Good day, an intriguing curiosity led me to ask you this following question:
In cold climated geografic areas/seasons, by flying on A320 Neo or Boeing aircraft, as kow is the climate temperature, for also the safety of the working engines, mentioning that I fly always FL390, would i fly at lower cruise altitudes as the climate become colder or i could maintain the FL390?
You maintain FL390 but the real altitude will be lower. You won’t lose siginificant engine power when temperature change in those altitudes. Ok, well temperature changing in a normal way not as the previous bug months ago, where you got +10 in FL390 or so.
Why would you always fly at FL390? The flight level you fly at is generally guided by either favorable winds or in order to keep a smooth flight and escape turbulence. The temperature only really affects the ability of the engine output and gives you a higher envelope for your cruise speed, but it may not be the most efficient or effective.
Thanks for answering, then what is the better altitude to fly at in the average you would suggest me? The most plane i use is the A320 Neo.
Ah, before i forget, about the fuel consumption, at wich flight level i would usually consume less fuel?
There is no “better” altitude. It’s whatever provides the smoothest ride or greater operational efficiency. I’ve mirrored real world flights that climb and descend 4/5 times.
Hello,
The SDK category is for developers. I have moved your topic to Community Support.
It’s already written. There is no „better altitude“. Cruise altitude depends on load, weather, distance, ATC, range requirement, step climb because of restrictions and so on and so on. You won’t think about all that stuff which need to be calculated to get the best suitable altitude enroute. Look in the MCDU and take note of the Max recorded altitude and best altitude calculated by the FMS and take those.
1 Like
I recall that Concorde used to be able to cruise climb throughout its entire flight as the fuel burned off and it got lighter and therefore more advantageous for it to go higher, because it was the only thing operating up at its altitudes (other than maybe an occasional U2 or SR71). It didn’t have the ATC constraints that other transport aircraft do.
That said, I seem to recall seeing somewhere that aircraft crossing the isolated south pacific on non-stop flights from South America to Oceana are also given blocks of altitudes because there are very few of them down there to conflict with one another, so they can be a bit more flexible.
Sure the higher the less fuel consumed, however you use more fuel to get there. So there is a trade off. Also depending on loading it might not be safe or even possible. If you want realistic flight altitudes get familiar with SimBrief. It generates flight plans mostly based on real flights. Have fun.
As for the flight levels, There are specific flight levels for VFR & IFR flights at 1000ft spacing depending on flight direction.
Look up IFR & VFR flight levels on google. There is a multitude of charts showing the correct levels as explained above.
In the A320, fly the optimum flight level from the progress page in the MCDU. You’re generally best not to go all the way to max altitude unless it is very smooth as the margin between max speed and min speed is small.