I just wanted to make this post to mention, or remind people, that the V/S (vertical speed), is mot the important thing for a steady climb, descent.
During climb and descent, in most cases, pitch for airspeed, power for altitude, sort of. Even in an airliner, it’s just a big Cessna.
So, during climb, try to maintain a certain airspeed and thrust setting, and change the vertical speed continuously to maintain that IAS and thrust setting. Usually during the climb 80% to 90% N1, not throttle, N1, is good. Whatever V/S that gives you, use that, but still keep changing it for different winds and air densities as you climb.
Oh, and here is a tutorial that Tyler made using this method.
And, now the descent.
Firstly, just to make 1 thing clear, this method typically I found only works if you use the 3x1 rule, which you can probably find a tutorial on somewhere. Let’s say I am at FL330, forgetting winds and weight, I will start my descent 99NM out. Oh, and by the way, that is 99 track nautical miles, not direct.
The first thing to do, is to reduce the thrust to 0% throttle. You do this because what you want to do is to perform a near idle “CDA” which is a continuous descent approach. This helps to burn less fuel, which of course lowers the chance of a low fuel scenario, lowers the amount of CO2 in the virtual environment, and, lowers the amount that the operator has to pay in virtual fuel.
Basically, the concept is is that you don’t let that throttle get to high until you are established on the glideslope. So, the same thing as before in the climb, pitch, or change the V/S, to maintain IAS and 0% throttle. I asked a 737 captain IRL, and he said that a descent of up to -5500FPM would be considered routine. Of course, that does vary on aircraft type.
As you pass through FL280, FL200, and 10,000ft, be warned, in IF, the air density increases very quickly and suddenly. This means you need to raise the nose, or raise the V/S, to continue to maintain your IAS. Of course, before going below 10,000 you need to slow down. So, keep the V/S closer to 0FPM, while slowing down. If ATC have already instructed you to descend below 10,00, if possible, atleast try to descend at atleast -500FPM. If you can’t because you need to slow down though, you can’t. Typically though, you should be able to, although it might require speedbrakes.
That brings me on to my next point, speedbrakes. Use these at minimal. Don’t use them for the sake of it. Only use them if you are too high/fast, or if you want to keep descending and still reduce IAS at a high rate of descent for whatever reason.
Now, obviously, you still need to intercept the glideslope from below. There fore, you will need to level of. But from that point, you don’t want your throttle at 0%. If it is at 0%, that is a clear sign you are unstabe. So, Go around!
I hope this makes sense. Do feel free to ask questions!
Was this helpful and did you understand? If so, rate it on a scale of 1-10, 10 being great. Thanks