Dear A-netters, I would have a question related to the envelope protection system of the A320 series in this situation (double engine failure): What flight mode will be active if both engines will fail, causing also a failure of both green and yellow hyd systems? Would it stay in normal, degrade to ...Jump to post
(...) On ailerons - the stiffer Airbus wings allow just out board devices as you do not get roll reversal. The Boeing wing has both outboard and the flaperon inboard because of the potential for roll reversal. Dear StTim, I have one question about "roll reversal" and the need for inbord a...Jump to post
Dear a.netters, There seems to be a heated debate about the proper assessment of seating capacity of airliners, mainly fueled by the fact that there isn't a unique way to configure seats on a plane. May I kindly suggest that we should use the unit of cabin space in m² for our comparisons? This woul...Jump to post
Dear a.netters, There seems to be a heated debate about the proper assessment of seating capacity of airliners, mainly fueled by the fact that there isn't a unique way to configure seats on a plane. May I kindly suggest that we should use the unit of cabin space in m² for our comparisons? This would...Jump to post
There must be significant benefit to the 777X to split the outer flaps into two sections - adding additional flap tracks is not good for the overall aerodynamics so the benefit must be somewhere.... Dear StTim, I could imagine that the splitting of aerodynamic devices on wings (slats, flaps, ailero...Jump to post
[quote="Armadillo1"]can you appoint me inboard aileron on this picture? Dear Armadillo, I could guess that he meant that the ailerons on the A350 are split. Of course, both of these ailerons (two on each side) are located outside of the outer flaps, so it's a very different design than the...Jump to post
Hello, For a bit of historical context: the Airbus project initially settled on the "A300" designation, where the number "300" represented the intended passenger capacity. Likewise, the shortened version of the A300 was to be called "A250". For reasons unknown to me, th...Jump to post
what is a "water volume"?
Have they clarified what the "modified landing gear" is? I don't have any information suggesting a major re-design - like a "telescope-style" or double-bogey gear (as it was used on some early 320s for Air India). I suspect it's merely a reinforced version allowing to handle the...Jump to post
As stated in other posts this can vary from airport to airport and country to country. In general the following applies to larger airports in the US. Go around/balked landings, only one landing fee no matter how many attempts. Approach to airport A then divert to airport B. Only airport B will get ...Jump to post
Dear a.netters, I would like to ask a few questions about landing fees in special/abnormal scenarios. In normal operations, things are quite clear to me: When you land an airoplane at the destination airport, you'vo got to pay the landing fee. Now, what happens in a few special / abnormal operation ...Jump to post
There is reportedly up to 300kg per hour fuel burn difference between older a350-900s and the newest ones with larger winglets (and other mods) for similar payloads and trip lengths. Dear xwb565, This 300kg figure would mean a 5.5% difference between "old" and newer 350-900s - this sounds...Jump to post
Fun facts: At the time this aircraft was built - The Berlin wall was still erect (and would fall only 3 months later) - There was no WWW. The first WWW server would go online 2 years later (CERN). - World population was approx. 5.2 billion. We are standing at 7.7 billion at time of this writing. - T...Jump to post
Correct the elevator on the DC9/MD80/90/717 is a floating elevator.The control cables from the the flight deck are connected to a small control tab on the trailing edge of the elevator. The pilots move the tab and essentially fly the elevator to the required position. Douglas did this so they would...Jump to post
(...) If we put everyone on the grid, has anyone come up with a practical plan to provide the electricity? As it is right now, 63% of electrical power in the U.S. is from fossil fuel powered power plants. Unless we go to nuclear, none of the alternatives to fossil fuel are viable. Dear stratclub, I...Jump to post
The original fuselage design for the A300 was 6.4 metres in diameter for nine or ten abreast, to permit through-ticketing with the 747 without reseating. Sadly there was a bit of a market downturn and the partners panicked that they were 'oversizing' so shrank it down to 5.64 metres for the A300B. ...Jump to post
A Cessna 172 when stalled, the nose pitches down and the stall warning indicator sounds. This doesn’t happen in an Airbus 320. When the 320 stalls there is no nose pitch down moment indicating a full stall. It just mushes and starts “falling out of the sky” in a nose level wings level attitude. The...Jump to post
Hello, There will be a slight trip fuel burn advantage for the 762ER, this advantage may shrink on very long missions. The total cost of ownership will be significantly lower on a 762, as they are much older. You just need to find one, many of them being gone already. When it comes to winglets, the ...Jump to post
The legend says that the A380 has way better economics than the B748 ,how comes LH are getting rid of the whale and keeping the queen ? While I don't have the official answer, my guess would be cargo capability. The 748 is great for carrying lower deck cargo in addition to pax, the A388 not so much...Jump to post
Regarding LX: The replacement of the A333 is due for 2030+. They need an imminent replacement for the A343 from 2025 onwards. So my guess is they will get A359 to operate it next to the A333. B789 doesn't make sense at the current stage. They could also replace all 5 A343s and 14 A333s with the 20 ...Jump to post
Are the 789 for Swiss? I would say that at least a part of that order will end up to replace 6x763ER and 6x772ER at Austrian, as their fleet is in the most urgent need for replacement. Swiss has a brand new subfleet of 77W (2 more coming soon for a total of 12), a reasonably new fleet of A333 and 5...Jump to post
Dear Vinicium, While pilots can land an aircraft (from ultralight to A380) fully visual and flying it by hand, there are many kinds of assistance systems available, for example: - ILS - a radio based system that guides the pilot to a correct landing course and glideslope, even in poor visibility. - ...Jump to post
Interesting side note: I have early documents from 1972 about the then-new A300 project. The cabin mock-up included therein shows both 2-4-2 and 3-3-3 layouts for the economy cabin.
So, squeezing more people in the original Airbus widebody design is a fairly old concept...
The A350 uses three multifunction probes that combine pitot, AoA and TAT detection to feed the three primary air data systems, labeled "2" in the pic. Additionally, there is a standby AoA sensor, labeled "7", a standby pitot, labeled "6" and two OAT probes, labeled &qu...Jump to post
The A300 could indeed take off without flaps, but in every case the slats would be deployed. For landings, both slats and flaps would normally need to be deployed. If the slats are inop - e.g. because of a system failure - QRH procedure must be followed which requires a higher approach speed. The A3...Jump to post
Dear GalebG4, I hope I have got your question right, please disregard if I misunderstood you. The best way to assess the optimum mission profile for a given aircraft is to have a look at the payload-range chart. The first point that is of relevance for the performance assessment is the first kink in...Jump to post
I would throw in my home airport of Vienna, Austria (LOWW/VIE). If rwy. 11 is used for landings - that happens at times - you will enjoy a beautiful approach right over Schönbrunn castle.
Fortunately for the habitants, most approaches are carried out towards rwys 16/34 or at night on 29.
That's interesting, I wonder what the advantage is over a (737)-500 or -600. Does the JT8D make that big a difference? Dear DeltaDart, The JT8D used on the 737-200 has got a significantly smaller fan diameter than the CFM56 on the later generations. This increases the ground clearance to reduce the...Jump to post
Someone correct me, but I think this is how they're set up: 100: 46" front and rear (commonality with the 707) 200/300: 48" front and rear 400: 50" front and rear 400ER: 50" front, 51" rear -8: 50" front, 52" rear Very interesting, thank you for the detailed answer!Jump to post
Whilie this - if confirmed - is not at all a surprise, it is still a rather sad moment for Airbus and aviation industry in general.
Farewell, big whale!
Dear akb88, First of all I appreciate your open words a lot - expressing your fear certainly is a good first step to overcome it. Technical arguments like "flying is an extremely safe means of transport" are certainly valid and proven, but they likely won't help you to overcome your fear. ...Jump to post
https://www.aero.de/news-30854/Germania-verpasst-Gehaltstermin-im-Januar.html Latest news: Germania CEO Carsten Balke informed his employees that the salary payments for January will be delayed. Payment was due today. Also, there are reports of employees calling in sick. The background is that the ...Jump to post
I once sat in a middle seat, next to an elderly person with a breath that made me wonder if he was still alive. Well, he was very much alive and has a whole lot of things to tell me. I didn't want to be unkind so I kept listening.
I would have appreciated to have a lockable nose like a dolphin...
Granted, DL's birds are denser, but they could also up their extant aircraft to 277T with the stroke of a cheque, as well as uprate their TBD aircraft to 280T by the same means. Dear LAX, I would be interested to know what such a check would amount to. Are we talking about 100k$, millions? Best reg...Jump to post
Doesn't matter, even if the airplane can be imported, the airline still needs an FAA inspector to add the aircraft to the airline's opspec in order to place it into revenue service. The FAA inspectors are not working. So no new planes have been placed into service since December 22. Dear Woodreau, ...Jump to post
Our airline has aircraft awaiting delivery from Airbus, but can’t import the aircraft due to the shutdown, but even if they could import it, the FAA inspectors aren’t able to add the aircraft to the airline opspecs in order for us to put the aircraft into revenue service. Dear Woodreau, Could there...Jump to post
It's strange to me that the structural efficiency (OEW/MTOW) is so much worse for the A220 than the others. DC-7: 51% CV-880: 46% A220: 58%. Carbon fibre is weaker than 1950's aluminum? Design tools were better in 1950?? Hello kitplane, I am very confident that both materials and construction tools...Jump to post
I'm going to guess that in the late 50's if even premium auto gas was 30-35 cents a gallon, Aviation Hi Octane was probably 50 cents? My point being, the relative cost of fuel per seat mile. While the CV-880 ( the best comparison? maybe a B-720?) gobbled kerosene, it was darn cheap . Maybe someone ...Jump to post
PS, where did the 1570 kg/hr for the A220 come from. That is better than the numbers I have. I think all three planes have their fuel burn underestimated for a mission by a significant amount. Dear lightsaber, Thank you very much for your answer. I have taken the fuel burn figures (all 3 of them) f...Jump to post
Dear fellow A-netters, Today, I am following up to an earlier, similar post http://www.airliners.net/forum/viewtopic.php?f=5&t=1388811 where I compared the performance and economics of an A321-200LR to a Boeing B707-320B, which was found interesting by quite a few readers. For this second round ...Jump to post