I guess Boeing is lucky to have such an excellent financial position to not get slaughtered by those losses.
I imagine Airbus would have had a harder time had the NEO faced a similar fate.
The issue is probably the 150 777X for the next 8-10 year period, is too much and the order needs to be amend for changes to its projected Business. Add the huge flux of incoming A359s, A339s, and 787s. I have no idea how the EK order book will look in the future, but I guess we will find out in th...Jump to post
That's also why I think the issue of shareholders and the board pushing back based on cost will go no where. He's a Chief Executive and he's making a strategy decision, not a tactical one, and that's what the Board hired him to do. The idea that a Board would be so upset over this deal that they'd ...Jump to post
Incorrect. The 787-10 has more thrust than the 787-9 with the same MTOW. You have extra drag from the longer fuselage and that requires extra thrust to meet the climb requirement. So the 777-10 could keep the same MTOW and would just need more thrust. The 787-10 was initially offered with 70,000-72...Jump to post
With 3 years on this site and nearly 600 posts i refuse to believe that you haven't heard of triple redline tests. Every engine flying today can make much more power than the certified numbers. That doesn't mean its good for the engine, so all engines are de-rated. It is just a by-product of the ce...Jump to post
glideslope900 wrote:Atlanta is much hotter than Detroit. The aircraft could experience sudden temperature changes going from the very warm southern US (ATL) into a freezing polar environment. These sudden temp fluctuations could possibly compromise aircraft structure.
Ok, so if it's the same trip burn and 12% more pax, can't you argue that the new wing gives you ~12% benefit over the old wing? Your 774ER chart seems to show this. The official 2-class passenger count for 77W is 396 in a 10-abreast configuration (Boeing's website). 779's longer fuselage added 20 m...Jump to post
Interesting. That's a great effort. In other words, the almost identical fuel burn of 779 vs 77W+GE9X indicates that the higher L/D of 779 compensates for the 13t higher DOW. Your numbers are in line with how engine SFC imprvements are the leading factor when it comes to fuel saving improvements tha...Jump to post
The most important elements for efficiency are the engines and they are all new on the 777x. The cabin is updated throughout as you admit. Weight comes from engines with bigger diameter that have higher bypass ratio and overall pressure ratio along with increased passenger and cargo capacity. Impro...Jump to post
a35k sales have plateaued though. in the last 3 years only like 20 have been ordered. that being said, the 778 isnt doing better, but if the 235k was so good over teh 778 you'd think more airlines would be ordering it. A35K has had more orders in the last 3 years than 779 and 778 combined (778 has ...Jump to post
I think the thing that some people find the most annoying is that many blue chip airlines who also operate A350 signed up for 777X as well, long after ordering A350, and no one seems interested in more A350-1000s. Really? A350-1000 has an identical capacity and an almost similar range to 778, now w...Jump to post
The 787-10 weighs 6,650kg more than the 787-9. The 787-9 burns 5600kg of fuel per hour. So the empty weight difference is only 70 minutes worth of fuel. At a cruise speed of 490knots it means the 787-10 range should be 600nm shorter. But in the real world the range difference is twice that. The 787...Jump to post
I really wonder why people get so angry about outsourcing. Our company does it, we outsourced the cleaning, the accounting and the hosting. There is nothing bad in that because why hire a cleaner for 2h a week when you can outsource it. The same goes for big companies, you can buy in expertise for ...Jump to post
For those discussing seat width, seat pitch, and cabin width, didn’t you forget something more important? What about nonstop flights vs connecting flights? The whole point of such a product is to offer direct flights on routes that were only possible through connecting flights. I think a 7 hour dire...Jump to post
It seems that a lot of 359s have suffered tech related cancellations since entering service. Monitoring this thread it seems as if a 359 flight is cancelled aat least several times a week. Are these teething issues? Without starting an A v. B war, can anyone provide further credible info on DLs 359...Jump to post
That all seems to disappear like the morning mist when we discuss the middle of the market gap. It is the market that created that gap, not the manufacturers. That's just a fact. That's a nice way of putting it. A widybody has to be significantly bigger in order to justify the unproportioned increa...Jump to post
Can we all agree that "widebody with narrowbody economics" cannot exist? Unless we are comparing different generation aircraft. This is just a marketing statement, it shouldn’t be taken seriously. The best example is to look at how 757 dominated the non-ER 767s. Those planes were of the s...Jump to post
4.8t-5.0t/hour depending on trip length. I am somewhat skeptical but perhaps you have a better idea. Sounds pretty good, the classic A330 burns around 5.5-6 ton/hr, the 787 somewhat less and it flies faster. Since Airbus promised a 12% fuel burn advantage over the A330ceo, those 4.8-5.0 t/hr figure...Jump to post
xwb565 wrote:From a lightly loaded a350 - 20t payload, 9.5hr trip, avg fuel burn only 5.1t per hour. What a difference getting higher sooner makes.
MSN 331 Air France first A359 (F-HTYA), out of paint at TLS https://pbs.twimg.com/media/D9SiH3_WkAA8udm?format=jpg https://pbs.twimg.com/media/D9SiH4CXoAEUWch?format=jpg https://pbs.twimg.com/media/D9SiH4IXoAASNdw?format=jpg https://pbs.twimg.com/media/D9SiH4LXUAA85bz?format=jpg https://twitter.com...Jump to post
With the ME3 loosing interest in the 777-8, there is an opportunity for Boeing to optimize its configuration to best suite QF needs for the Sunrise project. It could mean a slightly shorter -8 than initially considered. This would also better suite the future freighter version by giving it slightly...Jump to post
the 25t payload performance was consistent with that which seen on other sq flights inc ulr and the other flights. Didn't you forget something? You assumed that plane had no cargo (hence 25t payload), and you assumed this 25t payload is the limit for that range. Didn't you forget that this SQ fligh...Jump to post
1. SQ31 SFO-SIN, TOW 271t, payload 25t, 16 hours https://www.airliners.net/forum/viewtopic.php?t=1408737 nothing in that thread indicates a payload of 25t on that flight. Do we know for sure that it had zero cargo? SQ generates 9% of its revenue from belly cargo. that Airbus "brochure" ra...Jump to post
lightsaber wrote:despite all the noise made over folding wingtips, the amount of wing folded up is tiny.
So what about an emergency landing straight after take off? The landing gear has to be able to survive a landing at MTOW That is often why fuel is dumped prior to an emergency landing. The plane exceeds its MLW. So there will never be a scenario where the plane needs to get back on the ground witho...Jump to post
If you change flight software, regression testing is required. It is how I spent today.
It seems we are having some issues with the GE9X now as reported by Reuters. Anyone has more info?
https://www.reuters.com/article/us-boei ... SKCN1T62KU
Would that delay the first flight?
But the particular aircraft you cite is a test aircraft, with very minimal, if not nothing, cabin features. 135t is the OEW of a bare-bone A359 no real airline could ever operate. The real A359 with all the heavy premium seats etc. is much heavier. No, the link is presenting a chart of a default A3...Jump to post
6T MTOW boost would be great for 789/10 performance. However, it would also benefit from tank capacity increase. At current 101 Tons, at the edge of the envelope it will max out on fuel while still before hitting the MTOW. I am wondering if they have to increase the thrust for that. Is it declared ...Jump to post
Let’s start with the 300 pax remark. I think it looks to rounded to the nearest hundred That I agree with. Let’s not forget that QF 789 has 238 seats even without the F class. That’s 82% of the 789 default 290 seats. If we assume they would use the same seating density on the Sunshine Project frame...Jump to post
Well, their CFO has made it clear that incoming A359s are planned to replace their aging 777-200.
https://www.flightglobal.com/news/artic ... 0s-440887/
You did the calculations for the A350 and 777X a few posts up but may I ask you to break-down the calculation for the 787 effective span? Please. I just followed the rule of thumb that a raked wingtip adds 80% of the wingtip's length to the physical wingspan, and I roughly assumed a 787's wingtip i...Jump to post
It is the same. The A350-900 MTOW is 10% heavier than the 787-9 (280T vs 254T). The A350-900 has 7.5% more span (64.75m 60.12m) The 777-8 MTOW is 11% heavier than the A358-1000 (351T vs 316T). The 777-8 has 9.5% more span (71.8m vs 64.75m) Now this clearly shows you are wrong. The 777-8 wing is cle...Jump to post
I just can't believe how hipocritical you are. You always say the A350-900 is better than the 787-9 because it can lift more, that the extra weight of the A350 is not an issue because it has a bigger wing. All of this applies to the 777X. Now you say the lighter plane with the smaller wing is bette...Jump to post
You have to remove the fuselage width from the wingspan. That then gives you the size of the actual wings. No, it doesn't work that way! The wingspan is only the horizontal distance between the two wingtips. The air doesn't care how much of that distance is fuselage. We are not talking about the li...Jump to post
Wingspan 13% higher. No, it is not! 778 has an effective wingspan that is longer by around 5.7%. When calculating drag, we should consider the effective wingspan, not the physical wing span. Effective wingspan would be the wingspan without the wingtip device + the equivalent span of the wingtip dev...Jump to post
We've also heard occasionally that the A350-1000's chord extension without a span extension results in a not-quite-optimal aspect ratio. Actually, the A35K is better off with the increased chord length. Its range and performance increased with it. (Otherwise Airbus would not have gone with it, don’...Jump to post
It is unusual to see a new version of an aircraft with significantly less thrust at the same MGTOW True. While the 77X would definitely have a higher L/D ratio than the 77W, it will have a lower Thrust to weight ratio by about 10%. In that case, I wonder how its climb performance will turn out to b...Jump to post
zakuivcustom wrote:Umm...it's not just the planes, though. The A320/A220 maybe assembled in US, but in the case of tariffs, those components for the planes will likely fall under the tariff also.
Well, if those tariffs are imposed, then only A350 and A330neo would be impacted, as A320 and A220 are assembled in the States. In other words, only DL would pay those tariffs. UA would receive their A359s after Trump leaves office, so no worries for them!Jump to post
Condolences to the families of all involved: Here is my understanding of what happened. 1) The pilots correctly cut out electric trim controls; at which point they could manually fly the aircraft in a somewhat stable configuration, and apparently were doing so with difficulties. 2) Key difficulty i...Jump to post
I was thinking, what if different regulators decided to ban the MAX after the LION AIR incident. Many would've said that would be pushing it too far. But had they done that, the 150 lives of the ET flight would've been saved. This is an example of when an indecision would be worse than a wrong decis...Jump to post
If you take into account the amount of aircraft produced and hours flown. I think it’s the 777 by a long shot. Especially since the 777’s fatal accidents were all basically external factors. One got shot down(MH17), another one has basically vanished (MH370) and the last one the pilot couldn’t do a...Jump to post
The 777 has also been the safest aircraft ever made, I think. Such a claim is very hard to make. We can say that it is one of the safest planes ever made, but singling it out in such a way is very hard to prove. While 777 does have a great safety record, there are other types that never had a fatal...Jump to post
or you can listen to their ceos? https://www.bloomberg.com/news/articles/2018-02-13/delta-ceo-eyes-launch-customer-status-as-boeing-mulls-797-jet If there is only one airline that would order the 797, it would be DL. It is essentially a modern 767, and DL made that model work pretty well as it was ...Jump to post