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The Boeing 787. Is it a Dream or a Dudd?

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The Boeing 787. Is it a Dream or a Dudd?

Old 21st May 2015, 11:31
  #21 (permalink)  
 
Join Date: Mar 2008
Location: Sydney
Age: 61
Posts: 680
Nothing wrong with the 787. I had the "privilege" to fly in one as a passenger with PornStar from Sydney- Honolulu. I have picked the emergency exit seat since I am a tad over 6 feet so I can stretch my legs. Mind you the flight was during the night so it was extremely smooth and I can't sleep unless I am in the cockpit....I thought it was a comfortable aircraft to be passenging. If you were into peeking outside the 40% larger windows were a plus...
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Old 21st May 2015, 13:00
  #22 (permalink)  
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Join Date: May 2008
Location: Australia
Posts: 53
Windows were great !

Apparentely take off and climb was de rated ref a lot ref previous posts here.

Ride however when it hit turbulance was like a cork bouncing in choppy water. The 777 seemed to push through turbulance - a lot better.

To me the 777 feels a lot more solid and sturdy BUT USES A LOT MORE FUEL.
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Old 21st May 2015, 19:44
  #23 (permalink)  
 
Join Date: Apr 2006
Location: South of the Equator
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Ride however when it hit turbulance was like a cork bouncing in choppy water. The 777 seemed to push through turbulance - a lot better.
Two words: Confirmation bias.
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Old 22nd May 2015, 16:25
  #24 (permalink)  
 
Join Date: Jul 2001
Location: Australia
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WW,
In my opinion, it is no better and no worse than a B767/200-300 at high level, which is what you would expect given the similar wing loadings.
Tootle pip!!
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Old 23rd May 2015, 11:18
  #25 (permalink)  
 
Join Date: Aug 2001
Location: Greater Aldergrove
Age: 48
Posts: 783
Electrics Though a smaller plane, the 787 has 4 times the electric generating power of the 777 1.4 gigawatts.
1.4GW? I think there might be a few extra zeroes in there somewhere
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Old 23rd May 2015, 14:35
  #26 (permalink)  
 
Join Date: Dec 2000
Location: Pasir Ris
Posts: 55
It was 20 Left
Same a applies for departures on 20 as well. You're sometimes kept below 6000 ft due to inbound traffic from the west and north west overflying a lot higher as they get radar vectored to the east of WSSS for the approach to 20.
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Old 25th May 2015, 04:54
  #27 (permalink)  
 
Join Date: Feb 2000
Location: Usually Oz
Posts: 733
Post

717tech,

An elctro-hyd pump is under rows 40-42 in the J* config. Just in front of Door 3L.

We know this because we just did a long sector. However, the pump is only associated [normal ops] with gear/flap selection and appears to be continuous with gear down. It is BLOODY loud!!

Otherwise, as pax, it's breeze.

G'day
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Old 25th May 2015, 12:31
  #28 (permalink)  
 
Join Date: Aug 2007
Location: between supple thighs
Posts: 236
Feather #3

The hydraulic pump noise you can hear is the Centre Demand Pump, it operates when,
System PX is low
on the ground for the first 3 min after the second engine is started, or
from takeoff thrust set until 2000' is exceeded,
flaps or slats in motion, or
during descent from when the gear lever is down and RA is less than 2000' until gs is less than 60kts.

There are 2 electric motor driven pumps to provide centre hydraulic pressure, they alternate between being primary pump and demand pump. Depending on the sector you may not hear the same hydraulic noises.
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Old 25th May 2015, 13:38
  #29 (permalink)  
 
Join Date: Feb 2000
Location: Usually Oz
Posts: 733
Thumbs up

Thanks Sleeve!

That also explains why it wasn't prominent on an earlier sector [last year.]

G'day
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