It really isn't all engine. The A350 wing is much more efficient than the A330/A340. The cruising altitude and speed of the A350 are quite different compared to the A340. Several thousand feet higher initial altitude. M0.85 compared to M0.81-0.82 doesn't sound like much but over medium and long hau...Jump to post
I'd be curious how much of the efficiency of the A350 over the A330 (and over the B747) comes from a lighter structure. The A350-900 has an OEW of 115,7t, whereas the A330-300 has 122t (Wikipedia). However, the A350 carries about 10% more people at similar layout. The OEW difference itself will res...Jump to post
Let's look at the cost: Jet A1 fuel currently costs approx 0,64€/kg and contains about 12kWh/kg. The cost per kWh is therefore about 5,34ct/kWh Electricity for industrial scale users currently sells around 6-7ct/kWh. Now assuming an overall efficiency of a modern turbofan engine of 40% and the one o...Jump to post
Would it be possible to show a picture?
I am sure there is someone in the forum who knows the answer!
Indeed. Even in an emergency descent, the pitch angle is not very steep. I can't remember exactly but my impression is that you don't exceed around negative ten degrees. Dear SB, This sounds absolutely logical. Assuming an emergency descent rate of 8'000fpm, this is a vertical speed of approx. 40m/...Jump to post
One example from Austria: The connection between Linz and Vienna was dropped after the high speed rail connection was opened a few years ago.
It's likely that in a few years from now, also Salzburg-VIE and Graz-VIE will shift towards HSR connection.
I would say no as well.
A 358 would find itself in the same black hole of the market like the 319-NEO. As other said, there are plenty of offerings that cover this market segment in the form of the 359 and 330 NEO.
I would be interested to know what you think Airbus should do next in the WB segment?
By design, Airbus aircraft are very similar in cockpit and procedures. From the example above, the A330 and A340 are pretty much the same aircraft type. The A350 is a bit different but certainly close enough for a common rating. (...) Dear Starlionblue, I would think that the 340 requires a bit mor...Jump to post
As long as patents don't get into the way...Jump to post
Adding further speculation:
Could they be markings for sensors that detect the presence of an airplane?
Pan Am’s 707-121 turbojets never flew LAP-IDL nonstop. The outbound leg out of New York stopped in Gander and the return to the United States stopped in Keflavik. Not occasional stops, daily scheduled stops. And American Airlines’ 707-123 turbojets even made occasional stops for fuel operating IDL-...Jump to post
Dear all, Sorry to have unintentionally opened a can of worms here. :-) My remark about the whole fleet of UA being capable to fly LHR-BOS did not imply that UA should start flying narrowbodies on that route, or that all NBs are actually ETOPS certified, or that it would make economic sense to use 7...Jump to post
Highly interesting topic indeed! To contrast with the complexity of the 777 spoiler system, here is the observed control logic in the Fokker 70/100: When weight on wheels: all spoilers up. No speed brake or aileron augmentation functions to my knowledge. There is a speed brake in the tail cone though.Jump to post
I can report this exact same behaviour on the Fokker 70/100. Every change in engine power was accompanied by a clearly noticeable change in air flow into the cabin.
Fortunately, this did not affect the cabin pressure level, so my ears did not complain about it.
Dear all, This is a highly interesting read even though I am not an aviation professional. One side question arises: What happens if you are doing maintenance on a big jet and you happen to get "stuck" - like a system not behaving as expected, or a maintenance manual that gives unclear ins...Jump to post
I joined this forum to have a question answered, I don't have any aviation knowledge but was on the golf course that day and was about 100 yards from impact. Let me start by stating I noticed the sound was lower that the rest of the jets that day, I turned to locate the jet and then heard the sound...Jump to post
Also, not exactly a "scheduled" (as in "regularly operated") flight, but Austrian flew a 777-200ER from Vienna to Sydney for Covid repatriations. Close to 18h, a remarkable endurance for a 777E! https://www.flugrevue.de/zivil/nonstop-wien-sydney-laengster-flug-in-der-geschichte-v...Jump to post
Maybe a look into the past would reveal some extraordinary long flights performed by DC-7C or Lockheed L-1649 Starliners? From the data I have available, they flew at roughly 500km/h with an autonomy of roughly 9000km, theoretically resulting in 18h flights. I would be grateful if someone with bette...Jump to post
Your wish came true, three class confguration is confirmed, but actual layout is unknown. They will roll out new Business Class, Premium Economy Class and Economy Class. Confirmed in Airbus press release today. https://www.airbus.com/newsroom/press-releases/en/2021/07/condor-selects-airbus-a330neo-...Jump to post
While I can't answer based on hard facts, my bet would be on shorter range aircraft, as these will lose less weight in-flight. I would not be surprised if an ATR 42 could reach FL250 after taking off at MTOW. Also, the shortest aircraft of a family sharing the same wing, e. g. A318, B736... might be...Jump to post
SAAFNAV wrote:But it keeps you busy on long flights. We had some engineers who'd get creative with their questions with new F/E's, and you'd better know which parts on the C-130 was made of wood.
Dear a.netters, I am reading with great pleasure and interest the technical topics that are discussed in particular in this sub-forum and it appears that we've got a number of contributors who seem to know even the tiniest details about specific aircraft systems, parts, procedures etc. Many of them ...Jump to post
I don't know the A320 but if memory serves, on the A330 it's about 800kg per hour per engine at ground idle. So in total about 27kg per minute.
Hello Vladex, Challenge accepted. :-) I take the following starting point: conventional airplanes burn approximately 1/30th of their current weight per hour - as an example an A320 would burn about 2.5t per hour at an assumed weight of 75t. Assuming an energy density of 12kWh per kg of kerosene, the...Jump to post
LH707330 wrote:The 400X became the 400ER, which as the article mentions is barely externally different. The only physical change is the very slightly larger tires (51" vs 50" IIRC), which in 144 is negligible.
Dear all, May I expand the question towards the next generation of these aircraft: A321N and 737-Max9? I could guess that the 321N takes a better advantage from the newer engine, since it allows a bigger fan than its counterpart on the Max, but this space issue had been present on the 737 since the ...Jump to post
A few years ago we had a weight savings program for our aircraft. They told us each kilogram removed from every aircraft in the fleet would save €30.000 per year. [...] I have not weighed the ladder assy on the A330/340 but I assume it's around 10kg or somewhere in that ballpark. Hello Horstroad, I...Jump to post
Hello! Let's take an ATPL pilot with a A320 type rating. As far as I know, this license will allow the holder to fly all A320 series jets, obviously. But what types of aircraft are implicitly included, so they can be flown without any additional license/type rating/mandatory training? Single engine ...Jump to post
Starlionblue wrote:I've gone through the avionics hatch in the cockpit, into the avionics compartment, and into the forward hold.
Interesting: It looks like they no longer use Times New Roman for the name of the country. The have a new font which IMHO looks not very professional. The first A350 for Luftwaffe still has titles in Times New Roman. Yes, this is correct. They changed the font from Times New Roman to "Bundes S...Jump to post
Looking at the A380 technical data doc that I found here: https://www.airbus.com/content/dam/corporate-topics/publications/backgrounders/techdata/aircraft_characteristics/Airbus-Aircraft-AC-A380.pdf If I read it correctly, it looks like the max weight variant has an MTOW of 575000 kg (1,267,658 lbs...Jump to post
Discarded aircraft tires, new or old, are welcomed in other industries: Dear Rotax, I can confirm that. My uncle owns a farm in Germany and his manure trailer was equipped with 4 large aircraft tires. They were much less inflated (about 2bar / 29psi) to better distribute the load on a large surface...Jump to post
The explanation for why you might derate on a contaminated runway is a bit complex, but bear with me.
Check out the state of the aircraft and how much further damage was done when it was lifted. No was was this ever going to be an 'economic repair'. https://www.baaa-acro.com/crash/crash-airbus-a320-new-york OK, no further questions - the electronics bay and all other sensitive systems were submerge...Jump to post
Starlionblue wrote:On a contaminated runway, it could well have been a fixed derate.
Dear all, Thank you very much for your educated and first-hand information. I hope the cause(s) of this terrible catastrophe will be found soon. I just had a though for the investigators now listening to the CVR - how horrific it must feel to know that you will be listening to the last moments of tw...Jump to post
I remember reading about an Air Berlin A320 that performed a commercial flight within Germany (Munich-Hamburg or similar) during the grounding due to the Icelandic volcano Eyafjoll. As the upper airspace was closed, the crew flew VFR below a rather low cloud base around 4000ft, which was widely crit...Jump to post