Search found 411 matches

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by Eyad89
Mon Oct 22, 2018 9:48 pm
Forum: Civil Aviation
Topic: Lufthansa looking at buying 20 A350 or 787 according to Bloomberg
Replies: 101
Views: 12036

Re: Lufthansa looking at buying 20 A350 or 787 according to Bloomberg

marcelh wrote:
ikolkyo wrote:
On TATL I would not be surprise if the 787 is a better fit.

Delta must be insane to use the A350 TATL


And SQ flies its A359 on 6-hour routes even though they've got a bunch of 78X, plus DL flies its A359 on the AMS route only. It's more of an exception rather than the rule.

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by Eyad89
Sun Oct 21, 2018 7:42 pm
Forum: Civil Aviation
Topic: Folding 777 Wingtips
Replies: 125
Views: 23421

Re: Folding 777 Wingtips

It seems some folks are confusing a folding wingtip with a folding wing. Let’s clarify, the wing of 77X by itself won’t fold, it is just the raked wingtip that folds. And usually planes can fly just fine without a wingtip, as it is just an addon, the plane won’t lose lift in a way that would affect ...

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by Eyad89
Fri Oct 12, 2018 4:49 pm
Forum: Civil Aviation
Topic: Bloomberg: A380-Saving Emirates Deal Is Stalled Due to Engine Impasse
Replies: 332
Views: 49740

Re: Bloomberg: A380-Saving Emirates Deal Is Stalled Due to Engine Impasse

I calculate 14% more profit per flight with a 779. I have seen you say this in a few threads, but I still don't see how you reached that conclusion. There's no doubt that 779 will have the higher profit per seat, but it wouldn't make sense that it would generate more profit per flight. profit per f...

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by Eyad89
Tue Oct 09, 2018 4:01 pm
Forum: Civil Aviation
Topic: Airbus has a new CEO
Replies: 11
Views: 2340

Re: Airbus has a new CEO

Are the executives at Airbus all French now?

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by Eyad89
Sun Oct 07, 2018 1:43 pm
Forum: Civil Aviation
Topic: KLM outlines first routes and configuration for 787-10
Replies: 10
Views: 5215

Re: KLM outlines first routes and configuration for 787-10

Newbiepilot wrote:
38 business class seats will be the most business seats on any KLM plane. I assume that means the plane will go to higher yielding destinations


I guess it means it would be a 2-2-2 configuration as well.

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by Eyad89
Fri Oct 05, 2018 2:35 pm
Forum: Non-Aviation
Topic: Trump engaged in outright fraud, New York Times
Replies: 113
Views: 3221

Re: trump engaged in outright fraud, New York Times

Aside of the New York state tax authorities that is i guess... Even if there was something fishy going on, the statute of limitations expired years ago. Trump hsa nothing to fear, except public backlash. And I doubt that scares him much by now. Yeah, why should anyone be concerned about a career fr...

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by Eyad89
Fri Oct 05, 2018 11:17 am
Forum: Non-Aviation
Topic: Trump engaged in outright fraud, New York Times
Replies: 113
Views: 3221

Re: trump engaged in outright fraud, New York Times

Are you honestly too limited to connect the dots from tax cuts to job growth to wage growth? Let's speak in numbers, shall we? take a look at the average job growth figures per month for the past few years: https://chartable-images.edapps.nile.works/chartable/5b9aeb5c899fb90552ebabaf/2300.jpg?v=153...

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by Eyad89
Thu Oct 04, 2018 12:07 pm
Forum: Non-Aviation
Topic: Trump engaged in outright fraud, New York Times
Replies: 113
Views: 3221

Re: trump engaged in outright fraud, New York Times

Are you honestly too limited to connect the dots from tax cuts to job growth to wage growth? Let's speak in numbers, shall we? take a look at the average job growth figures per month for the past few years: https://chartable-images.edapps.nile.works/chartable/5b9aeb5c899fb90552ebabaf/2300.jpg?v=153...

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by Eyad89
Wed Oct 03, 2018 8:58 am
Forum: Non-Aviation
Topic: Trump engaged in outright fraud, New York Times
Replies: 113
Views: 3221

Re: trump engaged in outright fraud, New York Times

With record unemployment for minorities, over 100 all time highs for the stock market, unemployment, growth, and stocks numbers all build on the success of his predecessors. You can't give Trump all the credit for that, and most likely whoever comes after Trump would build on where Trump left off a...

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by Eyad89
Tue Oct 02, 2018 4:33 pm
Forum: Non-Aviation
Topic: Grassley Scraps Kavanuagh Hearing
Replies: 1339
Views: 25405

Re: Grassley Scraps Kavanuagh Hearing

If Trump nominated Merrick Garland would the Democrats demand to see every opinion, every letter he has ever written? Would they investigate his yearbooks? Genuine question. Trump may have to nominate someone else and it'll need to be a fast confirmation just in case the senate is lost. It may be a...

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by Eyad89
Tue Oct 02, 2018 12:12 pm
Forum: Non-Aviation
Topic: Grassley Scraps Kavanuagh Hearing
Replies: 1339
Views: 25405

Re: Grassley Scraps Kavanuagh Hearing

Just a thought, Ford passed the lie detector test, while this SCOTUS nominee wouldn't even take it. Interesting.

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by Eyad89
Sat Sep 29, 2018 10:53 pm
Forum: Non-Aviation
Topic: Grassley Scraps Kavanuagh Hearing
Replies: 1339
Views: 25405

Re: Grassley Scraps Kavanuagh Hearing

Honesty is the one trait any judge must have, let alone a supreme court justice! A dishonest judge is like a singer that has a terrible voice. We know for a fact that he lied about his drinking habit while testifying under oath, that alone should disqualify him. We still don’t know the truth about t...

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by Eyad89
Thu Sep 20, 2018 12:33 pm
Forum: Civil Aviation
Topic: Boeing 797 Discussion Thread - 2018
Replies: 3350
Views: 390849

Re: Boeing 797 Discussion Thread - 2018

NMA will have a much lower OEW (the 767-300ER is twice that of the 737), a much newer wing with significantly better aerodynamics and engines multiple generations newer and more efficient so it should prove a more effective platform than the 767 family. Even if the 797 has a fuel burn per seat that...

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by Eyad89
Sun Sep 16, 2018 8:44 pm
Forum: Technical/Operations
Topic: Post for 787 Pilots. What is the Typical Real World Fuel Burn for a 789?
Replies: 18
Views: 1625

Re: Post for 787 Pilots. What is the Typical Real World Fuel Burn for a 789?

The data provided exactly includes hours flown across multiple sectors. Read more carefully. That is why it is an average. Basic math would tell you with a decent enough sample size an average is statistically significant. Again...this is basic math. Sorry if you don't like the numbers. No, you are...

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by Eyad89
Sun Sep 16, 2018 1:16 pm
Forum: Technical/Operations
Topic: Post for 787 Pilots. What is the Typical Real World Fuel Burn for a 789?
Replies: 18
Views: 1625

Re: Post for 787 Pilots. What is the Typical Real World Fuel Burn for a 789?

The data provided exactly includes hours flown across multiple sectors. Read more carefully. That is why it is an average. Basic math would tell you with a decent enough sample size an average is statistically significant. Again...this is basic math. Sorry if you don't like the numbers. No, you are...

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by Eyad89
Sat Sep 15, 2018 1:44 pm
Forum: Civil Aviation
Topic: Airbus A350 Production/Delivery Thread 2018
Replies: 1461
Views: 517361

Re: Airbus A350 Production/Delivery Thread 2018

IB got the first version of the modified winglet for the A359, does that mean all other deliveries will get that automatically as well?

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by Eyad89
Fri Sep 14, 2018 2:59 pm
Forum: Civil Aviation
Topic: Diversion of IB A350 causes RR shares to drop
Replies: 90
Views: 19496

Re: Diversion of IB A350 causes RR shares to drop

[ The XWB is newer, has much less in service time and the problems are durability based so I remain unconvinced that they know it isn’t a problem there too. The timelines don’t work out for me. The first reports of corrosion issues in the Trent’s were in 2016. The EASA and FAA restrictions occurred...

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by Eyad89
Fri Sep 14, 2018 11:45 am
Forum: Civil Aviation
Topic: Boeing Rolls out Static Test 777-9X
Replies: 125
Views: 21721

Re: Boeing Rolls out Static Test 777-9X

The folding wingtip is actually a relatively small part of the wing. People worrying about problems with it likely didn’t realize how only a tiny part of the wing folds. It's actually THE tip device (i.e. raked wingtip) that folds, it's not a part of the wing itself. It's not like in naval aviation...

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by Eyad89
Wed Sep 12, 2018 2:10 pm
Forum: Civil Aviation
Topic: Boeing 777X Production Thread 2018
Replies: 219
Views: 53501

Re: Boeing 777X Production Thread 2018

If I understood correctly winglet are more efficient at cruise and for such an LR bird I'd think you don't want a "flat" wing once folding tips are deployed, right ? Or the tip device is just missing as not needed for fatigue testing ? The raked wingtip (while flat) adds 85% of the wingti...

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by Eyad89
Sat Sep 08, 2018 1:53 pm
Forum: Civil Aviation
Topic: EK looks to grow US network; considers smaller 787/777 versions
Replies: 165
Views: 26893

Re: EK looks to grow US network; considers smaller 787/777 versions

More specific, the engine orders of the A380 and 787 will be tied together. They haven't firmed the 777X in terms of moving from a conditional order to unconditional, because engine negotiations for all three models are now intertwined (they didn't start that way). Plus 777X performance and penalti...

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by Eyad89
Sat Sep 08, 2018 1:25 pm
Forum: Civil Aviation
Topic: EK looks to grow US network; considers smaller 787/777 versions
Replies: 165
Views: 26893

Re: EK looks to grow US network; considers smaller 787/777 versions

Back in the days when EK was evaluatin the case of 78X vs A359, I thought A359 might win it just because of its flexibility of doing such thin and long-distance routes, somethig the 78X can’t do. Now it makes sense, EK might split its 787 order into 789 and 78X. Problem solved. I wonder why EK didn’...

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by Eyad89
Sat Sep 08, 2018 1:11 pm
Forum: Civil Aviation
Topic: Arabian aviation thread - 2018
Replies: 220
Views: 18187

Re: Arabian aviation thread - 2018

Any update on the SV supposed 779 order?

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by Eyad89
Sat Sep 08, 2018 1:09 pm
Forum: Civil Aviation
Topic: Airbus A350 Production/Delivery Thread 2018
Replies: 1461
Views: 517361

Re: Airbus A350 Production/Delivery Thread 2018

A350 might be the first wide-body that looks better with the smaller variant IMO. Other smaller variants of different wide-bodies look kinda overwinged.

Perhaps that’s because A359 wasn’t initially supposed to be the baby of the family.

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by Eyad89
Sat Sep 08, 2018 7:08 am
Forum: Civil Aviation
Topic: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019
Replies: 264
Views: 37466

Re: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019

zero reason for them to do that. The A359ULR is limited by the 4wheel trucks on each of its main gear, which is the reason it doesn't have a higher weight than what's now offered on the standard A359, and thus has to trade payload for fuel storage. The A35K's 6truck bogey allows for far higher weig...

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by Eyad89
Thu Sep 06, 2018 8:26 am
Forum: Civil Aviation
Topic: Singapore Airlines reveals configuration on 2 class A359, ADL to be first route
Replies: 47
Views: 8130

Re: Singapore Airlines reveals configuration on 2 class A359, ADL to be first route

Is this first delivery of an aircraft without Premium economy since they started? What is the strategy on what routes do and don’t have premium economy The same strategy as the 787-10, used on routes up to 8 hours, so both frames will replace current regional jets being the 772, 773A and A333 Why d...

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by Eyad89
Thu Sep 06, 2018 6:51 am
Forum: Civil Aviation
Topic: The Muddle of the Market aircraft (No, this isn’t a typo)
Replies: 327
Views: 29751

Re: The Muddle of the Market aircraft (No, this isn’t a typo)

What made the 777 the legend it is today wasn't some estimate for the size of the market, or what the competition was doing, but that Boeing exceeded expectations and delivered the greatest plane ever built. This happened partly because of Boeing engineers and managers, who designed an aircraft of ...

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by Eyad89
Tue Sep 04, 2018 5:41 pm
Forum: Civil Aviation
Topic: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019
Replies: 264
Views: 37466

Re: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019

"Qantas promises 20-hour direct flights from London to Sydney by 2022" https://www.yahoo.com/lifestyle/qantas-promises-20-hour-direct-143704714.html We now timeframe/year for the from Qantas... Coincidence? That is the year the 778 will debut.... We don’t know what year A350-1000ULR will ...

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by Eyad89
Thu Aug 30, 2018 12:46 pm
Forum: Civil Aviation
Topic: Rumour: British Airways - Big Aircraft Order soon
Replies: 219
Views: 45800

Re: Rumour: British Airways - Big Aircraft Order soon

We know for a fact that BA has considered the 779 at least once before, but they ordered the A35K anyway. What makes them reconsider it now? Placing orders depends directly on the strategies of airlines, and a strategy cannot change in such short time, considering how recent the A35K order is. I can...

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by Eyad89
Wed Aug 29, 2018 7:49 pm
Forum: Civil Aviation
Topic: Rumour: British Airways - Big Aircraft Order soon
Replies: 219
Views: 45800

Re: Rumour: British Airways - Big Aircraft Order soon

bmacleod wrote:
According to a news release back in May; BA was looking at a big 777X order.....

https://aviationnews.online/2018/05/05/british-airways-set-to-order-up-to-30-777-9-10/


It mentions a potential order of the 777-10?

That eacalated quickly !

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by Eyad89
Wed Aug 29, 2018 9:29 am
Forum: Civil Aviation
Topic: Airbus A350 Production/Delivery Thread 2018
Replies: 1461
Views: 517361

Re: Airbus A350 Production/Delivery Thread 2018

https://www.ainonline.com/aviation-news ... eries-2021

Along with the rumored EY's deferments/cancellations, Airbus has some early slots to fill.
-->

And KLM delays its first A359 to 2021.

https://www.ainonline.com/aviation-news ... eries-2021

Along with the rumored EY's deferments/cancellations, Airbus has some early slots to fill.

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by Eyad89
Wed Aug 29, 2018 9:07 am
Forum: Civil Aviation
Topic: Airbus A350 Production/Delivery Thread 2018
Replies: 1461
Views: 517361

Re: Airbus A350 Production/Delivery Thread 2018

And so the delivery target for this year is 105, and since the program is expected to start generating a positive cash flow sometime this year, 120 frames for 2019 all generating a positive cash flow should be good news for Airbus.

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by Eyad89
Fri Aug 24, 2018 9:44 pm
Forum: Civil Aviation
Topic: Will EK ever firm its 787 order?
Replies: 26
Views: 5132

Re: Will EK ever firm its 787 order?

We know that EK had its doubts if 78X could take off with full payload in the summer, could we say that they are waiting for more performance data? Just a guess.

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by Eyad89
Fri Aug 24, 2018 8:59 pm
Forum: Civil Aviation
Topic: Which Frame Will Be More Efficient....The A35J or the 779?
Replies: 299
Views: 29904

Re: Which Frame Will Be More Efficient....The A35J or the 779?

We can’t conclude based on a single flight on a certain route. On the 16th of August, SQ’s A359 climbed straight away to 34,000 ft on the SIN-SFO route, and it spent roughly the last 40% cruising at 41,000 ft. The 359 will go to FL350 departing at MTOW, I haven’t flown the 35K anywhere near max wei...

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by Eyad89
Fri Aug 24, 2018 1:20 am
Forum: Civil Aviation
Topic: Rumour: No A350’s for Etihad
Replies: 65
Views: 14194

Re: Rumour: No A350’s for Etihad

As the EY’s A350 is supposed to start getting assembled soon, we will know if it is a cancellation or a deferment.

If it is a cancellation, I am curious how they will settle the penalties for the 60+ frames.

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by Eyad89
Thu Aug 23, 2018 9:53 pm
Forum: Civil Aviation
Topic: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019
Replies: 264
Views: 37466

Re: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2

qf002 wrote:

- whether the A35K can make the trip without auxiliary tanks (which add weight and take up cargo space on flights where they aren’t required)


I don’t think that’s possible, unless the payload is significantly reduced.

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by Eyad89
Thu Aug 23, 2018 1:21 pm
Forum: Civil Aviation
Topic: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019
Replies: 264
Views: 37466

Re: Airbus and Boeing meet Qantas Project Sunrise challenge, RFP to be completed by end of 2019

If the Perth load factors are truely thet high, then I think it is almost certainly going to be a 778. Their choice of 2022 as a lunch year hints at 778 as well, becaus that’s when 778 starts entering the market. But I got confuses, half the article mentions how QF is targeting a tweaked version of ...

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by Eyad89
Thu Aug 23, 2018 5:30 am
Forum: Civil Aviation
Topic: Which Frame Will Be More Efficient....The A35J or the 779?
Replies: 299
Views: 29904

Re: Which Frame Will Be More Efficient....The A35J or the 779?

Some examples. The 787-8 can go straight to 36,000ft at MTOW. The 787-9 can only go up to 32,000ft, same wing, heavier MTOW. The 777W can only go to 30,000ft it is underwinged. Singapores A350-900 to north americas initial cruise is only 31,000ft. After 4 hours it climbs to 34,000ft and gets to 39,...

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by Eyad89
Wed Aug 22, 2018 9:49 pm
Forum: Civil Aviation
Topic: Which Frame Will Be More Efficient....The A35J or the 779?
Replies: 299
Views: 29904

Re: Which Frame Will Be More Efficient....The A35J or the 779?

We know that the target sfc for the GE9X is about 10% better than that of the GE90-115B. Does anyone know what the expected overall L/D of the 777-9 compared to 777-300ER? My wild estimate is between 5% to 8%, but the range is too large and it's only based on the aspect ratio deduced from the planf...

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by Eyad89
Tue Aug 21, 2018 10:37 pm
Forum: Civil Aviation
Topic: Which Frame Will Be More Efficient....The A35J or the 779?
Replies: 299
Views: 29904

Re: Which Frame Will Be More Efficient....The A35J or the 779?

The induced drag at OEW is moot since there is no fuel to fly anywhere. That's just as well since there's zero payload at OEW. Absolutely, but the point I was trying to make is how 12 tons difference in OEW should not be taken lightly .. so those figures that are thrown around here should be accurate

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by Eyad89
Tue Aug 21, 2018 5:57 pm
Forum: Civil Aviation
Topic: Which Frame Will Be More Efficient....The A35J or the 779?
Replies: 299
Views: 29904

Re: Which Frame Will Be More Efficient....The A35J or the 779?

The latest I've seen the OEW of the 777-9 was expected to be 190T at launch and has decreased a bit, now 188T. I'm very interested in the 176-177T background / sources. The difference between 176T and 188T is significant. If altitude, speed, and angle of attack were held constant, than induced drag...

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by Eyad89
Sun Aug 19, 2018 10:55 pm
Forum: Technical/Operations
Topic: Aspect ratio vs span loading in induced drag calculations
Replies: 12
Views: 887

Re: Aspect ratio vs span loading in induced drag calculations

When you do consider air density, the absolute value for Di depends on AR In the way I see it from the equation, allow me to make a small modification. Replace air density in that statement with Cl, and then it all makes sense to me. Cl depends on air density( so you are absolutely correct here), w...

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by Eyad89
Sun Aug 19, 2018 10:48 pm
Forum: Technical/Operations
Topic: Aspect ratio vs span loading in induced drag calculations
Replies: 12
Views: 887

Re: Aspect ratio vs span loading in induced drag calculations

I think you are getting mostly there, but in Step #1 of your post, how are you arriving at the conclusion that AR is cancelled out in the formula for Cdi? I would need to write it out, but algebraically, I don't believe this is correct. Even when substituting the formula for C_l in your Cdi equatio...

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by Eyad89
Sat Aug 18, 2018 7:31 pm
Forum: Technical/Operations
Topic: Aspect ratio vs span loading in induced drag calculations
Replies: 12
Views: 887

Re: Aspect ratio vs span loading in induced drag calculations

I've been doing some reading, and I think I have started to understand the difference, allow me to add a bit to your post .. IMO a lot of confusion on AR vs. Span for Di calculations comes from not specifying the level at which the calculation is made. AR determines the Di coefficient but span deter...

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by Eyad89
Fri Aug 17, 2018 5:51 pm
Forum: Civil Aviation
Topic: Which Frame Will Be More Efficient....The A35J or the 779?
Replies: 299
Views: 29904

Re: Which Frame Will Be More Efficient....The A35J or the 779?

That's a superficial way to look at it. Yes wetted area matters but air density is also linear with skin friction. 777-9 will cruise higher due to lower wing loading. Actually, A35K is the one with the lower wing loading. 779 and A35K have almost the same wing area ( 466 vs 464 m^2), but the weight...

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by Eyad89
Sun Aug 12, 2018 2:48 pm
Forum: Civil Aviation
Topic: Turkish Aviation August 2018
Replies: 171
Views: 15826

Re: Turkish Aviation August 2018

According to routesonline, TK will configure their 789's with 300 seats, 30C and 270Y https://twitter.com/Airlineroute/status/1028636139090051072 In that case, C will probably be 5 rows of 2-2-2... just like the A330s (layout-wise, not number of rows). Does that make TK the first airline that would...

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by Eyad89
Sat Aug 11, 2018 3:49 pm
Forum: Technical/Operations
Topic: Aspect ratio vs span loading in induced drag calculations
Replies: 12
Views: 887

Re: Aspect ratio vs span loading in induced drag calculations

Thanks guys for the great input. Anyway, AR, is still a fundamentally very important measure of induced drag because it is a mathematical representation of how close a 3d wing comes to being an airfoil l. Remember, as the span approaches infinity you essentially have a 2d airfoil and thus no induced...

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by Eyad89
Sat Aug 11, 2018 11:00 am
Forum: Technical/Operations
Topic: Aspect ratio vs span loading in induced drag calculations
Replies: 12
Views: 887

Aspect ratio vs span loading in induced drag calculations

Whenever a discussion of lift-induced drag comes up in those forums, aspect ratio is likely discussed as the deciding factor in that regard. At first, this sounds about right from a mathematical point of view, simply because a common representation of the induced drag formula has the aspect ratio in...

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by Eyad89
Sun Aug 05, 2018 7:13 pm
Forum: Civil Aviation
Topic: 787 In Service Thread 2018
Replies: 105
Views: 16041

Re: 787 In Service Thread 2018

Qantas marks 4 months serving PER-LHR Some fast facts 244 flights 57,000 passengers 170,000 meals 26,000 Tim Tams 3,539,512 km's travelled https://twitter.com/Qantas/status/1025184898485760000 Well the passenger numbers I’m skeptical. That makes an average LF of 234/236 or 99% which seems very high...

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by Eyad89
Mon Jul 30, 2018 9:44 pm
Forum: Civil Aviation
Topic: Reduction of 787 deferred production cost slows.
Replies: 288
Views: 20830

Re: Reduction of 787 deferred production cost slows.

Let’s take it from this accounting professor from Central Oklahoma. “Had Boeing not deferred construction costs on planes already built, it would have had a deficit in net worth of $10.9 billion, net of estimated income tax benefits of $8.1 billion.” This was almost two years ago. He clearly stated ...

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