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Old 6th Mar 2015, 13:17
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A320

Hi there. Can anyone tell me how many brake units there are on an A320? Is there one on the nose gear?


Cheers!


*Apologies, title is meant to say A320 Brakes*

Last edited by FlyVeryHigh-; 6th Mar 2015 at 13:22. Reason: Wrong title
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Old 6th Mar 2015, 14:34
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Hi There are 4 Brake Units. One for each Mainwheel. Nothing on the Nosewheels.
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Old 6th Mar 2015, 14:54
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Technically, and I really don't mean this to sound pedantic or smart - some A320s have "Spin Brakes" on the nosewheels. That is, friction brakes in the top of the NLG Bay that stop the nosewheel spin on retraction. I don't know if it was abandoned on later production aircraft, but there is an optional SB to remove them as they were deemed not necessary.

As an aside, the B727 is the only aircraft I have encountered with actual brakes on the nosewheels, are there any others?
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Old 6th Mar 2015, 17:18
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Many thanks for the information. Much appreciated spo!
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Old 6th Mar 2015, 17:43
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I have another question if you guys don't mind! If we are talking about carbon/carbon a320 braking units, does this mean that both rotors & stators are made from the carbon/carbon material?
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Old 6th Mar 2015, 21:47
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As an aside, the B727 is the only aircraft I have encountered with actual brakes on the nosewheels, are there any others?
I think Concorde did. Something to do with having a long leg and gyroscopic precession as the nose gear retracted.
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Old 8th Mar 2015, 10:37
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Indian Airlines have bogie main gear with 4 wheels on each main leg, so I presume there are 8 brake units on these aircraft.
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Old 8th Mar 2015, 12:27
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I believe the Convair CV880/990 had nose gear brakes too.
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Old 15th Mar 2015, 18:46
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Hello again.


Am I correct in thinking the following brake assembly has 4 stators, 3 rotors?


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Old 15th Mar 2015, 18:52
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Looks like four of each to me.

Thinking about it, there would be a stator at each end of the pack so four rotors and five stators.
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Old 15th Mar 2015, 19:11
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Many thanks TURIN! Its surprisingly difficult to find this information on the internet, meaning having to resort to counting them from an image is all I can really do at the moment!


Thanks again!
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Old 16th Mar 2015, 09:45
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TomU

"As an aside, the B727 is the only aircraft I have encountered with actual brakes on the nosewheels, are there any others?"

Yes, MAERSK AIR (Denmark) had brakes on the nose wheels on some of their B737, that flew into the Faroe Islands
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Old 16th Mar 2015, 13:42
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Back again. Does anyone have any idea what the brake temperature would usually be after a landing or rto? Im aware that t/o with a temp exceeding 150 degrees isn't allowed, but not sure which kind of temperature range would be hit after the landing or rto. Am I right in assuming approximately 600 degrees would be a good ball park figure?
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Old 17th Mar 2015, 01:38
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Very difficult to cite average temperatures as too many variables. 600°C not good, likely something wrong somewhere if it's just one brake at this temp ! Max take off temp for an A330/A340 from FCOM is 300°C


Don't quote me - memory items only
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Old 17th Mar 2015, 01:48
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The A320 brake unit has 4 rotors and 5 stators.
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