Ok so I don't know how often that it happens where I'm going schedule a international flight going east and the flight coming back takes off at around 23:00 local and the flight is exactly 5 local hours with time change. That means I can't schedule this flight because even if I delay the take off to 23:55, it still gets there at 4:55. If I postpone it 5 minutes more it takes off at midnight, which is apparently very bad. I find this kind of stupid, what kind of huge difference is there in the 5 minutes between 23:55-0 and 4:55-5 that pax decreases so severely? And if that can't be changed, can I slow down my flight to 5 hours and 1 second so it meets the mystical pax hours?
You could fly a slower plane type or schedule an outbound fuel stop
Being able to order the plane to fly a bit slower (ECON speed) would solve this problem...
make a new feature request. ;)
Hi,
Just for fun and for information :)
I know it happens in real with an AF flight leaving from NRT to CDG which took off just before the curfew at NRT and is the first to arrive at CDG early in the morning. Usually before 4 am :P (there is no curfew at CDG but before 4am is really early for the pax and the staff for a regular flight). I heard that the crew had to fly slower...
On many a/c FMGCs the pilot sets an econ setting.
Quote from: romeozulu on January 23, 2011, 10:10:28 PM
Hi,
Just for fun and for information :)
I know it happens in real with an AF flight leaving from NRT to CDG which took off just before the curfew at NRT and is the first to arrive at CDG early in the morning. Usually before 4 am :P (there is no curfew at CDG but before 4am is really early for the pax and the staff for a regular flight). I heard that the crew had to fly slower...
I remember this flight when I used to work Area. AF273 RJAA-LFPG flew through Norwegian airspace around 3:30am in the morning. Whenever we offered a direct routing to shorten the flight, the pilots always politely declined and requested to continue flight plan route at a lower speed. I once asked why, and the reply was "to avoid paying extra landing fees at Charles de Gaulle due to nighttime arrival". Probably cheaper to fly the 747-400 1 hour extra than paying elevated landing fees... :)
Probably cheaper to fly 1 hour longer? I bet so. It has a big difference in fuel consuption when flying 0.76 mach instead of 0.80...
The A380 is more fuel efficient flying at M.85 than M.83
Quote from: alexgv1 on January 24, 2011, 01:55:45 PM
The A380 is more fuel efficient flying at M.85 than M.83
Does it start making it's own fuel at m.85? :P
Quote from: Frogiton on January 24, 2011, 02:18:26 PM
Does it start making it's own fuel at m.85? :P
No it just has higher thrust specific fuel consumption at that speed 8)
Hi
I don't notice a high difference in LF between 2355 and 0000. Hoewever, there IS a huge difference between 0000 and 0005... (which is also a result of computer-based calculations...)
Best thing to do so far is to plan a technical stopover for refuelling...
Another way (I use it on some planes, but not really cost-efficient), is to make a lading at destination by 2355 or 0000, and take off for return trip at 0500. Still works pretty well.
Good luck !