Search found 611 matches

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by tomcat
Tue Nov 24, 2020 4:08 pm
Forum: Civil Aviation
Topic: John Leahy blames the engines for the A380 failure
Replies: 96
Views: 10711

Re: John Leahy blames the engines for the A380 failure

The engine thing is a convenient excuse/rationalization, the kind marketing guys are great at finding. He and Thomas are avoiding looking into the fundamental mistake: they made a plane far bigger than the market could support, and planned to make an even bigger follow-up. As I wrote in the earlier...

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by tomcat
Mon Nov 23, 2020 8:54 pm
Forum: Civil Aviation
Topic: John Leahy blames the engines for the A380 failure
Replies: 96
Views: 10711

Re: John Leahy blames the engines for the A380 failure

John has expressed his thoughts about the A380 problems that started to appear when engine manufacturers were very assuring and over promised stating that the efficiency of the engines where as that of new generation engines. He keeps trotting out this tired old excuse and IMO it still beggars beli...

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by tomcat
Tue Nov 17, 2020 8:24 pm
Forum: Civil Aviation
Topic: Emirates confirms future A380 deliveries
Replies: 82
Views: 12485

Re: Emirates confirms future A380 deliveries

What we need is a A380 Combi! More cargo and less passengers. I actually wonder if a combi was ever planned like the bottom deck is cargo and the upper deck is roughly an A332 in two class configuration Not seriously. A A380 Combi like that sounds great in theory but is not really attractive in pra...

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by tomcat
Thu Nov 12, 2020 1:17 am
Forum: Military Aviation & Space Flight
Topic: Swing-wing aircraft - why the swing away?
Replies: 23
Views: 2438

Re: Swing-wing aircraft - why the swing away?

Here is a great video about the F-14 design presented by Mike Ciminera, one of the fathers of the Tomcat. The presentation is quite technical, it's really interesting, especially about the layout and structural optimisations and the lessons learned from the F-111B. Also at 43:54, a glimpse of the ve...

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by tomcat
Wed Nov 11, 2020 11:05 am
Forum: Civil Aviation
Topic: Airbus and Boeing 2020 deliveries
Replies: 51
Views: 12123

Re: Airbus and Boeing 2020 deliveries

It's interesting to see that both OEMs have, approximately, the same drop in delivereries of widebody passenger* aircraft. In 2019 (full year) Boeing delivered 178 pax widebodies, while Airbus delivered 173 pax widebodies. So far in 2020 (10 months) Boeing delivered 57 pax widebodies, while Airbus ...

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by tomcat
Sun Nov 08, 2020 5:15 pm
Forum: Civil Aviation
Topic: Updated: LH to restructucture SN
Replies: 169
Views: 39026

Re: Updated: LH to restructucture SN

Some news about SN: - Despite the situation, the African network is doing rather good, both cargo and pax. Some African flights depart with full cabins This is amazing. One has to wonder why these flights are full while the intra-European trafic (as a whole, not just out of BRU) is literally non-ex...

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by tomcat
Sun Nov 08, 2020 1:34 pm
Forum: Civil Aviation
Topic: Updated: LH to restructucture SN
Replies: 169
Views: 39026

Re: Updated: LH to restructucture SN

Some news about SN: - Despite the situation, the African network is doing rather good, both cargo and pax. Some African flights depart with full cabins This is amazing. One has to wonder why these flights are full while the intra-European trafic (as a whole, not just out of BRU) is literally non-ex...

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by tomcat
Wed Oct 28, 2020 7:34 pm
Forum: Civil Aviation
Topic: The Airbus A380 Turns 15 Today (April 27)
Replies: 295
Views: 37235

Re: The Airbus A380 Turns 15 Today (April 27)

In sum I'd say a new 2-decker is probably optimal at 10-8 for 500 seats If true, then the A380 we have today is pretty well optimized, at least with its fuselage - a 500-seater with 10-8 abreast seating. Yes there is the deck height that's been compromised in favor of the ill-fated freighter versio...

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by tomcat
Wed Oct 28, 2020 7:07 pm
Forum: Civil Aviation
Topic: The Airbus A380 Turns 15 Today (April 27)
Replies: 295
Views: 37235

Re: The Airbus A380 Turns 15 Today (April 27)

From my recollection of the discussions on this forum around the time the A380 (or A3XX) was gestating, Airbus was fed up with Boeing selling package deals of 747s and other types; and they felt Boeing was able to cross-subsidize the smaller planes with excess profits from the 747, which had no dir...

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by tomcat
Wed Oct 28, 2020 5:16 pm
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

I saw an interesting tweet which may add to the discussion: "There could be as many as 6,500 mainline passenger jets in storage at year-end 2020" Rob Morris, Ascend by @cirium webinar Ref: https://twitter.com/MaxK_J/status/1321381244073091076 Ascend maintains fleet tracking databases so t...

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by tomcat
Tue Oct 27, 2020 9:53 pm
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

Interesting analysis piece at: https://uk.reuters.com/article/idUKL8N2HE4S5 It points out that before now the plan of record was to go to 45 in Apr 2021 now it's 47 in 'second half' 2021. Seems to suggest (as members here do) the rate 40 is designed to put pressure on unions and governments for con...

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by tomcat
Tue Oct 27, 2020 12:31 am
Forum: Civil Aviation
Topic: A321LR made 7600km flight YUL-ATH
Replies: 15
Views: 5944

Re: A321LR made 7600km flight YUL-ATH

For once, they seem to have used an A321. Probably because of low demand as it is the end of the season. + a certain pandemic going around that has killed air traffic demand... Yes indeed. I've simply noticed that some people describe this flight as a "one off" and I'm trying to understan...

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by tomcat
Mon Oct 26, 2020 10:48 pm
Forum: Civil Aviation
Topic: A321LR made 7600km flight YUL-ATH
Replies: 15
Views: 5944

Re: A321LR made 7600km flight YUL-ATH

Well with the tailwinds, a back of an envelope calculation shows an ESAD around 3800nm. I do not know how many ACTs Air Transat’s A321s have, if they have 3, this is nothing spectacular. Probably took off at less than MTOW as they went straight to FL350. Probably little payload. Wonder what the rea...

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by tomcat
Tue Oct 20, 2020 8:36 pm
Forum: Civil Aviation
Topic: SQ to launch SIN-JFK 3x weekly
Replies: 93
Views: 14831

Re: SQ to launch SIN-JFK 3x weekly

If such a long iconic route will manage to attract passengers and keep them consistently safe (avoiding covid contaminations), it could act as a catalyst to convince the public that flying is safe. Interesting times ahead.

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by tomcat
Sun Oct 11, 2020 5:56 pm
Forum: Civil Aviation
Topic: Air Transat Launches A321neoLR YUL-ATH
Replies: 21
Views: 5335

Re: Air Transat Launches A321neoLR YUL-ATH

Air Transat launches YUl-ATH, scheduled 9 hours eastbound and 12 hours eastbound, very impressive! https://www.routesonline.com/news/38/airlineroute/294291/air-transat-schedules-nonstop-a321neo-lr-montreal-athens-service-in-oct-2020/ YUL-ATH is 4131nm per GCmap so this one-off flight can be operate...

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by tomcat
Sun Oct 11, 2020 5:35 pm
Forum: Civil Aviation
Topic: Air Transat Launches A321neoLR YUL-ATH
Replies: 21
Views: 5335

Re: Air Transat Launches A321neoLR YUL-ATH

Air Transat launches YUl-ATH, scheduled 9 hours eastbound and 12 hours eastbound, very impressive! https://www.routesonline.com/news/38/airlineroute/294291/air-transat-schedules-nonstop-a321neo-lr-montreal-athens-service-in-oct-2020/ YUL-ATH is 4131nm per GCmap so this one-off flight can be operate...

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by tomcat
Sun Oct 11, 2020 2:12 pm
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

I don't know, that's what I'm trying to find out. I have presented the reason why I believe it is not the case, you have confirmed it, but Flee is maintaining that there will be some benefits for missions below 4000 nm thanks to this new MTOW. I haven’t confirmed anything you have said as I am unab...

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by tomcat
Sun Oct 11, 2020 1:02 pm
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

Do you expect me to contact Airbus to understand the benefits of the new MTOW on missions below 4000 nm? I don’t understand your question. When has Airbus mentioned 4000 nm in relation to this MTOW increase ? I don't know, that's what I'm trying to find out. I have presented the reason why I believ...

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by tomcat
Sun Oct 11, 2020 12:39 pm
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

You don't seem to want to read what I'm writing or possibly I'm not clear enough in what I'm writing. In any case, you have provided the best proof that the Airbus press release is misleading. Indeed, you felt the need to come up with a chart to explain what it meant. For the unaware journalist or ...

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by tomcat
Sun Oct 11, 2020 11:09 am
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

For people unaware of the notion of MZFW this part is ambiguous or six tonnes more payload . That's what I was refering to in my reply to Flee who was considering that there would be benefits on missions between 2000 and 4000 nm. There is nothing wrong with the press release, your previous comments...

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by tomcat
Sun Oct 11, 2020 10:08 am
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

Well, it's the gentleman I was replying to who should read this. The press release from Airbus is quite misleading for those not familiar with the details of the weight variants. There is nothing about the press release that is misleading, they have clearly stated it is a MTOW increase. "Airbu...

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by tomcat
Sun Oct 11, 2020 9:55 am
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

I suspect that a 251t A339 will make it as versatile as any A333 - those Trent 7000s weigh a lot more than the Trent 700s and being able to carry a higher payload will improve the A339's economics. This will probably be the most useful on missions that are around 2,000 - 4,000 nm. Except that accor...

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by tomcat
Sat Oct 10, 2020 7:57 pm
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

Yet shifting production to CHS gets lower labor cost and more flexible work rules along with eliminating extra Dreamlifter flights, and a better match of supply to demand. Airbus will have a hard time matching these moves. 14/month cost scaling has gone away. The cheap labor offer is nixed with pro...

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by tomcat
Sat Oct 10, 2020 6:52 pm
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

Except that according the the weight variants presented in the airport planning document, there is no increase of the MZFW hence on medium range missions, this increased MTOW will not allow any extra payload. The MTOW increase will just mean it can carry MZFW around 700 nm further. Well, it's the g...

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by tomcat
Sat Oct 10, 2020 1:31 pm
Forum: Civil Aviation
Topic: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight
Replies: 66
Views: 11079

Re: EASA Approves 9 Tonne Increase In A330-900 Max Takeoff Weight

I suspect that a 251t A339 will make it as versatile as any A333 - those Trent 7000s weigh a lot more than the Trent 700s and being able to carry a higher payload will improve the A339's economics. This will probably be the most useful on missions that are around 2,000 - 4,000 nm. Except that accor...

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by tomcat
Thu Oct 08, 2020 5:28 pm
Forum: Civil Aviation
Topic: Boeing releases new CMO (Current market outlook)
Replies: 61
Views: 7832

Re: Boeing releases new CMO (Current market outlook)

This discussion makes me think that a lot of public money has been wasted to save airline jobs in an environment affected by an oversupply of aircraft (although I take the point from the all the returns are not going on the secondary market with the older ones going straight for scrap). Indeed, if ...

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by tomcat
Thu Oct 08, 2020 5:01 pm
Forum: Civil Aviation
Topic: Boeing releases new CMO (Current market outlook)
Replies: 61
Views: 7832

Re: Boeing releases new CMO (Current market outlook)

The only way I see that happening is there are so many airline bankruptcies that we end up with forced liquidations of old fleets . But that wouldn't be a win for Boeing either, since re-emergent airlines aren't known for buying large fleets of new aircraft. Oh, there are going to be airline bankru...

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by tomcat
Tue Oct 06, 2020 8:25 pm
Forum: Civil Aviation
Topic: Boeing releases new CMO (Current market outlook)
Replies: 61
Views: 7832

Re: Boeing releases new CMO (Current market outlook)

At p.6 of the pdf, I read: Narrowbody airplanes will lead the way to recovery as domestic and short-haul markets are forecast to recover earlier, followed by widebody fleets as airlines progressively bring their networks back online. Among the OEMs and the large suppliers, one company that will real...

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by tomcat
Wed Sep 30, 2020 5:31 pm
Forum: Civil Aviation
Topic: Updated: Boeing to Consolidate 787 Production in South Carolina
Replies: 320
Views: 55444

Re: Boeing Considers Closing 787 Production in WA

No, you're not, but I think most of us don't want it to make sense. I do think there is some sense in keeping it in Washington based on the established workforce and proximity to engineering, but it's at best a close call. However, regardless of the best decision for the 787 program, I think the be...

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by tomcat
Wed Sep 30, 2020 5:06 pm
Forum: Technical/Operations
Topic: A350 composite construction vs 787
Replies: 11
Views: 2966

Re: A-350 composite construction vs 787

Regarding the A350 fuselage assembly, the following article doesn't make it sound 'easier to construct' than the 787 fuselage. Here are a few quotes revealing the complexity of the A350 fuselage assembly. Airbus enclosed each of the A350’s five major fuselage sections with four large shells or pane...

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by tomcat
Mon Sep 28, 2020 3:29 pm
Forum: Technical/Operations
Topic: A350 composite construction vs 787
Replies: 11
Views: 2966

Re: A-350 composite construction vs 787

Here is the catalogue of an A350 parts supplier. Use CTRL+F and you will find the following section: Shims for adjusting the fuselage assembly. More than 350 references per Aircraft https://www.duqueine.fr/en/2-1-aeronautique/2-1-1-aeronautique-a350/ Not the same thing. fixed size shim for load dis...

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by tomcat
Mon Sep 28, 2020 11:02 am
Forum: Technical/Operations
Topic: A350 composite construction vs 787
Replies: 11
Views: 2966

Re: A-350 composite construction vs 787

All this time I had thought that CAD design systems since the mid-90s virtually eliminated the need for shims. When I was at Boeing, I was told by a reliable source that up to 1,000 lbs of shims could be used on a 747-400, and that the goal for the 777 was to get that to zero. A well thought design...

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by tomcat
Sun Sep 27, 2020 11:12 pm
Forum: Technical/Operations
Topic: A350 composite construction vs 787
Replies: 11
Views: 2966

Re: A-350 composite construction vs 787

Here is the catalogue of an A350 parts supplier. Use CTRL+F and you will find the following section:

Shims for adjusting the fuselage assembly. More than 350 references per Aircraft


https://www.duqueine.fr/en/2-1-aeronautique/2-1-1-aeronautique-a350/

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by tomcat
Sun Sep 27, 2020 11:09 pm
Forum: Technical/Operations
Topic: A350 composite construction vs 787
Replies: 11
Views: 2966

Re: A-350 composite construction vs 787

With the recent issues regarding problems with ‘shimming’ on the 787 I’m wondering if AB with their different ‘panel on frame’ composite design has or has had similar issues? It would seem to be a simpler design that would be easier to construct to higher tolerances and would avoid such issues ? Ge...

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by tomcat
Sat Sep 26, 2020 10:31 pm
Forum: Civil Aviation
Topic: EasyJet 'hanging by a thread'.
Replies: 41
Views: 12853

Re: EasyJet 'hanging by a thread'.

According to BBC news, easyJet is very close to bankrupcy. The claim comes after a leaked recording was obtained by BBC where an airline union official Mr Entwisle, states, that if easyJet will not make considerable cash this winter, it will go out of business. EasyJet will not earn a profit this w...

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by tomcat
Fri Sep 25, 2020 9:33 am
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

I would also point that we may be too western-centric in our analysis of the state of the airline industry. I just had a look at Air China traffic data. In August, their domestic RPKs were down 17% only vs Aug 2019 while the overall RPKs were down 49%. It's not as dramatic as the figures we see in ...

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by tomcat
Thu Sep 24, 2020 10:38 pm
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

I don't think the issue is the fear about the lack of health safety. What is refraining people to travel by plane are more practical issues: travel bans, the quarantine requirements and the risk of having the return flight cancelled with no alternative to fly back home. Nobody will plan a one or tw...

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by tomcat
Thu Sep 24, 2020 8:45 pm
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

On a more optimistic note, the airlines are not done fighting to get the passenger demand back to a more substantial level. Look at the protocol that Lufthansa is trying to implement: https://apnews.com/article/virus-outbreak-germany-travel-airlines-5860e7c3adf1edc863662caa6aaa978a If implemented, ...

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by tomcat
Thu Sep 24, 2020 5:27 pm
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

The issue is neither can afford the size of hole they are digging financially. Indeed. It seems they misjudged the situation. They thought they could get the markets to loan them enough money to get through a few months of crisis and everything would be better by then. Turns out that governments an...

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by tomcat
Wed Sep 23, 2020 10:46 pm
Forum: Civil Aviation
Topic: The case for more aircraft production cuts/playing chicken
Replies: 397
Views: 43924

Re: The case for more aircraft production cuts/playing chicken

I just think order deferals and conserving cash are the order of the day. Interesting article at FG ( https://www.flightglobal.com/aerospace/spirit-predicts-asco-purchase-will-terminate-describes-bombardier-buy-as-uncertain/140268.article ) about Spirt Aerosystems's various acquisitions now being &...

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by tomcat
Mon Sep 21, 2020 10:24 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12605

Re: Updated: Airbus unveils three hydrogen concepts

We might take this seriously if Airbus had actually launched a programme, but they in fact just did a big PR push from the work of a few graphic designers. No aircraft programme, no technological roadmap, so nothing much to get excited about. Well, there is a bit more than a PR push. It's related t...

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by tomcat
Mon Sep 21, 2020 10:04 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12605

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

One thing that I can also see is at-airport generation of Hydrogen. It's a pain to transport volume wise - but if you can take renewable energy and build hydrogen generators at airports as part of their fuel farms, you can avoid needing the infrastructure to transport it long distances. Something n...

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by tomcat
Mon Sep 21, 2020 9:39 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12605

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

One thing that I can also see is at-airport generation of Hydrogen. It's a pain to transport volume wise - but if you can take renewable energy and build hydrogen generators at airports as part of their fuel farms, you can avoid needing the infrastructure to transport it long distances. Something n...

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by tomcat
Sat Sep 19, 2020 5:48 pm
Forum: Technical/Operations
Topic: Why no more multi-slot flaps?
Replies: 32
Views: 4270

Re: Why no more multi-slot flaps?

The A300 and A310 wings also had less sweep (28°) than their closest Boeing equivalent, ie the 767, which had a 31.5° sweep. Less sweep is beneficial for the low speed characteristics and that helps to keep a simpler flap design (other things being equal). That's a good point. The original 777 had ...

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by tomcat
Fri Sep 18, 2020 8:19 pm
Forum: Civil Aviation
Topic: Airbus is stepping up development A321XLR
Replies: 233
Views: 39496

Re: Airbus is stepping up development A321XLR

MoKa777's link to anna aero refers to trip cost, not CASM. Don't ignore this: Naturally, lower-capacity aircraft result in higher unit costs as there is less output over which to spread costs, and therefore higher breakeven fares. Based on Dublin – Newark, RDC indicates that the A321neo would have ...

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by tomcat
Fri Sep 18, 2020 7:38 pm
Forum: Civil Aviation
Topic: The Airbus A380 Turns 15 Today (April 27)
Replies: 295
Views: 37235

Re: The Airbus A380 Turns 15 Today (April 27)

I think the bigger issue with comfort with respect to air travel is that the marginal cost of a meaningful amount of additional comfort is very high I don't deeply disagree but you're talking about price again whereas I was talking about value. Value is a human concept not subsumed by price. When i...

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by tomcat
Thu Sep 17, 2020 3:15 pm
Forum: Technical/Operations
Topic: Why no more multi-slot flaps?
Replies: 32
Views: 4270

Re: Why no more multi-slot flaps?

Seems like with the exception of the A321, Airbus has preferred the single slotted flaps from the start for all their planes? Their first designs/widebodies (A300/A310) weren’t really heavy for the time; light twins, for relatively shorter routes. The next generation were essentially a half generat...

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by tomcat
Thu Sep 17, 2020 2:13 pm
Forum: Civil Aviation
Topic: Airbus is stepping up development A321XLR
Replies: 233
Views: 39496

Re: Airbus is stepping up development A321XLR

Given the topic and points under discussion, I think this article (published 2 days ago) may offer some insight or be a springboard for more discussion: Aer Lingus to use A321neos to Newark + Toronto, with its A330-300s having 50% higher costs, RDC Apex platform shows https://www.anna.aero/2020/08/...

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by tomcat
Wed Sep 16, 2020 6:01 pm
Forum: Military Aviation & Space Flight
Topic: Greece Getting 18 Rafales
Replies: 32
Views: 4704

Re: Greece Getting 18 Rafales

When Greece went into financial meltdown a decade ago, with massive cuts and a lot of political instability, it's odd to note that there did not seem to be any real defence cuts, witness those F-4's still flying, you'd have thought that old equipment would be have phased out then, It's not as if we...

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by tomcat
Wed Sep 16, 2020 5:39 pm
Forum: Military Aviation & Space Flight
Topic: USAF PCA and other 6th gen fighters
Replies: 142
Views: 23584

Re: USAF PCA and other 6th gen fighters

That's good news for the airframe development but then what about the systems and equipment's of the said airframe? It's usually them (and sometimes the engine) that are ever delaying the entry into service of new fighter jets. Problems with system integration is different than airframe integration...

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