By: Cking - 20th April 2007 at 23:28
Where is the APU on the BAE-146? I always hear this loud noise coming from the undercarriage when im boarding one of these.
The APU on the 146/RJ is in the tail just forward of the air brakes.
The noise you hear from the main gear is from the brake cooling fans. The 146have them. They are an option on the A320 and the A330.
The APU as already stated provides electrical and pneumatic power to the aircraft. If it is U/S they have to provide electrical power and an airstart (an APU on a lorry) to start an engine at the gate. The aircraft is then pushed back onto the taxi way and the other engine is throttled up to provide the pnuematic pressure to turn the other engine.
When the aircraft is on stand the airlines do not like the APU being run because it costs a lot of money. The airlines prefer the aircraft to go onto the fixed electrical power provided by the airport.
If you want to hear a noisy APU go listen to an EMB-145! Those dreadful little piles of C*** give you a head ache if they are parked two stands away!
A330-300, Alitalia jacked MAN in last year
Rgds Cking
By: tommyinyork - 20th April 2007 at 22:48
back on an MD83 is deafening.
By: A330-300 - 20th April 2007 at 18:41
Another thing, do Alitalia operate at MAN now? Haven’t seen them at all lately, didn’t notice till now.
By: Arabella-Cox - 20th April 2007 at 17:59
Where is the APU on the BAE-146? I always hear this loud noise coming from the undercarriage when im boarding one of these.
By: Sam_Mc - 20th April 2007 at 17:33
Goff taught us well, didnt he?:D 😎 :rolleyes:
The APU, which is basically a turbine engine, will provide power for lighting, galley ovens power, air conditioning, and hydraulic pressure when the main engines are off.
Ive walked past a few parked up 747s at Heathrow and their APUs are very, very noisy.
that peice of knowledge had nothing to do with goff, honestly!:p :p
Sam:D
By: adamdowley - 20th April 2007 at 17:00
the bit you are seeing at the end (the noisy bit) is the APU (auxiliary power unit). it is used to provide independent power on the ground which would usually come from a ground starter trolley or the main engines themselves. it is also used to start the engines. however, they arent switched on all the time.
there is no such thing as a stupid question! hope that helps!
Sam
Goff taught us well, didnt he?:D 😎 :rolleyes:
The APU, which is basically a turbine engine, will provide power for lighting, galley ovens power, air conditioning, and hydraulic pressure when the main engines are off.
Ive walked past a few parked up 747s at Heathrow and their APUs are very, very noisy.
By: Sam_Mc - 20th April 2007 at 16:49
the bit you are seeing at the end (the noisy bit) is the APU (auxiliary power unit). it is used to provide independent power on the ground which would usually come from a ground starter trolley or the main engines themselves. it is also used to start the engines. however, they arent switched on all the time.
there is no such thing as a stupid question! hope that helps!
Sam
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April 20, 2007 at 4:42 pm