Airbus RAT
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Joined: Mar 2006
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From: Choroni, sometimes
Airbus RAT
Let's say your FCM doesn't have a speed limit for the RAT if you actually have to use it.
If you do a test flight, suddenly a speed limit of 230 kts has to be observed.
Does this make any sense?
If you do a test flight, suddenly a speed limit of 230 kts has to be observed.
Does this make any sense?
..good comparison mate...Ive always thought of aussies as Rats....good job wally.it,s amazing how great mindS think alike.
..PB
Joined: Aug 2005
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From: fairly close to the colonial capitol
How big is the RAT for the A380? Perhaps it's big enough to be called a KANGA-roo!
Where is it situated and what capacity of electrics and hydraulics?
Where is it situated and what capacity of electrics and hydraulics?
Wallaby sized ? - or maybe wallaroo ?
Cheers !
just kidding on the location.
Joined: May 2005
Posts: 271
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From: On a good day - at sea
If you're referring to the recent AD, the limit applies to RAT deployment during Flight Tests only. The way it was explained to me was that some regulatory agencies require periodic RAT verification flights. Airbus found that this type of repeated testing above 230 kts (I thought it was 250) led to fatigue cracks and subsequent blade failure. If it's a real emer deployment then you are free to disregard the speed limit completely.
Only half a speed-brake
Joined: Apr 2003
Posts: 4,459
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From: Commuting not home
Well, as an back-up emergency power generator, of course!!! 
Just trap it in barrel-cage and bring on-line. Larger rats required for 380 to supply jacuzzi heating. What is beyond me, why do they put it on the roof? Let's face it, somebody needs to feed the beast! 
Just trap it in barrel-cage and bring on-line. Larger rats required for 380 to supply jacuzzi heating. What is beyond me, why do they put it on the roof? Let's face it, somebody needs to feed the beast!
Joined: Dec 2005
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From: Rural Virginia
Re-read "vapilot2004" 's post - he was KIDDING about the location of the RAT - it's not on top, it's actually under the pilot's seat to keep him awake! 
Seriously tho', it's just inboard of #2 donk, in a canoe on the trailing edge of the wing. In case of lost power, it's gotta deploy by gravity, and that means DOWN. Check out the IPC - oh, that's right, it's not published yet.
Employment has it's perks...
Cheers, y'all.
Seriously tho', it's just inboard of #2 donk, in a canoe on the trailing edge of the wing. In case of lost power, it's gotta deploy by gravity, and that means DOWN. Check out the IPC - oh, that's right, it's not published yet.
Employment has it's perks...
Cheers, y'all.
