I am curious too, and I will get the numbers right out of the computer when a certain airline gets theirs delivered. Though I am critical of one airframer just following and then blatantly copying Boeing in many regards, the 737 has become an embarrassment. Always too narrow, always too low, always...Jump to post
XAM2175 wrote:My understanding though is that this style of door, regardless of the exact method of emergency opening, has a greater risk of being rendered unopenable by fuselage deformation than both older and newer types..
Just a quick thought, with the recent denial of global warming from a major country in the west side of the pond, how will that impact the development of 'green' airport? I thought the incentive is there, cause the energy itself isn't free, and lower energy consumption = lower cost = lower landing a...Jump to post
I am one member who always wanted to join a.net but only recently I could, after a.net made it free for us to join. And please, I'm not a native speaker myself, and learning a new language isn't that easy. I think everyone should try to learn a new language just to appreciate how difficult it is (no...Jump to post
Sure, foldable wingtips is good option if your gate space isn't limited. But, it increases wing stress and weight from hydraulic actuators and associated plumbings. Folding wingtips also increases wing bending. You need stronger structures >>> weight increases. Besides, you need longer range to reco...Jump to post
Are the oxygen tanks in the cockpit 100% oxygen? Air at sea level is only ~21% oxygen. Cockpit oxygen systems are bottled oxygen, 100%. Passenger oxygen is either chemically generated or bottled but still 100% oxygen. We breathe air (as in the mix of gases in the atmosphere) in normal operations bu...Jump to post
Could be a mixture of water and isopropyl alcohol, which is sometimes used for deicing in general aviation. In any event it looks ghetto, and the whole process looked pointless because they really didn't cover much. It looks like no harm no foul, except that this is Turkish airlines, a supposedly w...Jump to post
AA737-823 wrote:The A321 with a CFM56 will sometimes feature them, albeit on the core exhaust nozzle, rather than the bypass.
Apparently the noise reduction is a meaningful amount, but so is the increase in fuel consumption.
Well, I believe someone more competent will come, but this is my $0.02. With optimal aft CG, that means less downforce required from horizontal stabilizer, meaning less AOA from horizontal stabilizer. Less AOA means less lift (negative lift in this context, but lift nonetheless). Cause lift creates ...Jump to post
The wing stalls at the same AOA. Since most aircraft you can't see the AOA value directly we have to use airspeed to determine what the stall speed is. The problem is that airspeed only works at 1g. As soon as you change g loading the airspeed at which the aircraft stalls changes. But the AOA remai...Jump to post
245 tons? That's nice. After 242 tons now, A330neo will have 245 tons option. I bet it will steal some orders from 789, especially for airlines who currently owns A330. A side question: can we retrofit A330ceo with neo engines and systems to make A330ceo >> A330neo, especially the 242 tons version w...Jump to post
The only thing I can think of that would produce toxic fumes would be something in the bleed system itself, like oil contamination in the ducts. Personally, I've never experienced such a thing in hundreds of flights as a passenger and pilot. Having said that, coming into some airports you'll someti...Jump to post
Well, I think the best solution is to conduct worldwide survey about standard body measurement. That way, we can cram as much people as possible without sacrificing comforts.Jump to post
Lol. The air quality in this country is not that good, that actually after few hours of flying the air on the ground stinks. Being said, in here the air in the plane is better than at the ground. Oh yes, people are pig. I've found not only once or twice, but many times people chewing gum and put the...Jump to post
bhill wrote:Could the size of the propellers have been a factor as well?
I've flown both on 17" and 18", and frankly I cannot tell the difference at all. I still have a lot of wiggle room, even on 17" seat. Mind you though, I'm an Asian and here we're slimmer. The main problem is, people are getting bigger and bigger. 17" seat was there for quite a lo...Jump to post
So the consensus here seems because it was leftover tradition from taildragger days, it's safer because it puts people away from spinning props, and because sometimes it's the only practical design.
Thank you very much for your valuable discussion, sometimes I feel like I ask dumb questions
There definitely would be demand for a modern A300/310-200 specifically designed for short to medium routes, but I doubt there would be enough demand to make the project financially attractive to Airbus All the subsequent widebodies have big heavy wings, and are designed for much longer routes. Why...Jump to post
I was reading that it is about the stage length they are doing. I think turnaround time is usually meant for the time needed by the airplane staying on the ground offloading and loading passengers and cargo... The doors are seldom the limiting factor. The limiting factor are passengers blocking the...Jump to post
What about torque forces from the wing changing as the lift changes? Wonder if they had to do any unusual CG tests or it was all theoretical and a pretty known quantity in the 744. Fred I don't think they need to do that. The tank itself, being heavy, must be located as close as possible to the emp...Jump to post
Oh, and maybe because props doesn't have shrouds around them to clearly mark the limit of the prop? :D One scenario I can imagine about running the engine whole time is only when you're on military charters or quick turn-around with left-hand side engines shut. Otherwise, the ground crew will see to...Jump to post
Getting 240 people off of a single aisle plane takes time. 753 has widebody turn time. New tech won't fix that. If it is a wide body instead of narrow body, it would still have "widebody turn time"? Widebody has larger doors, I think that means less time to pass through for the same numbe...Jump to post
I suspect a lot of it had to do with how the early propliners were laid out. The DC-4, for example, had its engines mounted up close to the flight deck, so there was little room for loading if the door was there next to the engine. That's why they moved it aft. As to why they boarded on the left, t...Jump to post
I think the handling won't change too differently (maybe there are slight differences from CG, but still in the normal envelope) but the airplane will jump quite a bit (lost of weight means excess lift)Jump to post
I´d go for option 3. Maybe there is no market for such plane. The "waiting for Boeing" argument makes no sense, if there is a market segment big enough to make it worthwhile to explore with the MoM in competition, it surely should be worth taking without the MoM launched. Strangely enough...Jump to post
??? Around Asia many airlines are using A330 and etc. in these short, high demand route even when there are no lower mtow version, what's the problem? Maybe because it's highly used in the region so the support is widely available, the resale value is good, and it can be used for longer routes in a...Jump to post
Apologies if this has been asked before :smile: The title pretty much sums it up. Why back in the days of propliners you board the aircraft from the rear door? Obviously for taildragger it's easier because it's the lowest part of the aircraft, but when they switch to DC-4, why did the arrangement pe...Jump to post
There was an A300NEO. It was called the A330. Yes. However I think Airbus is offering only the A330-300 as a regional variant? Is it available for the A330-200 variant? Yes, I wanna say the same thing too, A300neo is A330. A330-300 is higher capacity variant, less airframe weight per pax compared t...Jump to post
To give check captains a lot of questions they can shoot at you during a line check. :D In the cruise, fuel is transferred aft, which moves the CG aft. This decreases fuel consumption by a percent or two. As fuel is burned off, small forward transfers are made to keep the CG within target limits. I...Jump to post
The APU is fed from the trim tank if there is fuel in it by using the aft APU fuel pump, and from the wing tanks otherwise using the forward APU fuel pump. If the standpipe should be empty for some reason (well, not so much empty filled with air) you can't start the APU as the fuel won't be sucked ...Jump to post
I'm surprised no one mentioned visibility factors yet... I think it's far easier to taxi when you can see what's in front of you. Imagine 747 with taildraggers, the cockpit will be sitting very high in the air, you can't taxi properly. Also, I believe because we're used to have almost neutral pitch ...Jump to post
Well this thread shows MD-80s has in the past special exemption if needed.
I came across this document which says MD-80 are ETOPS certified, though I can't verify this http://aviationenglish.club/wp-content/ ... -ETOPS.pdf
BAW1 is the LCY-SNN-JFK A318. I get the aspect of an All-J flight being unique, but I personally would love for it to be an LHR-JFK nonstop. I think the main purpose of LCY-JFK is to cater businesspeople with service directly to the center of the city, which is defeated by LHR/STN-JFK... Of course ...Jump to post
But by law all airliners are required to be able to evacuate under 90 seconds with half of the exit blocked. So why does a stuck obese person in a single overwing exit becomes a problem? It's no worse (maybe even better) than people retrieving their luggage from overhead bins during emergency.Jump to post
I'm wondering, what's the procedure for fuel fumes or spill inside the cabin? Sure it won't be a good thing.Jump to post
May the force be with her. RIP.Jump to post
Something I remember from an EMT textbook is that blood pressure measurements taken on aircraft are very often wrong. I'm what way are they wrong? Do you mean it's always higher or lower than normal or is the blood pressure measurement at altitude not indicative of what the body is experiencing? Oi...Jump to post
How do you determine sacrificing altitude vs cabin pressure in terms of total engine loss? You don't, at least not on the Bus. Reaching a suitable airport/landing site is of the highest priority. In absence of bleed pressure cabin altitude will rise slowly, but it should not be a rapid decompressio...Jump to post
Hope this helps. When you're flying, your body pressure is about the same as sea level (assuming you're living on a sea level). When you climb, the pressure outside decreases so there are differential pressure between your internal cavities and external air. Because the internal cavities is pressuri...Jump to post
No need to retrain pilots or FAs (maybe mechanics needs training though), no need to stock spareparts of brand new types (I believe many of A330ceo spare parts are compatible), maybe they can get it earlier than A359, and maybe Airbus has some deals they cannot refuse.Jump to post