If you were getting a little close in trail behind a heavy, and had an inkling to expect a wake encounter, would it not be a good idea to click off the AP? Studies have shown that the autopilot will actually recover from wake turbulence better than a pilot will, a pilot will tend to over correct. S...
Jump to postI don’t have a strong opinion on the performance limitations of the A35K between AUH and ORD, but I will point out that DOH-AKL is eastbound while AUH-ORD is westbound. It’s not necessarily surprising that QR would have fewer operational limitations when flying with the prevailing wind out of DOH, ...
Jump to postThe more pertinent question is what was RTOW on that particular flight? 301T could have been RTOW on that particular flight, meaning it left weight restricted. It's not at all unusual to see EK use up every kg of available payload. There is some man made obstacles at AUH in the takeoff path, if the...
Jump to postabies111 wrote:Are any PIPs expected for RR's T-XWB 97 engines in the lead-up to actual 777X deliveries to airlines?
Polot wrote:Yet the LM6000 does not hang off any jet.
Am I ? Who is saying that only TSFC is only used on large jet engines.
Jump to postMight be being a bit lazy here but do they have a presence in OAK? How much of an operational challenge does this become? Would they transfer the aircraft over to SFO or transfer pax over to OAK? I’m not sure how these things are handled. Not a question directly to you Blerg. Fred The crew should h...
Jump to postHere’s another: CVFP, charted visual flight procedure, which is what SFO usually uses. FMS Bridge Visual, Tipp Toe Visual, or Quiet Bridge Visual. There is lateral and vertical guidance available on these, if it is in your database, or you can build it using the waypoints on the chart. But the guid...
Jump to postFrancoflier wrote:As stated by Flipdewaf and Polot above, in the context of a large jet engine, the only type of SFC used is TSFC since thrust is the predominant metric used to measure engine performance.
Maybe someone can help me understand how different approaches work in practice: From the pilots' perspective: Doesn't the A350 (or any modern Airbus) program the ILS into the navigation automatically based off information entered into the MCDU? So if the pilots required a precision approach, the gl...
Jump to postsxf24 wrote:At the end of the day, haggling over marketing data in the public domain is childish.
Wether it is fully true is a completely different question but again marketing. Two wrongs don’t make a right, what else have they taken liberties with because we should have known better ? Especially when people are taking the words written as being actual engineering comparisons. GE don’t have an...
Jump to postYou can't adjust for thrust when thrust is already accounted for in the unit itself: g/kN.h = grams of fuel per kilonewton of thrust over an hour (lb/lbf.h in 'muricanese). The units for SFC are kg/kW.hr, the units for TSFC are kg/kN.h. Everyone in industry know that they should have written TSFC, ...
Jump to postDo you have ACAP data for the 779? I would love to see the comparison. Well that is a very good question, where is the ACAPS for the 779, why is it we have not been able to see it yet ? The aircraft was supposed to enter service years ago. What does Boeing have to hide ? Wonder why airlines don’t u...
Jump to postZeke, please read the link from GE before commenting. You keep mis-stating the facts. It could not be more clear. GE states the GE9X has a 10% better SFC than the GE90- 115 and 5% better than the competing twins. I understand you don't like those facts. If you have a credible link disputing those f...
Jump to postIt all boils down to the same conclusion every time: the 777-9 seems to be slightly more efficient per seat, but only of the Airline is able to sell those extra seats over the A350-1000 (plus maybe the extra cargo space). The 779 runs out of payload capacity, if they make it a premium heavy cabin, ...
Jump to postswapcv wrote:Is that A35K MZFW right? IIRC, A35K is still at 223t MZFW.
In a two class configuration the A351 typically seats 369 pax. That would be 54J and 315 Y. BA for instance seats 331, but theirs is a more premium heavy configuration. The 779 seats 414-426 in a two class configuration. That would be 42J and 372 to 384 Y. Despite the back and forth which is fun, t...
Jump to postFalse. That is direct from GE. Please read exactly what GE stated. https://www.geaerospace.com/propulsion/commercial/ge9x Quote: PROVIDES A 5% SPECIFIC FUEL CONSUMPTION IMPROVEMENT VERSUS ANY TWIN-AISLE ENGINE AVAILABLE If the GE9X has a 5% better SFC than the GE90-115, it is a real disappointment....
Jump to postI finally found the quote: "For the longer 777-9, new engines should improve fuel consumption by 10%, with the longer, carbon-fiber wings adding an estimated 7% improvement. As 4 to 5% of fuel savings is lost from the 12 tons heavier basic structure of the larger airliner, the net fuel efficie...
Jump to postQuite famously Airbus predicted a market for 1200-1700 VLAs. Of course they were very wrong with this prediction but how did they come up with that figure? Well the predicted that market share for aircraft with more than 400 seats or lifting more than 70 tonnes of cargo. Boring had very similar fig...
Jump to postThe 787 does not have a common rating with the 777, not in the US at least and almost certainly not in the ROC. Its even possible the ROC CAA will not allow a common 77X/ 777 rating. They didn't allow a common A330 and A340. Yes FAA considers them all separate types ratings. EASA considers the 787/...
Jump to postSeams to me that these CASM comparisons only consider the best case ( high density version of the a350) scenario and don't take into account the fact that most airlines haven't chosen this kind of configuration yet if ever. These improvements by Airbus in my view have little to do with trying to fi...
Jump to postSermons wrote:But hey , at the end of the day who really cares what's fake or not.
Boeing says the 779 has a 20% lower CASM versus a 365 seat 77W. If true, and I don't see any reason to doubt them, that would make the 779 very competitive with the A351 if you can use the extra capacity. Also, the GE9X is newer and more efficient tech than existing RR or GE engines on the 787 or A...
Jump to post[twoid][/twoid] Wait. I thought there was a pilot shortage? What happened to all those people who were retiring? Large freight operators have been telling the stock market of predictions of reduced revenue and profits. This is partially due to more belly space becoming available on passenger aircraf...
Jump to postSo the additional seats are all coming from the width difference, and the fact the 777-9 is a true 10-abreast machine, while the A35K isn't. The airlines that plan on operating both those aircraft clearly prove that point. No one is operating a 777-9, it is not certified. If the “the 777-9 is a tru...
Jump to postDumb question, with this latest bump up in MTOW for the A35K, how would this impact the performance on an ULH hot and high route such as JNB-ATL as the A35K to DL is still not officially dead, with the price being the main sticking point for DL? I recognize the main issue DL has with takeoffs at JN...
Jump to postHi all, So the other day I was at my local airfield. Most of the aircraft that are there are small GA aircraft. I notice that many of them parked on the ramp have chocks made from aluminium like this: https://transair.co.uk/aircraft-and-airfield/airfield-equipment/aircraft-chocks/red-aluminium-choc...
Jump to postMetal slides easily across concrete, never seen anything but wood or rubber chocks on large aircraft Normally always I see a metal truss chock used for pushback, they place in front of the nose wheel when disconnecting the tow bar. After the mechanics are released the walk away with this. The tubul...
Jump to postWow, a 747F can carry about 2 tonnes more payload with two more engines of wich weight and fuel burn??? With the new production standard reduction in OEW across the board as well as this increased MTOW the actual difference is negligible. And as far as I am aware they A350F would take maximum paylo...
Jump to postIf it doesn't need 10-abreast to be competitive why is Airbus doing it? This is flame bait, the same reason why boing did 9 across on the 787, and 10 across on the 777. The A350F has also morphed into an aircraft that takes the same volume and payload as the 744F. They are simply making small incre...
Jump to postmeh130 wrote:The A350, even with its new wider cabin, is the same width as the MD-11.
Absolutely right. Let’s not forget, FedEx flights (Including Trans Atlantic) utilize MST. Flight crews with US Passports and metal with US registered N- numbers. I’m sure starting service to secondary cities is possible at the right price.[/quote For cargo ops that is possible, passenger flights a ...
Jump to postI think 17” seats were common with some 777 and 747 operators.
Jump to postThe problem is that most Male shoulder widths are at least 40cm, and as I noted in the CX 77W I travelled in recently, I was literally rubbing shoulders. I think the 787/777 are most likely the maximum you can get away with on full service airlines. My understanding is with the new production stand...
Jump to postpar13del wrote:My question is who are the 7 US flagged, does that mean a carrier like the big 3 - UA, AA, DL - if so, who are the other 4, Jetblue is 5, so I am missing 2.
Most bi-laterals do require equal access to ports though. One country can’t force foreign airlines to use a less convenient airport while letting the hometown airline use the more convenient airport for international use for example. Ease of ability to get slots sometimes becomes a sticking point. ...
Jump to postAnd virtually every aircraft is over-engineered in some manner or the other. If the margins weren't there, then the product would stay the same throughout its life without major improvements. To make my point clear, without over-engineering, the A359 wouldn't have seen its MTOW go from 268 tonnes t...
Jump to postI also doubt there's many Americans who have heard of EIN, MST or RTM, even if you sell tickets as say Amsterdam-Rotterdam, and probably wouldn't prefer being dumped off over an hour away from Amsterdam on transit. Screening aside, AMS is the money airport... My point related to bi-laterals are bet...
Jump to postChipmunk1973 wrote:But is this new weight variant (WV) specifically tied to the QF Project Sunrise (PS) configuration?
Do we know if there will be a thrust increase to go with the increased MTOW?. I remember when the original 359 came in 3T overweight, RR increased thrust by 1T to maintain performance. Also does the XWB -97 have the same problem as the XWB -84 with intermediate turbine blade cracking, and has RR co...
Jump to postI'm not talking about the total payload, I'm talking about the rated belly hold capacity. You can consult your Airlines' Weight and Balance documents for the belly freight capacities. I for one cannot see how an A350 can take 70 tonnes in its holds when the regulatory load shows a maximum of 45 ton...
Jump to postIncorrect, passenger flights to the US are considered "high risk" and as such commercial passenger flights to the US can only depart from AMS as "high risk" flights are not allowed from EIN, MST or RTM. The nearby options are BRU and DUS. Can you please supply a reference to thi...
Jump to postDutch authorities should consider the consequences if they restrict B6, that other governments can retaliate by restricting KLM and they should. Ultimately Dutch and KLM would be the loser. It does not matter if it is tiny or not, they cannot restrict an airline of one country and not expect retali...
Jump to postBaconButty wrote:There’s potentially a whole lot more goodness they could benefit from that the NPS program brings, due to be phased in by 2024.
While the ULD count is the same, the A35K trails the B773/B77W in terms of absolute weight limit, with the former being able to load only as much as 52.5 tonnes compared to 76.7 tonnes for the latter. This is not true. The 77W carries around 5-10 tonnes less than the A350-1000 when both are loaded ...
Jump to postEY and QR both fly the A35K in the same climate. Plus all the other airlines that operate the aircraft into that environment. I thought RX is also ordering A350s ? The extra weight and lower OEW (new production standard) means more payload, more range with maximum payload. This will be beneficial t...
Jump to postThe astounding incompetence of TSA continues to astound. What are the screeners doing if they can't stop the most basic, most obvious hazards? The blame is with the passenger, not the screening agents. He would probably be charged with something like not having a licence to import or deal with such...
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