VS at higher ALT

#1

Hi, I’m new to IF and read a lot of Posts, Profiles and Fuel Burn Charts. But I dont know what VS I should use when I’m climbing at higher altitudes. Is everything under 1000 ft/min good? For example climbing from FL300 to FL330.

Thank you if you can help!

Can :D

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#2

Here’s my personal reference guide I use to climb.

0-10k:
VS 1500-2500

10k-28k:
VS 1800-1200

FL280-FL350:
VS 1200-900

< FL350:
VS 1000-500

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#3

Thank you very much! I appreciate the answer :)

#4

Personally, I pitch for speed. I will set my throttle to 10% below takeoff power and my VS will be whatever number allows me to maintain the speed that I want.

As my altitude increases, my VS will decrease I order to maintain the speed I want. This also seems like a more efficient way of using fuel as your always using the same amount of throttle, only moving it slightly if needed

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#5

Im usually using 777, VS in 2500 at takeoff, after reaching FL100 down to 2000 and after FL280 down to 1800

#6

Thank you Drummer, I use this method too as the IF YouTube Channel suggested in their “How to fly…” But do you still fly manual in higher altitudes like FL300?

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#7

Thank you for the numbers!

#8

He doesn’t mean flying completely manual - flying on autopilot (except for speed) and continuously changing V/S to maintain speed and N1

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#9

Ohh… I understood. Thanks Benny

#10

On most occasions, I set autopilot in stages with HDG/LNAV coming on first. This will happen once I’m established on my SID.

After passing 10000, I turn on ALT and VS mode. I manually will change to VS to keep speed.

After reaching cruise that’s when SPD mode turns on. This keeps the climb fun

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#11

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