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747classic
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Re: Boeing 777X Testing Thread - 2019

Tue May 14, 2019 2:59 pm

zanl188 wrote:
Does Boeing build a new fatigue test rig for every new aircraft? Or is it reconfigured and reused?


The last fatigue test rig was used 10 years ago for the 787. AFAIK the 777-X rig structure is a new built, see below.
The hydraulic actuators and control system could be (partly) re-used.

787 fatigue testing in 2009, KPAE

Image

Original uploaded by Matt Cawby at twitter, see : https://twitter.com/mattcawby/status/11 ... 9895434241
Operating a twin over the ocean, you're always one engine failure from a total emergency.
 
JamesAlice
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Re: Boeing 777X Testing Thread - 2019

Wed May 15, 2019 3:36 pm

How long does it take to test? Is it something that runs 24/7?
 
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RRUltrafan
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Re: Boeing 777X Testing Thread - 2019

Thu May 16, 2019 6:14 am

I'd assume that they would test the fuselage strength through increasing and decreasing pressure over different gradients and time scales. Then the wings will be tested, and due to the manpower that would need to be around to monitor the situation, i doubt that it will be running 24/7.
"Everything has an end, but, only the sausage has two" - Albert Einstein
 
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77west
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Re: Boeing 777X Testing Thread - 2019

Thu May 16, 2019 6:35 am

I believe they continue to run the fatigue tests until well after EIS...
77West - AW109S - BE90 - JS31 - B1900 - Q300 - ATR72 - DC9-30 - MD80 - B733 - A320 - B738 - A300-B4 - B773 - B77W
 
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747classic
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Re: Boeing 777X Testing Thread - 2019

Thu May 16, 2019 6:36 am

JamesAlice wrote:
How long does it take to test? Is it something that runs 24/7?


According following Boeing video about B787 fatigue testing, the tests were performed 24/7 during 3 years to simulate 100.000 flightcycles.
See : https://www.youtube.com/watch?v=TH9k9fWaFrs
Operating a twin over the ocean, you're always one engine failure from a total emergency.
 
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bikerthai
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Re: Boeing 777X Testing Thread - 2019

Thu May 16, 2019 11:50 am

RRUltrafan wrote:
I'd assume that they would test the fuselage strength through increasing and decreasing pressure over different gradients and time scales. Then the wings will be tested, and due to the manpower that would need to be around to monitor the situation, i doubt that it will be running 24/7.


There are occasions when the wings get tested separately. But the final fatigue test is performed with fuselage and wing loads at the same time. The purpose is to simulate GAG with, just with an accelerated load profile. 24/7 with stoppage for inspection. There is not much manpower required to monitor the tests.

bt
Intelligent seeks knowledge. Enlightened seeks wisdom.
 
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mfranjic
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Re: Boeing 777X Testing Thread - 2019

Mon May 20, 2019 7:07 pm


Image.According to the reports confirmed by several sources, the Image.777X’s engines have finished their flight tests, being tested in the Mojave desert aboard a modified Image.747-446 Propulsion Test Platform (PTP); MSN.26355 / LN 1024, reg. N747GF, replacing one of its four Image.CF6-80C2B1F, twin-shaft, high-bypass, turbofan engines (fan diameter: 2.362,0 mm / 93,0 in; BPR: (4,97-5,31):1; engine architecture: 1F+4LPC–14HPC2HPT–5LPT), OPR: (27,1-31,8):1, rated at 254,26 kN / 25.927 kgf / 57.160 lbf, with the new Image.GE9X-105B1A, twin-shaft, high-bypass, turbofan engine (fan diameter: 3.403,6 mm / 134,0 in; BPR: 10,0:1; engine architecture: 1F+3LPC–11HPC〧2HPT–6LPT), OPR: 61,0:1, rated at approximately 467,06 kN / 47.627 kgf / 105.000 lbf. The General Electric company acquired its Boeing 747-446 flying testbed from Japan Airlines (reg. JA8910), modified it (winglets have been removed), strengthened the aircraft’s wing and strut to accommodate test engines.

………Image

In January 2017 GE Aviation accomplished the last flight with their Image.747-121 Flying Test Bed; MSN.19651 / LN 25, reg. N747GE, powered by four Image.JT9D-7A, twin-shaft, high-bypass, turbofan engines (fan diameter: 2.340,0 mm / 92,3 in; BPR: 5,0:1; engine architecture: 1F+3LPC–11HPC2HPT–4LPT), OPR: 23,4:1, rated at 205,29 kN / 20.933 kgf / 46.150 lbf ( 212,05 kN / 21.623 kgf / 47.670 lbf with water injection ).

The General Electric company acquired its Boeing 747-121 flying testbed from Pan Am (reg. N744PA) in 1992, submitted it through the modifications like removing seats, strengthening the left wing and tail for flight testing and installing data systems. It began operations with General Electric in 1993 at its Flight Test Operation facility, which was then located in Mojave, California.

Image

Image above:.(Please click for a larger view).GE Aviation’s Image.747-121 Flying Test Bed during the testing of the Image.GE90-115B, twin-shaft, high-bypass, turbofan engines (fan diameter: 3.251,2 mm / 128,0 in; BPR: 9,0:1; engine architecture: 1F+4LPC–9HPC〧2HPT–6LPT), OPR: 42,0:1, rated at 513,95 kN / 52.408 kgf / 115.540 lbf. During the certification testing at GE's outdoor test facility in Ohio, in 2002, the GE90-115B, twin-shaft, high-bypass turbofan set a world record reaching 568,93 kN / 58.014 kgf / 127.900 lbf of thrust. The engine ran for approximately 60 hours at triple red-line conditions: maximum fan speed N1 - 2.617 rpm (111,1 %), maximum core speed N2 - 11.321 rpm (121,3 %) and maximum exhaust gas temperature EGT - 2.013 °F / 1.100,6 °C, all that to evaluate the engine at its operational limits.

The Image.747-121 Flying Test Bed, reg. N747GE, provided critical flight data on more than 11 distinct engine models and 39 engine builds, including widebody engines like the Image.GE90, Image.GEnx and the Image.GP7200, Image.CF34 engines for regional jets, narrow body engines like Image.CFM56 and Image.LEAP, and the Image.Passport for the business aviation. With General Electric, the historic Boeing 747 aircraft completed more than 3.600 flight hours and 775 cycles before its final flight in January 2017. Even it got a new livery in 2015, replacing the GE Aircraft Engines’s old paint scheme with the GE Aviation’s …

In 2016 the first Image.GE9X test engine completed its test runs. In 375 cycles it completed 335 hours of testing that were including evaluation of performance during water ingestion, overheating, crosswinds, blade out, hailstorm testing, icing tests, bird ingestion, block or endurance testing and testing in extremely cold temperatures. The company's first round of Image.GE9X airborne testing was delayed more than two months in 2018 after engineers discovered unexpected wear on "lever arms" that alter the pitch of vanes inside the engine's compressor. The engine finally got airborne in March 2018 when General Electric began an initial round of airborne tests that lasted until early May. That round involved 18 flights and 105 hours of flight time, allowing GE to study high-altitude performance and to compare performance during cruise to ground-test data.

Image

GE Aviation’s GE9X, twin-shaft, high-bypass, turbofan engine, aimed for the propulsion of the future Image.777-8 /-9 aircraft (MTOW: 775.000 lb / 351.534 kg), returned to the skies on 10. Dec 2018 for a second round of airborne testing during which the engine maker evaluated the powerplant’s software and performance in hot-and-high conditions. Testing concluded following 18 flights and 320 flight test hours.

The test Image.777X aircraft; MSN 64240 / LN 1567, reg. N779XW, powered by two Image.GE9X-105B1A, twin-shaft, high-bypass, turbofan engines (fan diameter: 3.403,6 mm / 134,0 in; BPR: 10,0:1; engine architecture: 1F+3LPC–11HPC〧2HPT–6LPT), OPR: 61,0:1, rated at approximately 467,06 kN / 47.627 kgf / 105.000 lbf is in the process of preparing to begin a series of testing, expected to take its first flight later this spring. Following this testing, it is expected of receiving 2019 certification and entering the service in late 2020 with Emirates as the launch cutomer. The aircarft become well known for its new folding wingtips, which fold up to reduce the aircraft’s wingspan when it’s on the ground. However, when the aircraft is flying, they are folded out to increase the lift generated.

Image

GE Aviation also plans to develop the versions of the GE9X turbofan engine with 93.000 lbf and 102.000 lbf of thrust, according to regulatory filings with the FAA. Those engines could power the other Image.777X aircraft variants…
……
…….GE9X-105B1A
…….GE9X-105B1A1
…….GE9X-105B1A2
…….GE9X-105B1A3
…….GE9X-102B1A
…….GE9X-102B1A1
…….GE9X-102B1A2
…….GE9X-102B1A3
…….GE9X-93B1A

Mario
"Only a life lived for others is a life worthwhile" - Albert Einstein
 
xwb777
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Re: Boeing 777X Testing Thread - 2019

Tue May 21, 2019 8:30 pm

When will Emirates B779 enter production?
 
Sooner787
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Re: Boeing 777X Testing Thread - 2019

Tue May 21, 2019 8:37 pm

xwb777 wrote:
When will Emirates B779 enter production?


I believe EK's first frame is in final assembly right now, but it might be
one of the test frames and won't be the fist copy delivered to EK.

Looking forward to seeing EK's B779's at DFW : )
 
Spetsnaz55
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 12:27 am

First frame for Emirates is about to begin final assembly. 2nd frame already has the Emirates colors on the wingtips and tail. Looks really good. Gonna be some official pictures soon
 
JayinKitsap
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 1:36 am

Lightsaber posted the following in the A220 thread
Never mind, I see fatigue testing complete and testing for residual strength.
https://www.iabg.de/en/news-events/deta ... 00-fluege/

Note: 3x in lab = 1x certified

So new testing will have to start for a longer life. I'd bet, if a few hundred more sell, that new tests start.

Note that this data supported MTOW increase. I would bet new test sections are built. But at a certified life of 15,000 cycles and about 23,000 hours per year of testing, We are talking about starting an 8+ year effort.

Lightsaber


It takes years but after the first few months of testing it is probably unmanned on nights and weekends. If 100 cycles per day that is 1,800 days or 5 years. So they were at more like 150 per day to finish in 3 years. Probably an 8 hour shift per week off for the inspections.
 
MileHFL400
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 2:11 am

Shouldn’t first flight have happened by now?!
Thanks and best Regards
AA
 
majano
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 7:01 am

MileHFL400 wrote:
Shouldn’t first flight have happened by now?!

I have followed this thread and the roll-out thread religiously. The most repeated yet unanswered question has been when is the first flight date. There was a date of 13 April mentioned, but I could get people out of a job by mentioning it.

The aircraft was unveiled "internally" just over two months ago and commenced ground testing immediately. Fuel tests took place about a month ago. So, my question would be - how soon after roll-out or unveiling have first flights happened historically? Secondly, if EIS is planned for some time in 2020, when should first flight happen to meet the EIS date? This depends very much on the length of the flight testing programme which is not in the public domain. A long winded way of saying no one, other than Boeing, knows whether first flight should have happened by now.
 
OldAeroGuy
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 5:52 pm

The initial 777 roll out to first flight was a little over 2 months.

From Wikipedia:

"On April 9, 1994, the first 777, line number WA001, was rolled out in a series of 15 ceremonies held during the day to accommodate the 100,000 invited guests.[52] The first flight took place on June 12, 1994"

The 777-9 first flight date must be getting very close.

May be they're waiting until June 12 so it will be on the 25th Anniversary of the 777-200 (WA001) first flight.
Airplane design is easy, the difficulty is getting them to fly - Barnes Wallis
 
Sooner787
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 6:56 pm

OldAeroGuy wrote:
The initial 777 roll out to first flight was a little over 2 months.

From Wikipedia:

"On April 9, 1994, the first 777, line number WA001, was rolled out in a series of 15 ceremonies held during the day to accommodate the 100,000 invited guests.[52] The first flight took place on June 12, 1994"

The 777-9 first flight date must be getting very close.

May be they're waiting until June 12 so it will be on the 25th Anniversary of the 777-200 (WA001) first flight.


Perhaps first flight has been delayed until the MAX 's are back in the air ?
I can imagine lots of 777x flight test engineers being plucked to help get the MAX
jets modifed, tested and cleared for service
 
mxaxai
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 7:29 pm

The A320neo took ~ 3 months from roll out to first flight, first delivery was 1.5 years later. If Boeing manages to do the first flight this summer, which seems reasonable, delivery in 2020 should still be possible. They'll probably do it once the 737 max issues calm down.
 
StTim
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 7:37 pm

mxaxai wrote:
The A320neo took ~ 3 months from roll out to first flight, first delivery was 1.5 years later. If Boeing manages to do the first flight this summer, which seems reasonable, delivery in 2020 should still be possible. They'll probably do it once the 737 max issues calm down.


The 777X is a much bigger upgrade to the 777 than the neo was to the 320. The completely new wing must add quite a bit more testing into the campaign.
 
Spetsnaz55
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 7:53 pm

It's not ready for first flight yet. Still being worked on every day.
 
OldAeroGuy
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 7:58 pm

Sooner787 wrote:
OldAeroGuy wrote:
The initial 777 roll out to first flight was a little over 2 months.

From Wikipedia:

"On April 9, 1994, the first 777, line number WA001, was rolled out in a series of 15 ceremonies held during the day to accommodate the 100,000 invited guests.[52] The first flight took place on June 12, 1994"

The 777-9 first flight date must be getting very close.

May be they're waiting until June 12 so it will be on the 25th Anniversary of the 777-200 (WA001) first flight.


Perhaps first flight has been delayed until the MAX 's are back in the air ?
I can imagine lots of 777x flight test engineers being plucked to help get the MAX
jets modifed, tested and cleared for service


Nine women working together can't produce a baby in one month. ;)
Airplane design is easy, the difficulty is getting them to fly - Barnes Wallis
 
mxaxai
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Re: Boeing 777X Testing Thread - 2019

Wed May 22, 2019 8:33 pm

OldAeroGuy wrote:
Sooner787 wrote:
OldAeroGuy wrote:
The initial 777 roll out to first flight was a little over 2 months.

From Wikipedia:

"On April 9, 1994, the first 777, line number WA001, was rolled out in a series of 15 ceremonies held during the day to accommodate the 100,000 invited guests.[52] The first flight took place on June 12, 1994"

The 777-9 first flight date must be getting very close.

May be they're waiting until June 12 so it will be on the 25th Anniversary of the 777-200 (WA001) first flight.


Perhaps first flight has been delayed until the MAX 's are back in the air ?
I can imagine lots of 777x flight test engineers being plucked to help get the MAX
jets modifed, tested and cleared for service


Nine women working together can't produce a baby in one month. ;)

I've yet to see an engineering department that doesn't feel understaffed ...

StTim wrote:
mxaxai wrote:
The A320neo took ~ 3 months from roll out to first flight, first delivery was 1.5 years later. If Boeing manages to do the first flight this summer, which seems reasonable, delivery in 2020 should still be possible. They'll probably do it once the 737 max issues calm down.


The 777X is a much bigger upgrade to the 777 than the neo was to the 320. The completely new wing must add quite a bit more testing into the campaign.

True but the A320neo took unusually long. I think the engines delayed it a bit, whereas the GE 9X looks pretty mature.
 
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bikerthai
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Re: Boeing 777X Testing Thread - 2019

Thu May 23, 2019 11:28 am

Sooner787 wrote:
Perhaps first flight has been delayed until the MAX 's are back in the air ?
I can imagine lots of 777x flight test engineers being plucked to help get the MAX
jets modifed, tested and cleared for service


The rollout was low key because of the MAX but they proceeded. Delay the 777 test schedule because of the MAX would exaserbate their problems.

There are plenty of flight test engineer within the 737 program to support the software fix flight test. After all they are not doing predelivery flights.

Spetsnaz55 wrote:
It's not ready for first flight yet. Still being worked on every day.

Probably busy installing all the flight test hardware.

bt
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majano
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Re: Boeing 777X Testing Thread - 2019

Thu May 23, 2019 4:15 pm

OldAeroGuy wrote:
The initial 777 roll out to first flight was a little over 2 months.

From Wikipedia:

"On April 9, 1994, the first 777, line number WA001, was rolled out in a series of 15 ceremonies held during the day to accommodate the 100,000 invited guests.[52] The first flight took place on June 12, 1994"

The 777-9 first flight date must be getting very close.

May be they're waiting until June 12 so it will be on the 25th Anniversary of the 777-200 (WA001) first flight.

Whilst trying to find information on the A350's roll-out to first flight, I came across this article in Airways: http://airwaysmag.com/uncategorized/the ... -timeline/.
Two to three months seems to be standard, the 787 time can be ignored as an outlier. Judging by this metric alone the 777X is still ok.
 
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mfranjic
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Re: Boeing 777X Testing Thread - 2019

Tue May 28, 2019 8:18 pm


Two Image.777X test aircraft; MSN 64240 / LN 1567, reg. N779XW and MSN 64241 / LN 1574, reg. N779XX, each powered by two Image.GE9X-105B1A, twin-shaft, high-bypass, turbofan engines (fan diameter: 3.403,6 mm / 134,0 in; BPR: 10,0:1; engine architecture: 1F+3LPC–11HPC〧2HPT–6LPT), OPR: 61,0:1, rated at approximately 467,06 kN / 47.627 kgf / 105.000 lbf, in the process of preparing for a series of aerial testing…

Click on the images below for a larger view

Image

Image


……….[color] Image
[color=#1D364B]…

Mario
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ikolkyo
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Re: Boeing 777X Testing Thread - 2019

Tue May 28, 2019 8:22 pm

How cool would it be if Boeing did a double first flight. Has that ever been done?
 
ZaphodHarkonnen
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Re: Boeing 777X Testing Thread - 2019

Tue May 28, 2019 9:39 pm

I really hope the folding wingtips are super successful. It'd be so cool to see such things be rolled out onto other sized aircraft.
 
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lightsaber
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Re: Boeing 777X Testing Thread - 2019

Tue May 28, 2019 9:48 pm

Spetsnaz55 wrote:
It's not ready for first flight yet. Still being worked on every day.

I'm being lazy, has it passed:
Low speed taxi
Fuel dock
High speed taxi
Aborted takeoff
?

There are weeks ahead before first flight.

Plus undisclosed shifted integration work.

Lightsaber
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lightsaber
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Re: Boeing 777X Testing Thread - 2019

Tue May 28, 2019 9:54 pm

mxaxai wrote:
I've yet to see an engineering department that doesn't feel understaffed ...

True. But for a decade it wasn't worth specializing in aerospace engineering. The last time I saw as many job offers for aerospace engineers was 1995-1997.


Everyone is jumping ship. The musical chairs have started. Not enough kids have the degrees and experience and almost half the workforce can retire.

Industry turnover is at low double digits per year and a quarter of the people leaving are retiring.
A quarter are switching industries (most out of engineering)
Half are jumping for pay.

Boeing needs to keep their engineers engaged.

Lightsaber
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Spetsnaz55
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Re: Boeing 777X Testing Thread - 2019

Wed May 29, 2019 12:54 am

lightsaber wrote:
Spetsnaz55 wrote:
It's not ready for first flight yet. Still being worked on every day.

I'm being lazy, has it passed:
Low speed taxi
Fuel dock
High speed taxi
Aborted takeoff
?

There are weeks ahead before first flight.

Plus undisclosed shifted integration work.

Lightsaber


Fuel dock yes but that's it. Other work going on right now to it before it starts taxi tests
 
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lightsaber
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Re: Boeing 777X Testing Thread - 2019

Wed May 29, 2019 12:58 am

Spetsnaz55 wrote:
lightsaber wrote:
Spetsnaz55 wrote:
It's not ready for first flight yet. Still being worked on every day.

I'm being lazy, has it passed:
Low speed taxi
Fuel dock
High speed taxi
Aborted takeoff
?

There are weeks ahead before first flight.

Plus undisclosed shifted integration work.

Lightsaber


Fuel dock yes but that's it. Other work going on right now to it before it starts taxi tests

Thank you. I should of put fuel dock first as cannot taxi without fuel nor fuel prior to that test.
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ikolkyo
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Re: Boeing 777X Testing Thread - 2019

Wed May 29, 2019 1:29 am

Maybe it's just the angles but that L2 door looks really close to the engine in these pictures, compared to the 77W there is a lot less space there.
 
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bikerthai
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Re: Boeing 777X Testing Thread - 2019

Wed May 29, 2019 11:42 am

lightsaber wrote:
Boeing needs to keep their engineers engaged.


There are plenty of engineers, just not in the US. Boeing is trying to set up a pipeline in India. There is much work ahead but the potential is there.

bt
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747classic
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Re: Boeing 777X Testing Thread - 2019

Thu May 30, 2019 7:09 am

First engine run ………………………..N779XW

N779XW, PAE, May 29th 2019
Image

Original uploaded by Katie Bailey at twitter, see : https://twitter.com/KPAE_Spotter/status ... 3244520448
Operating a twin over the ocean, you're always one engine failure from a total emergency.
 
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BlueSky1976
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Re: Boeing 777X Testing Thread - 2019

Thu May 30, 2019 7:38 am

I have to say: those folded wing tips start to grow on me... I wasn't a fan of their look in "folded" position at first.

Long live the Mighty Triple Seven. The queen slayer.
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747classic
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Re: Boeing 777X Testing Thread - 2019

Thu May 30, 2019 10:48 am

First 777-9 flight …… end of June

See : https://www.reuters.com/article/us-boei ... SKCN1SZ2SU
Operating a twin over the ocean, you're always one engine failure from a total emergency.
 
pugman211
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Re: Boeing 777X Testing Thread - 2019

Thu May 30, 2019 10:44 pm

Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile
 
ZaphodHarkonnen
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Re: Boeing 777X Testing Thread - 2019

Thu May 30, 2019 11:20 pm

pugman211 wrote:
Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile


Your phones share functionality will give you the option to copy a link.

https://help.twitter.com/en/using-twitt ... moment-url
 
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Revelation
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Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 12:22 am

ZaphodHarkonnen wrote:
pugman211 wrote:
Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile


Your phones share functionality will give you the option to copy a link.

https://help.twitter.com/en/using-twitt ... moment-url


Tips-up tweet: https://twitter.com/mattcawby/status/11 ... 7790655488
Wake up to find out that you are the eyes of the world
The heart has its beaches, its homeland and thoughts of its own
Wake now, discover that you are the song that the morning brings
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carlokiii
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Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 12:28 am

pugman211 wrote:
Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile

Posting the picture for easy reference.
Image
Source

I notice that only one wingtip was engaged with the port side still up. Interesting.
 
9Patch
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Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 1:14 am

par13del wrote:
Is the improvement at the expense of greater interior noise?
It will be a decade or more before folks forget how quite the A380 is and make the comparison.

Which just goes to show you, 'quiet' doesn't sell planes.
 
9Patch
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Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 1:22 am

lightsaber wrote:

Industry turnover is at low double digits per year and a quarter of the people leaving are retiring.
A quarter are switching industries (most out of engineering)
Half are jumping for pay.

Which industries are they jumping to?
What pays better?
 
pugman211
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Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 3:38 am

carlokiii wrote:
pugman211 wrote:
Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile

Posting the picture for easy reference.
Image
Source

I notice that only one wingtip was engaged with the port side still up. Interesting.



I thought the tip you see up is from the other 779 parked next to it?
 
pugman211
Posts: 468
Joined: Thu Dec 20, 2012 1:55 pm

Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 3:39 am

ZaphodHarkonnen wrote:
pugman211 wrote:
Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile


Your phones share functionality will give you the option to copy a link.

https://help.twitter.com/en/using-twitt ... moment-url



Thanks for the help
 
carlokiii
Posts: 133
Joined: Sun Oct 04, 2015 11:03 am

Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 9:30 am

pugman211 wrote:
carlokiii wrote:
pugman211 wrote:
Just seen a post on Twitter saying the wingtips have been lowered on the 779 today.

Not sure how to post the link on mobile

Posting the picture for easy reference.
Image
Source

I notice that only one wingtip was engaged with the port side still up. Interesting.



I thought the tip you see up is from the other 779 parked next to it?

I initially thought that too but this photo below (taken before the photo above) clearly shows that the adjacent 779 is quite a distance from the subject 779. The root of the wingtip also shows that this folded wingtip is on the port side.

747classic wrote:
First engine run ………………………..N779XW

N779XW, PAE, May 29th 2019
Image

Original uploaded by Katie Bailey at twitter, see : https://twitter.com/KPAE_Spotter/status ... 3244520448
 
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Stitch
Posts: 26296
Joined: Wed Jul 06, 2005 4:26 am

Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 2:51 pm

Per the ACAP, the folding wingtips cannot normally be lowered while parked at a gate, but maintenance can override that system inhibit logic if necessary. Perhaps that allows the wingtips to be raised and lowered individually and not in a pair and that is what we are seeing? It is also possible that the wingtip was manually lowered by ground crew.
 
pabloeing
Posts: 579
Joined: Wed Dec 10, 2014 3:00 pm

Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 3:33 pm

 
User avatar
Revelation
Posts: 20892
Joined: Wed Feb 09, 2005 9:37 pm

Re: Boeing 777X Testing Thread - 2019

Fri May 31, 2019 9:40 pm

Wake up to find out that you are the eyes of the world
The heart has its beaches, its homeland and thoughts of its own
Wake now, discover that you are the song that the morning brings
The heart has its seasons, its evenings and songs of its own
 
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747classic
Posts: 2590
Joined: Sat Aug 15, 2009 9:13 am

Re: Boeing 777X Testing Thread - 2019

Sat Jun 01, 2019 7:31 am

Trailing cone (for calibrating air data systems) has been attached to WH001, taxi tests appear to be imminent.

Image

Original uploaded by Matt Cawby at twitter, see : https://twitter.com/mattcawby/status/11 ... 0891927552
Operating a twin over the ocean, you're always one engine failure from a total emergency.
 
MileHFL400
Posts: 642
Joined: Sat Dec 05, 2015 11:42 am

Re: Boeing 777X Testing Thread - 2019

Sat Jun 01, 2019 9:13 am

Is it just me or does it seem like XW and XX will have their first flight within weeks of each other?
Thanks and best Regards
AA
 
morrisond
Posts: 1171
Joined: Thu Jan 07, 2010 12:22 am

Re: Boeing 777X Testing Thread - 2019

Sat Jun 01, 2019 11:00 am

Someone on MattCawby wrote that June 21 could be first flight. Right after the industry days at Paris - Maybe to try to change the narrative back to Boeing?
 
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qf789
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Posts: 8596
Joined: Thu Feb 05, 2015 3:42 pm

Re: Boeing 777X Testing Thread - 2019

Sun Jun 02, 2019 4:38 pm

According to Tim Clark first flight is 26 June

https://twitter.com/jonostrower/status/ ... 30944?s=21
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