What’s the best climb angle? (VS)

What VS should I be at for climbing?

Bonus: whats the best -VS for decent from 15K?

For climbing:

1800-2200 fpm

Descent:

-1400 - -1800fpm

The vs rate for descent does not matter, it matters when you descent

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Ok. Thanks

I usually go at 2500 FPM

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There is no set v/s you should be climbing or descending at, in real life the v/s varies during the climb and descent, and is often calculated by the FMC to provide the most economical climb.

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I usually climb at 2200 VS

With the 757, I think 8000 is more appropriate tho

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For the 757 I’d probably go a light 10000

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Descending at -10000 fpm every once in a while exercises those speed brakes.

just kidding

For real though, 2000 fpm is good for climb and 1500 is good for descent. Or, at least that what I do and it works out fine.

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Yo da 757 can climb like a beast!! Sorry to go off topic everyone😁

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It might be realistic but it feels to slow for me😒

There is not a single climb rate applicable for every model, with every load, at every altitude, etc. There are variables.

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Climb rate should reduce as you get higher.

I normally do this:

Initial climb. Up to 1,000 AGL. Speed varies between aircraft. Hold V2+10, whatever climb rate that takes. Once you hit your V2+10 speed, you should not increase speed!! This is why you always have a steep initial climb when flying IRL, and then you hear the engines spool down (the next step).

At 1,000 AGL, reduce power, flaps up, speed up to 250. As you speed up, hold your nose at about 8 degrees nose up pitch. This means as you speed up, you should be slowly adjusting your V/S (upwards) to keep it at an 8 degree bank angle. Once at 250 knots, set v/s to 2,500.

At 10,000 feet, keep throttle the same and reduce v/s to 2,200. This will require you to disengage autothrottle. This will give you a realistic speed up (due to IF turning on the afterburners when told to increase speed).

Once at FL180, reduce to 2,000 v/s.

Once you are 10,000 feet away from final cruise, reduce V/S to 1,800. Once you are 5,000 feet away, reduce v/s to 1,200.


Descending is a whole different story. I’ve spoken to pilots, and they say their rate of descent is based on speed. If you can’t hold your speed, you’re going too fast. I’d say anywhere between -1,500 to -3,000 v/s. Speaking with a bunch of pilots, this is around the average I hear. It also depends on a lot of factors (weight, STAR, aircraft, airport, speed, ETC).

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I climb at 15 degrees until I reach 5000ft AGL and then I climb at a vs of 2000-2400

That’s a bit much. Normally, 15 degrees isn’t achievable with normal takeoff power, normal weight, and holding the right speed.

Aircraft will end their initial climb at 1,000 AGL (In the US. Excluding noise abatement procedures).

Try climbing at about 13 degrees up to 1,000 like I wrote above!

Can’t just slap on VS on every aircraft and just go with it. Variables like your load can significantly impact your climb.

Absolutely. This climb profile for me is what I normally do. It works with almost all weights (up to 90% load).

Obviously if I’m doing a long haul in a 777 it is different. Pretty much though, lower each v/s by a certain, constant amount as your weight increases.

This was more for short and medium haul flights.

You are right though, it depends on a large amount of variables that should be taken into account.

Well looking back 5000 is a bit too much I just watched a takeoff irl again on YouTube and you go 15 degrees up until 2000 then to 10 degrees until like 4000 or 5000 that’s only for the first part of your ascent though

For me I do it in steps, straight after takeoff I go about 3000fpm, then about FL100 I’ll go to about 2500fpm, then at FL300+ I’ll go to about 1500fpm.

As for descent I start with about -3000fpm, then at about FL250 I’ll do about -2500fpm, at about 15000- I’ll do about -1600fpm.

However all of this varies on whenever you start your descent and the elevation of the airport.

But if your in the 757 you can just go ahead and go to like 10,000fpm without any problem 😂😂😂

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Departure-FL100 2600fpm
FL100-FL200 2200fpm
FL200-FL300 1900fpm
FL300-FL400 1500fpm
FL400+ 800fpm

Descent from FL150 depends on how close you’re to the approach path of destination. Assume 60nm from destination, go at 220kts @ -1800fpm

-3000 is not very conventional irl as many commercial airliners may not be designed to handle the down force the wings create at that alpha.