other aircraft besides the 777 have them?

Much thanks,

PS Who said you can't learn new stuff from Flight Simulators?

avi8tor · January 6th, 2003, 09:02

RAT’s provide reliable emergency/back-up power for operation of critical flight controls and other essential functions on a wide range of aircraft.

Eagle · January 6th, 2003, 10:41

[ QUOTE ]
RAT’s provide reliable emergency/back-up power for operation of critical flight controls and other essential functions on a wide range of aircraft.

[/ QUOTE ]

think of it as a windmill you deploy to make emergency electrical power

AirborneMedic_ANGa10 · January 6th, 2003, 11:10

Here's a pic:

CRJ RAT

E_Dawg · January 6th, 2003, 11:11

They used it on the Air Canada 767 (Glimi Glider) that ran out of fuel to have enough hydraulic power to use the flight controls.

I_Money · January 6th, 2003, 13:52

It still needs a bit of work, currently it does not power the entertainment system or the coffee machine!! Maybe E.N. will work this out!

pure_IMC · January 6th, 2003, 20:56

I know the crjs have them. I also hear, if its deployed in error, its quite the pain, and your company is likely to have words with you!!!

Mavmb · January 9th, 2003, 15:50

A rat??? Cool, I've never heard of them before! So that is their purpose -- to provide electral power? Do they serve any other purpose?

zombie5225 · January 9th, 2003, 16:13

The RAT on he 757 is located aft of the landing gear on the co pilots side. I heard that a few years ago a guy was standing under it while the plane was being unloaded. Either the pilot or a mechanic hit the button by mistake and I guess you guys can figure out the rest.

Vref · January 10th, 2003, 20:51

The 777 RAT provides backup electrical and/or hydraulic power to the critical systems on the aircraft in the event of MAJOR electrical or hydraulic failure. A dual flame out would be an example. It would provide essential flight instruments and certain primary flight controls until you got an engine going or the apu comes online. With just the APU and RAT you would have full instumentation (all glass Cockpit), controllability (primary flight controls),and the worlds largest glider!

I_Money · January 12th, 2003, 14:50

Till they can get the IFE and coffee machine on it, there is still room for improvement.

January 6th, 2003, 07:48	#1
Snow Senior Member Join Date: Jul 2002 Location: Atlanta, GA Posts: 869	What\'s a ram air turbine? Hello again, yet another question about a MiJet plane I downloaded, this time the 777. Anyhow it talks about it having a deployable ram air turbine, from what I can tell it's a thing that pops out under the belly of the plane on a poll. If I were to take a guess, I would say it is some kinda emergency windpowered electrical generator? Can anyone tell me what it is, when and what it's used for and what other aircraft besides the 777 have them? Much thanks, PS Who said you can't learn new stuff from Flight Simulators?

January 6th, 2003, 09:02	#2
avi8tor Senior Member Join Date: Nov 2001 Location: Chicago, ILL. Posts: 432	Re: What\'s a ram air turbine? RAT’s provide reliable emergency/back-up power for operation of critical flight controls and other essential functions on a wide range of aircraft.

January 6th, 2003, 10:41	#3
Eagle Banned Join Date: Oct 2000 Posts: 1,272	Re: What\'s a ram air turbine? [ QUOTE ] RAT’s provide reliable emergency/back-up power for operation of critical flight controls and other essential functions on a wide range of aircraft. [/ QUOTE ] think of it as a windmill you deploy to make emergency electrical power

January 6th, 2003, 11:10	#4
AirborneMedic_ANGa10 Junior Member Join Date: Nov 2001 Location: DFW Posts: 213	Re: What\'s a ram air turbine? Here's a pic: CRJ RAT

January 6th, 2003, 11:11	#5
E_Dawg Moderator Join Date: Apr 2002 Location: chicago Posts: 4,164	Re: What\'s a ram air turbine? They used it on the Air Canada 767 (Glimi Glider) that ran out of fuel to have enough hydraulic power to use the flight controls.

January 6th, 2003, 13:52	#6
I_Money Moderator Join Date: Jul 2000 Location: Socal Posts: 5,650	Re: What\'s a ram air turbine? It still needs a bit of work, currently it does not power the entertainment system or the coffee machine!! Maybe E.N. will work this out!

January 6th, 2003, 20:56	#7
pure_IMC Junior Member Join Date: Dec 2002 Location: Vero Beach, FL Posts: 181	Re: What\'s a ram air turbine? I know the crjs have them. I also hear, if its deployed in error, its quite the pain, and your company is likely to have words with you!!!

January 9th, 2003, 15:50	#8
Mavmb Old Skool Join Date: Feb 2002 Location: Phoenix, AZ Posts: 2,169	Re: What\'s a ram air turbine? A rat??? Cool, I've never heard of them before! So that is their purpose -- to provide electral power? Do they serve any other purpose?

January 9th, 2003, 16:13	#9
zombie5225 Junior Member Join Date: Aug 2001 Location: Baltimore MD Posts: 117	Re: What\'s a ram air turbine? The RAT on he 757 is located aft of the landing gear on the co pilots side. I heard that a few years ago a guy was standing under it while the plane was being unloaded. Either the pilot or a mechanic hit the button by mistake and I guess you guys can figure out the rest.

January 10th, 2003, 20:51	#10
Vref Newbie Join Date: Oct 2002 Posts: 5	Re: What\'s a ram air turbine? The 777 RAT provides backup electrical and/or hydraulic power to the critical systems on the aircraft in the event of MAJOR electrical or hydraulic failure. A dual flame out would be an example. It would provide essential flight instruments and certain primary flight controls until you got an engine going or the apu comes online. With just the APU and RAT you would have full instumentation (all glass Cockpit), controllability (primary flight controls),and the worlds largest glider!

January 12th, 2003, 14:50	#11
I_Money Moderator Join Date: Jul 2000 Location: Socal Posts: 5,650	Re: What\'s a ram air turbine? Till they can get the IFE and coffee machine on it, there is still room for improvement.

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