Search found 1449 matches

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by RJMAZ
Sat Jul 20, 2019 3:11 am
Forum: Civil Aviation
Topic: United to expand premium 767s to Switzerland
Replies: 51
Views: 8289

Re: United to expand premium 767s to Switzerland

jfk777 wrote:
Why is United investing in these old 767 and not in new 787-9 for these flights. United's 767 plans should include their exit not new Polaris seats for a high J version.

Because their huge order of 797's will not start to arrive until 2025. :bouncy:

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by RJMAZ
Fri Jul 19, 2019 11:40 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

The 767 seems very much right sized for the job. -> Boeing says so! https://i.pinimg.com/originals/7b/00/45/7b00456ce19c9383f5b7fc2dbcb6a8af.jpg The 767-200ER is outside of your MOM circle and the 767-300ER just scrapes in. With new engines the dots will shift to the right. Both will now be well ou...

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by RJMAZ
Fri Jul 19, 2019 7:25 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 849
Views: 122046

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Boeing is still pumping out heaps of 737MAX's. How many do they have parked at the final assembly line?

Surely they will run out of space soon?

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by RJMAZ
Fri Jul 19, 2019 4:36 am
Forum: Technical/Operations
Topic: Where do old/discontinued J class seat products end up?
Replies: 6
Views: 907

Re: Where do old/discontinued J class seat products end up?

I'm surprised I have never seen old airline seats for sale. Maybe the seats are too contaminated with bleed air? I purchased cinema seats from the a cinema that had a high end premium cinema that also had food delivered. Very nice seats for my home cinema with two rows of 4. I purchased off a guy wh...

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by RJMAZ
Fri Jul 19, 2019 3:15 am
Forum: Civil Aviation
Topic: A380 NEO Proposal
Replies: 34
Views: 5412

Re: A380 NEO Proposal

Why was the A380 NEO never developed Why can't Airbus fanboys realise how bad the original A380 design was? It was extremely inefficient for its size. Had it been designed properly the CASM would have been 20+% better. The A380 total cabin area is effectively a 787-10 on the lower deck and a 787-9 ...

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by RJMAZ
Thu Jul 18, 2019 11:36 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

767NEO? Surely joking keesje? New engines would increase range by around 15%. The 767 has a range of 6590nm and 5980nm.. That would go up to to 7575nm and 6875nm. Just a bit higher than the 4500nm and 5200nm range figures that Boeing has mentioned. The 767 needs the fuselage interior widened like th...

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by RJMAZ
Thu Jul 18, 2019 3:24 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

787 engines are already raised up as much as they can be, if they go higher they will interfere with the wing air flow. Isn't that the MAX problem? No https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcRabYjkyEEGhiNbKAlrOPDJveTjjxlX7mvSi8mjgE5szgnoIeIW The exhaust outlet of the 787 is well bel...

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by RJMAZ
Thu Jul 18, 2019 2:03 am
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

It looks like the 787 is about midsection as well in other images. Scroll down to the second image in this article. https://thepointsguy.com/news/how-airlines-are-affected-by-the-rolls-royce-engine-trouble-on-the-boeing-787/ Exactly, both the A350 and 787 can fit new higher bypass engines. Vladex i...

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by RJMAZ
Wed Jul 17, 2019 11:53 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

Ultrafan concept is 355 cm which someone said in another thread correct me if I am wrong, would leave 787 with 0 clearance and A350 about 19 cm. Incorrect again. The A330NEO fan is 33cm larger diameter yet ground clearance was reduced by less than 10cm. The engine was simply mounted higher. The A32...

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by RJMAZ
Wed Jul 17, 2019 3:57 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

787 can't get reengined and A350 has a limited ground clearance for reengine. My bet is another double decker quad jet in 10 years when everyone realizes that twin jets have reached a limit. Incorrect. Check the ACAP both the 787 and A350 can comfortably fit engines 10% bigger in diameter. Ground c...

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by RJMAZ
Wed Jul 17, 2019 8:04 am
Forum: Civil Aviation
Topic: Would A321XLR open the door for non-stops between US west coast and CTS?
Replies: 51
Views: 7535

Re: Would A321XLR open the door for non-stops between US west coast and CTS?

How much range would an A321XLR have with 100 passengers and the weight of 32 flat seats and some J seats? That would put the range comfortably above 5000nm brochure range. It could fly Los Angeles to Japan 4700nm fairly easily with 3 class widebody sized seating.. If you're only looking at headcou...

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by RJMAZ
Wed Jul 17, 2019 4:06 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

the B767 had 50-52K Thrust engines from PWA . GE, and Rolls. I would seriously doubt that Boeing would get much smaller less powerful engines especially for Engine out and ETOPS Performance as I suspect that out of the BOX with the airplane to be certified with ETOPS 180-240. As I pointed out a cou...

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by RJMAZ
Tue Jul 16, 2019 2:13 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

I don;t know if it's 40 or 45 but I doubt we see 50K engines until the 797-8 comes along. I think Boeing might have learned quite a bit with the 788/789 which have two different MTOW's and gears and Wing strengths/etc.. The 781 seems to have added some strength in the wing as well and could use a s...

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by RJMAZ
Tue Jul 16, 2019 1:56 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

It does not change the fact, when the 797 is able to take on a large part of the 787-8/A330 replacement market it needs a size and range that makes the shorter version uncompetitive to the A321XLR. You aren't making much sense. That is like saying the A350-900 wont be competitive with the 787-10. Y...

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by RJMAZ
Tue Jul 16, 2019 11:02 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

Depending on the span it will not need 50k either, 45k would be more than adequate. you'd only need a 50k+ engine if you were putting a 757 sized wing on the thing (I dont think this is too far from the what could be done). We have multiple reports of 52,000lb thrust engines. That definitely points...

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by RJMAZ
Tue Jul 16, 2019 9:42 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

And that makes the business case problematic. Does Boeing really need another plane to kill the A330NEO for good or should the 787 not do exactly that? And if you look at the limited sales of the A330NEO would the large MoM not only eat into 787 sales? The business case isn't problematic though. It...

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by RJMAZ
Tue Jul 16, 2019 6:34 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

That sounds about right - maybe slightly slimmer Aisles - but about 160-165" H and about 188-190"W External - 25% more cross section than A321. 25% more cross section for 17% more seats, not good enough. They need to get it down below 160" internally, the more the better. Being able ...

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by RJMAZ
Tue Jul 16, 2019 3:40 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

That's where I think the 797-8 will be (140T) and it will need that thrust to compensate for a relatively small wing. I think the wing will be sized to fit into normal 737/A320 gates while folded and optimized around the 797-7, maybe 43-44m in width. It will effectively be a little small for 797-8 ...

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by RJMAZ
Tue Jul 16, 2019 2:47 am
Forum: Civil Aviation
Topic: Would A321XLR open the door for non-stops between US west coast and CTS?
Replies: 51
Views: 7535

Re: Would A321XLR open the door for non-stops between US west coast and CTS?

chornedsnorkack wrote:
How much range would an A321XLR have with 100 passengers and the weight of 32 flat seats and some J seats?

That would put the range comfortably above 5000nm brochure range.

It could fly Los Angeles to Japan 4700nm fairly easily with 3 class widebody sized seating..

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by RJMAZ
Tue Jul 16, 2019 12:43 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

But I believe the MTOW will be a lot lower than people are assuming the more I think about it. That is because you have the crazy idea that the 797 will be really small and that the 737 replacement will use the same 7ab cross section. “Even if it sneaks a little bit north of 50,000 thrust, we would...

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by RJMAZ
Mon Jul 15, 2019 11:08 am
Forum: Civil Aviation
Topic: Boeing 777X Testing Thread - 2019
Replies: 498
Views: 137630

Re: Boeing 777X Testing Thread - 2019

[*] Enough thrust headroom for a 777-10 The 777-10 would only need more thrust if it had a higher MTOW, which I don’t believe the landing gear can accommodate. I believe it is at the absolute limit now. Increasing it will require more tires, and that will not be easy. Incorrect. The 787-10 has more ...

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by RJMAZ
Mon Jul 15, 2019 9:55 am
Forum: Civil Aviation
Topic: Boeing 777X Testing Thread - 2019
Replies: 498
Views: 137630

Re: Boeing 777X Testing Thread - 2019

Enough thrust headroom for a 777-10

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by RJMAZ
Sun Jul 14, 2019 4:12 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

So in my modest and amateur opinion they cannot afford the 7ab (too inefficient) neither the single aisle, (too small for the task) and they should build a cleansheet A310 (by size and distribution) for that market. In my mind, the section would be an A310's slimmed down one, or as slightly wider 7...

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by RJMAZ
Sun Jul 14, 2019 3:59 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

Skinny planes are heavy as proven by the 757-300 and A340-600 and 767-400. Per metre of extra fuselage they gained more weight due to a smaller diameter long tube being easy to bend conpared to a shorter wider tube. A 767-400 length fuselage that is 18% skinnier in height will be ridiculously heavy...

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by RJMAZ
Sun Jul 14, 2019 1:23 pm
Forum: Civil Aviation
Topic: Would A321XLR open the door for non-stops between US west coast and CTS?
Replies: 51
Views: 7535

Re: Would A321XLR open the door for non-stops between US west coast and CTS?

Indeed it seems this aircraft's range unlocks those routes, but this is actually not true. This range would be in still air, but the air isn't still. Far from it. In the north Pacific you'd be flying against some of the strongest winds on the planet, which would greatly reduce the aircraft range. I...

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by RJMAZ
Sun Jul 14, 2019 11:41 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

I should photoshop that picture to demostrate what the "reduced height" cross section would look like. It is less important what it will look like but for what it will weigh like... Fred Skinny planes are heavy as proven by the 757-300 and A340-600 and 767-400. Per metre of extra fuselage...

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by RJMAZ
Sun Jul 14, 2019 10:21 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

I still think tight 8-across is too big for the goals of the programme - it replicates the 767 that no-one has bought in pax form for heaven only knows how long, You actually just proved my argument. 8ab on the 797 replicates the A330 that killed the 7ab 767. The 797-6 and 797-7 closely matches the...

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by RJMAZ
Sun Jul 14, 2019 7:44 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

There's something badly wrong though if a plane that's 40% heavier than the XLR, and purpose designed only carries 20% more passengers less distance. The -6's range has to be a minimum of 5 000Nm in my book . If it doesn't outrange the XLR then it does not have a bright future. Previous articles ha...

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by RJMAZ
Sun Jul 14, 2019 6:35 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

I don’t buy 8ab. It would have a cabin the same length as an A320. The extra long range version you got over exited about would be like a 767 as short as a 73g... So pretty much an A310? Nothing wrong with that. The A310 has a cabin length a metre shorter than a A321 and a 737-10. The A310 is a com...

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by RJMAZ
Sun Jul 14, 2019 5:52 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

If a 34 row A321 seats 204, plus another row, is 210, plus 7x is 245, which is 20% more seating. So if that is the Bigger NMA, I can see why that one would be launched first. In which case, I doubt there would be a shrink, they would just add payload and engine capability and make a NMA-7ER in a fe...

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by RJMAZ
Sun Jul 14, 2019 5:27 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

RJMAZ - Great post - but the 797-7 will not be within 10% of the seating of the 788. I remember a quote from a Boeing exec a few years The larger 797 will most definitely seat 300 passengers in a single class cabin. You can not really argue with the numbers. 267 seats in Boeing two class seating eq...

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by RJMAZ
Sun Jul 14, 2019 1:56 am
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1051
Views: 145354

Re: Boeing 797 Thread - 2019

The smallest 797 model is approx 20% bigger than the A321 and the largest 797 is approx 40% bigger. Just clearing this up again. So what am I missing? In the article linked they quote:- The Boeing 797 numbers are with a two class cabin you are comparing them to a single class cabin on the A321. Boei...

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by RJMAZ
Sat Jul 13, 2019 2:58 am
Forum: Travel, Polls & Preferences
Topic: What will be the next revolution in air travel?
Replies: 13
Views: 1263

Re: What will be the next revolution in air travel?

Small electric taxi service drones for short jumps. About 20 years away. Agreed. Electric aircraft is the future. I think the reduced noise will see electric begin to operate from smaller airports. This is where these electric taxi aircraft will operate. I expect them to be single pilot operating. ...

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by RJMAZ
Fri Jul 12, 2019 10:06 am
Forum: Technical/Operations
Topic: Did/Does the 779X need a new wing? and does it need to be so big?
Replies: 21
Views: 3126

Re: Did/Does the 779X need a new wing? and does it need to be so big?

Excellent discussion. With any aircraft size a manufacturer can choose between the following design compromise: Small wing = lower empty weight Medium wing = medium empty weight Larger wing = higher empty weight The bigger the wing the longer the average flight needs to be for it to be the best desi...

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by RJMAZ
Fri Jul 12, 2019 8:04 am
Forum: Civil Aviation
Topic: Why doesnt Air New Zealand fly to New York?
Replies: 42
Views: 5751

Re: Why doesnt Air New Zealand fly to New York?

Air New Zeland simply does not have the aircraft. The 777-300ER did not have the range with brochure range is 300nm short. In regards to the 787-9 firstly it is worth noting while Perth to London on the 787-9 is 150nm longer than Auckland to New york the weather across the Pacific is worse. So if Qa...

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by RJMAZ
Fri Jul 12, 2019 5:58 am
Forum: Technical/Operations
Topic: Why Boeing hasn’t made a ULH Version of the 787
Replies: 26
Views: 3192

Re: Why Boeing hasn’t made a ULH Version of the 787

Designing an aircraft for greater range adds weight and reduces efficiency on shorter flights. Boeing got the 787 perfectly in the sweet spot in my opinion. In the coming decades both the A350 and 787 will fly further than they do now due to engine improvements. The A350 will then have too much rang...

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by RJMAZ
Fri Jul 12, 2019 5:19 am
Forum: Civil Aviation
Topic: Could the 787 be scaled to create the 797?
Replies: 52
Views: 9215

Re: Could the 787 be scaled to create the 797?

That is, in a direct competition, a good 8ab will defeat a good 7ab ... ("apples vs apples") however in similar direct competition, a good 9ab will in turn defeat a good 8ab ... ("apples vs apples") and BA already have the basis of the "good 9ab" ... What think you? I ...

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by RJMAZ
Thu Jul 11, 2019 2:00 am
Forum: Civil Aviation
Topic: Airbus product range 2028
Replies: 62
Views: 7000

Re: Airbus product range 2028

Optimised the wing for shorter ranges than the A350 shorter than 350 - yes but shorter range than 787 means leave market to 787, we can discuss 767neo as direct imagination of this Not at all. The A330NEO as we see it today can not match the 787 at its own game. The A330NEO really has no advantage ...

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by RJMAZ
Wed Jul 10, 2019 3:04 pm
Forum: Civil Aviation
Topic: Airbus product range 2028
Replies: 62
Views: 7000

Re: Airbus product range 2028

What is the range of the traditional 149 seat aircraft, ie., 727, 737-300, A320ceo, and MD88? Imho 2,000nm is more than enough to fill those markets....the densely traveled domestic US markets east of a line from DFW to MSP. Airlines are tired of buying too much airplane just to make manufacturers ...

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by RJMAZ
Wed Jul 10, 2019 2:19 pm
Forum: Civil Aviation
Topic: Airbus product range 2028
Replies: 62
Views: 7000

Re: Airbus product range 2028

You can easily fill a 797 with all the fellow a-netters that declared the A330 dead over the last 15 years. Orders stand at 1700 (+400 A340s) and counting.. Stop making things up. No one declared the A330 dead 15 years ago. 15 years ago in 2004 the A330 order backlog was at its peak with 7 years of...

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by RJMAZ
Wed Jul 10, 2019 10:35 am
Forum: Civil Aviation
Topic: Airbus product range 2028
Replies: 62
Views: 7000

Re: Airbus product range 2028

How about mostly nothing. Few changes and no clean sheet model sounds likely. I agree with this. I think the only aircraft that might see the light of day is the A322. This is the response to the Boeing 797. The A350 might have new engines by 2028 maybe not in service but in development. I doubt th...

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by RJMAZ
Wed Jul 10, 2019 12:03 am
Forum: Civil Aviation
Topic: WSJ: Airbus Poised to Overtake Boeing as Biggest Plane Maker
Replies: 22
Views: 6413

Re: WSJ: Airbus Poised to Overtake Boeing as Biggest Plane Maker

And in the second half of the year the news will say... "Boeing dominates Airbus with world record aircraft deliveries" Boeing is still producing 737MAX aircraft at close to full production rate. When the grounding ends Boeing will need to hire extra pilots to deliver the hundreds of aircr...

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by RJMAZ
Tue Jul 09, 2019 9:45 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

[I have no doubt program delays and cost escalations played a not-insignificant role in the decision to use the 787-8 wing on the 787-9, but If the extra three meters of wingtip span would have returned a 5% reduction in SFC across the entire mission envelope, there is no way Boeing would not have ...

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by RJMAZ
Tue Jul 09, 2019 11:00 am
Forum: Civil Aviation
Topic: Could the 787 be scaled to create the 797?
Replies: 52
Views: 9215

Re: Could the 787 be scaled to create the 797?

And with all this new, there remains very little old parts to use. And those would be easy to do new as well.Load bearing structures do not scale down very well. Agreed. If every part is scaled and optimised then it may as well be a cleansheet design. It wouldn't take much more effort to then chang...

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by RJMAZ
Tue Jul 09, 2019 1:11 am
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

In order to significantly increase the capabilities of the 787, it would need a heavily modified, if not all-new wing, which you’ve previously alluded to. In short, a wing very similar to the 777X’s, only slightly smaller. The 787 will never need a new wing to significantly increase capability. At ...

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by RJMAZ
Mon Jul 08, 2019 5:22 am
Forum: Civil Aviation
Topic: New Airbus and Boeing Market Forecasts
Replies: 29
Views: 3131

Re: New Airbus and Boeing Market Forecasts

The Airbus medium category can probably include a small widebody like the 797. So they seem the same.

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by RJMAZ
Mon Jul 08, 2019 3:33 am
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

Good post RJMAZ - the only Caveat the more I think about it though is my previous thought that the 8 never sees the light of day and that effort/funds are put into stretching the -9 into an -10 as long as possible - call it 85M. Although it would hurt it on range - it's economics up to 6,000nm woul...

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by RJMAZ
Sun Jul 07, 2019 1:47 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

CFRP is already obsolete as a fuselage material? Yes. CFRP was better than traditional 7050 or 7075 aluminium which was the best material in the 1980's and 1990's respectively. Al-Li 2198 is now an improvenent over CFRP. CFRP did not live up to expectations with the 787 in terms of weight for the f...

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by RJMAZ
Sun Jul 07, 2019 12:01 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 587
Views: 98484

Re: Emirates renegotiating 777X order

Coming back to my comment regarding "older" design. 1 777x is using grand fathering from 777 family. Can it use grandfathering method with only 10-20% left from 777 family? Changing the aluminium alloy of a part shouldn't change the grandfathering. If Boeing can prove that a new metal is ...

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