Where Are The APU's Located On The BAe 146/Avro RJ — Tech Ops Forum

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Where Are The APU's Located On The BAe 146/Avro RJ

BA From United States of America, joined May 2000, 11097 posts, RR: 68
Posted (10 years 9 months 1 week 4 days 9 hours ago) and read 4806 times:

I know that the BAe 146 and Avro RJ have four APUs. Where exactly are they located?

Any help would be greatly appreciated.

Regards.

"Generosity is giving more than you can, and pride is taking less than you need." - Khalil Gibran

14 replies: All unread, jump to last

Scaredflyer21 From United States of America, joined Oct 2000, 355 posts, RR: 0
Reply 1, posted (10 years 9 months 1 week 4 days 8 hours ago) and read 4792 times:

I believe one of the APU's is located under the first officer, thats what the ramp agent told me anyway.

Wilcharl From United States of America, joined Jun 2000, 1158 posts, RR: 3
Reply 2, posted (10 years 9 months 1 week 4 days 5 hours ago) and read 4781 times:

there are 4 Avco-Lycoming ALF-502 APUs under each wing, the exhaust points aft and by pointing it to the aft, our friend newtons laws of motion kick in and the opposite reaction thing makes the aircraft move forward
this thrust counteracts the drag. and not to get into aerodynamics, but the aircraft magicaly lifts off the ground thanks to the ingeniuus placement of the 4 apu's since they did this the 146 doesnt require any ENGINES!

Metwrench From United States of America, joined Aug 2001, 750 posts, RR: 3
Reply 3, posted (10 years 9 months 1 week 4 days 1 hour ago) and read 4776 times:

It's located in the empenage aft of the rear pressure bulkhead. Mfg. by Garrett, now a days known as Honeywell. When running at it's max it is capable of powering up one each; AC gen. DC gen, and two AC packs. However, if you try and utilize this unit to it's full capacity it is likely to explode and expell the turbine rotor right out the "S" duct onto the ramp as I have have witnessed.

HAWK21M From India, joined Jan 2001, 30162 posts, RR: 61
Reply 4, posted (10 years 9 months 1 week 3 days 21 hours ago) and read 4767 times:

Are you Sure FOUR APUs???.
It should be 1 APU & 4 Engines right!.
regds
HAWK.

Think of the brighter side!

Sabenapilot From Belgium, joined Feb 2000, 2663 posts, RR: 51
Reply 5, posted (10 years 9 months 1 week 3 days 17 hours ago) and read 4761 times:

Indeed-
the BAe146 has 5 turbine engines:
one in the tail and 4 under the wing.

Luv2cattlecall From United States of America, joined Sep 2007, 1648 posts, RR: 2
Reply 6, posted (3 years 7 months 2 weeks 9 hours ago) and read 4305 times:

Quoting HAWK21M (Reply 4):
Are you Sure FOUR APUs???.
It should be 1 APU & 4 Engines right!.
regds
HAWK.

It's a joke Wink

Think A340...

When you have to breaststroke to your connecting flight...it's a crash!

Starlionblue From Greenland, joined Feb 2004, 15102 posts, RR: 69
Reply 7, posted (3 years 7 months 2 weeks 8 hours ago) and read 4292 times:

Quoting Luv2cattlecall (Reply 6):
It's a joke Wink Think A340...

It's not as much of a joke as you think. Those cores are also used as APUs.

Tact Is For People Who Aren't Witty Enough To Be Sarcastic

Luv2cattlecall From United States of America, joined Sep 2007, 1648 posts, RR: 2
Reply 8, posted (3 years 7 months 2 weeks 7 hours ago) and read 4277 times:

Quoting Starlionblue (Reply 7):
It's not as much of a joke as you think. Those cores are also used as APUs.

Good point...but just because the A340's engine core can be used as an APU on a CRJ doesn't mean the A340 has four haird.....APUs!

When you have to breaststroke to your connecting flight...it's a crash!

Starlionblue From Greenland, joined Feb 2004, 15102 posts, RR: 69
Reply 9, posted (3 years 7 months 2 weeks 6 hours ago) and read 4267 times:

Quoting Luv2cattlecall (Reply 8):

Good point...but just because the A340's engine core can be used as an APU on a CRJ doesn't mean the A340 has four haird.....APUs!

The Avro's cores, not the 340's.

Tact Is For People Who Aren't Witty Enough To Be Sarcastic

WN700Driver From , joined Dec 1969, posts, RR:
Reply 10, posted (3 years 7 months 2 weeks 3 hours ago) and read 4222 times:

Those references to the A340 (200 & 300) having 5 APUs are just plain unfair. Everyone knows those things under their wings are hairdryers.

Jetlagged From United Kingdom, joined Jan 2005, 2372 posts, RR: 15
Reply 11, posted (3 years 7 months 2 weeks 3 hours ago) and read 4219 times:

Hairdryers with 32,000 lbs thrust each. Don't get your head too close to the nozzle. Wink

The glass isn't half empty, or half full, it's twice as big as it needs to be.

EMBQA From United States of America, joined Oct 2003, 9177 posts, RR: 14
Reply 12, posted (3 years 7 months 2 weeks 2 hours ago) and read 4205 times:

Quoting Scaredflyer21 (Reply 1):
I believe one of the APU's is located under the first officer, thats what the ramp agent told me anyway

No.. the only APU is mounted back in the tail...but the 'joke' of this thread is the 4 engines used on the BAe 146 and Avro's are also used in their core form as APU's on bigger aircraft.

"It's not the size of the dog in the fight, but the size of the fight in the dog"

Northwest727 From United States of America, joined Jul 2005, 475 posts, RR: 1
Reply 13, posted (3 years 7 months 5 hours ago) and read 3859 times:

I thought the engines used on the BAe146/Avro RJ are actually derivatives of helicopter engines...?

Jetlagged From United Kingdom, joined Jan 2005, 2372 posts, RR: 15
Reply 14, posted (3 years 7 months 3 hours ago) and read 3838 times:

Quoting Northwest727 (Reply 13):
I thought the engines used on the BAe146/Avro RJ are actually derivatives of helicopter engines...?

Yes indeed, the Lycoming T55 as used in the Chinook, but that's not such a good joke, apparently. Smile

The glass isn't half empty, or half full, it's twice as big as it needs to be.

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