Boeing 787 (partie 2)

massemini a écrit:Un petit début d' info sur le système d' aspiration de la couche limite

http://www.flightglobal.com/news/articles/farnborough-aero-secrets-of-boeings-new-dreamliner-401784/

Beochien a écrit:Non, Laurent, ce sont des centaines, voire des milliers de petits trous canalisant la dépression, qui on posé qq PB de désign, pour éviter qu'une chiure de mouche où un nid d'abeille ne les obstrue, j'ai même cru entendre parler d'un procédé de nettoyage spécifique !
Ça on l'a vu passer il y a une paire de mois !
La trappe, c'est peut être pour connecter le tuyau de nettoyage  


Ça n'en reste pas moins intéressant !

Bon, j'ai retrouvé !

http://www.bizjournals.com/seattle/blog/2014/05/powerwash-gets-the-bugs-off-boeings-secret-787-9.html?page=all

massemini a écrit:sur les 2 côtés de la dérive
Au moins à l' intrados des 2 empennages (pas de photo de l'extrados).

Jeannot a écrit:Plan de cabine du 788 de Xiamen Airlines avec 3 classes (237 sièges) dont 4 Firsts 18 Business et 215 Y en 9 de front.

Cold winter temperatures were a factor in the meltdown of a lithium ion battery that caused a Boeing 787 Dreamliner to make an emergency landing in Japan last year, the Asahi newspaper said, citing the conclusions of local investigators.

A Qatar Airways Boeing 787-800, registration A7-BCG performing flight QR-159 from Doha (Qatar) to Copenhagen (Denmark), was enroute at FL400 about 115nm north of Ankara (Turkey) when the crew decided to divert to Ankara due to decreasing engine oil quantity of the left hand engine (GEnx), but advised they were about to perform a normal landing with all other engine indications remaining normal. The aircraft landed safely on Ankara's runway 03L about 30 minutes later.

A replacement Boeing 787-800 registration A7-BCN was dispatched to Ankara and reached Copenhagen with a delay of 9 hours.

The occurrence aircraft is still on the ground in Ankara 57 hours after landing.

Maintenance found the aircraft landed with just sufficient oil to sustain normal engine operation, the rest had been leaked through a fitting attached to the gear box, requiring repairs by the engine manufacturer.

The US Federal Aviation Administration (FAA) on Wednesday grounded an Air India Dreamliner in Seoul to examine its engines. The American regulator’s move came after some other airline’s aircraft saw an inflight failure of its General Electric (GE) engine.
FAA then decided to ground all aircraft fitted with the same series of GE engines wherever they were and examine the engines before allowing them to take off. The problem, say sources, could be with the engine’s “angle valve” which work as the gear box.

Jeannot a écrit:Le premier 787 ...

Décidément je ne trouve pas cet avion beau. Mais bon je suis un peu partisan.

GE recently discovered that eight accessory gearboxes could have been made using an improper heat-treating process during production.
The discovery was made after an accessory gearbox failed on a 5 August flight by a [url=http://www.flightglobal.com/landingpage/Thomson Airways.html]Thomson Airways[/url] 787-8, the GE spokesman says. The flightcrew commanded an engine shutdown and made an emergency landing.
The Air India 787-8 is the only such aircraft in service that is equipped with both engines that are among the population of eight with the potential heat treatment problem, the spokesman says.