QR 787 pilot question

[Panama Jack]

Quick question to the 787 pilots-

With the 787 Air Conditioning not being fed from engine bleeds, how comfortable is the inside of the 787 flight deck & pax cabin both on ground and on short sectors during these hot & humid summer days like we are experiencing over the last week here in the Gulf?

[J.L.Seagull]

PJ,

Firstly, the 787 doesn't have a bleed system. i.e. no bleed supply from the APU or ENGINES!!!

Electrically driven compressors supply the air-conditioning packs.

Going by the 777's reputation for over-engineered packs, I can only assume that the 787 will be similar.

[Panama Jack]

Thanks for the response, J.L. Seagull. I am a little surprised and disappointed that no QR 787 pilot has answered yet. Perhaps they are all busy flying?

The reason I ask is that I remember reading that, because AC is not being supplied by Air Bleed, the upshot is that cabin air during flight will not be as dry as on traditional airliners (where the bleed air through the packs really dries the air out) and therefore offers an air humidity that is a little more comfortable to humans.

However, given the hot and suffocatingly humid conditions around the Gulf over the last few weeks, the idea of dried-out, conditioned air sounds really appealing. I have yet to look forward to flying on a 787.

[Airmann]

I remember watching a airbus or Boeing video where they were proudly showing off a couple of plastic curtains that they had designed with Emirates for use on open doors in the Summer time in the ME.

I was wondering if those plastic curtains are still in use, and if so why don't other ME airlines install some

[givemewings]

I have seen those curtains last year but since the most flights I've done this summer have been at night we haven't had them. Come to think of it, no mention of them in any crew updates this summer, however that does not necessarily mean they're not being used... anyone else seen them around? I did a few Jeddah flights and we did not have them, think they're only used in DXB.

[celco]

787 uses bleed air for engine anti-ice and to answer the original question the flight deck and cabin temperature is controlled very well on the ground even in 45 deg temperatures, probably better than 777.

[40&80]

Toxic cabin air liability still seems an ongoing legal issue within the aviation industry.....I would guess Boeing took this liability seriously and the B787 by design solved any toxic air liability.

[Reverb_SR71]

Fuel consumption

Hey guys , may be this is a little off topic but its related to the bleedless anti ice .

In a normal bleed based anti ice system there is an increase in fuel consumption as the system is turned on , this is shown in the cruise performance tables etc .

My question is does the 787s bleed system have any similar effects ? cause normal electrical loads run off the IDG dont have any such problems i think ? . or am i missing something here . Thanks

[goeasy]

summer curtains

'Another' airline nearby uses the plastic curtains etc in Summer. Great idea but must be hassle for those working through them.