B-787 Apu

Maximilian_Jenius

Maximilian_Jenius

Super User
I hear the B-787 is going to be 100% electric. Were (Honeywell) supplying the APU anyone know how that APU is going to work being electric.

I obviously don't have the clearance so I'm sure the engineers round here won't tell me nothing if I ask. So I pose the question to you guys & gals!
 
Maximillian_Jenius said:
I hear the B-787 is going to be 100% electric. Were (Honeywell) supplying the APU anyone know how that APU is going to work being electric.

I obviously don't have the clearance so I'm sure the engineers round here won't tell me nothing if I ask. So I pose the question to you guys & gals!
Click to expand...

Did Boeing change suppliers? I was looking up 787-APU's and came across this:

http://findarticles.com/p/articles/mi_m0CWU/is_2005_Nov_16/ai_n15856846

It listed a different supplier. That being said, I imagine it is going to work the same as other APU's. It will provide Auxilary Power.... :D
 
Maximillian_Jenius said:
I hear the B-787 is going to be 100% electric. Were (Honeywell) supplying the APU anyone know how that APU is going to work being electric.

I obviously don't have the clearance so I'm sure the engineers round here won't tell me nothing if I ask. So I pose the question to you guys & gals!
Click to expand...
When they say that the airplane is going to be 100% electric, they mean that there will not be any systems powered by bleed air. So, there will be a 'normal' APU. The only thing is, it will not provide any air. The main engines will be started with two large starter generators, the cabin will be pressurized with electric superchargers, and who knows what they are doing for wing anti-icing. I'm guessing heated wings, but there are several other possibilities.
 
JEP said:
Did Boeing change suppliers? I was looking up 787-APU's and came across this:

http://findarticles.com/p/articles/mi_m0CWU/is_2005_Nov_16/ai_n15856846

It listed a different supplier. That being said, I imagine it is going to work the same as other APU's. It will provide Auxilary Power.... :D
Click to expand...

Oh wow...I stand corrected. Were in just about every recent Boeing plane so I just assumed that we'd be the APU supplier for the 787.

I do know from a meeting we had via telleconference with the CEO/Chairman that we are trying hard to be in the cockpit. With the FMS,autopilot and LCD screens and such.
 
The engines will be all-electric too. They won't use gas turbines, but rather superconducting magnets that accelerate air to a cold-plasma state in a process called magnetoaerodynamic propulsion. Neato, huh? No more reliance on jet fuel!
 
Maximillian_Jenius said:
Thanks google king! So looks like we did win the FMS stuff. I bet that Honeywell mngmt is nashing their collective teeth at losing out to Hamilton Sunstrand in terms of APU's.

A Honeywell APU is in every Boeing from the 757-777.
Click to expand...

So it's on the 75, 76, and 77? ;)
 
I was in DFW the other day and the APU just died, for no reason. Had to do an air start. That plane was cursed. I wrote up the autothrottles, too, which caused me a major problem later on. Airplanes piss me off....
 
DE727UPS said:
I was in DFW the other day and the APU just died, for no reason. Had to do an air start. That plane was cursed. I wrote up the autothrottles, too, which caused me a major problem later on. Airplanes piss me off....
Click to expand...

Well tell your company to put a spare in the plane and send it on home. I'll help fix it up good! PHX is the only Honeywell APU & engine repair station so I see it all!!!

:)
 
CapnJim said:
The engines will be all-electric too. They won't use gas turbines, but rather superconducting magnets that accelerate air to a cold-plasma state in a process called magnetoaerodynamic propulsion. Neato, huh? No more reliance on jet fuel!
Click to expand...
Don't worry, some of us got it.


:D
 
ananoman said:
When they say that the airplane is going to be 100% electric, they mean that there will not be any systems powered by bleed air. So, there will be a 'normal' APU. The only thing is, it will not provide any air. The main engines will be started with two large starter generators, the cabin will be pressurized with electric superchargers, and who knows what they are doing for wing anti-icing. I'm guessing heated wings, but there are several other possibilities.
Click to expand...

Bleed air will be used for anti-ice - just not for pressurization and air conditioning - as I understand it.

I'd be stunned to find that engine start wasn't going to be via an air driven starter - but I guess you never know......
 
DE727UPS said:
I was in DFW the other day and the APU just died, for no reason. Had to do an air start. That plane was cursed. I wrote up the autothrottles, too, which caused me a major problem later on. Airplanes piss me off....
Click to expand...


Oh god, not an air start, say it ain't so, and no auto throttles, whatever did you do?????



I kid, I kid, put away the mod bat.:nana2:
 
CFIse said:
Bleed air will be used for anti-ice - just not for pressurization and air conditioning - as I understand it.

I'd be stunned to find that engine start wasn't going to be via an air driven starter - but I guess you never know......
Click to expand...
The engines are going to be electric start. No bleed air at all, for anything...

Besides the high use of composites, Boeing is really pushing the envelope with the 787. So, while it is fun to gloat about the recent problems at Airbus, I will be very supprised if Boeing can deliver this beast on time.
 
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