SurClaro Flight Simulator Resources

Posted: Wed Mar 22, 2006 2:00 am Post subject: average climb rate?

i was wondering what an average climb rate for a boeing 777 is and for any other jet i might add ( in feet per minute) because i was flying southwest and i noticed we got up to 10000 pretty quick after departure so i was wondering what u guys fly as a vertical speed while climbing.

Posted: Wed Mar 22, 2006 3:11 am Post subject:

well, i fly 1500-2000 VS

Posted: Wed Mar 22, 2006 10:19 am Post subject:

I believe climb rate is not directly selected using vertical speed. After you rotate and gear up, you set engines to climbout power and select the appropriate nose up attitude to achieve recommended climbout speed.

Posted: Wed Mar 22, 2006 11:36 am Post subject:

I beleive that from 0-10,000ft climb rate is normally 2500. Then from 10,000 -> 18,000 it is 2000. 18,000 to cruise height 1300 - 500 depending on power and speed.

Captain El

Posted: Wed Mar 22, 2006 3:17 pm Post subject:

Incorrect, incorrect and incorrect!

First of all, there is no standard climb rate. After takeoff power has been applied, the airplane will rotate at a certain speed and continue the initial climbout at takeoff power reaching speed V2+10, then pitching up to maintain that particular speed with takeoff power still applied. After climbing through 400 feet above ground, that speed will be reduced to Climb (or Climb derate thrust according to noise abatement proc) and the airplane will, obviously continue at a slower rate of climb, because less thrust is provided by the engines. Speed is usually 250 knots below 10.000 feet, however that is bypassed by the heavy freight 747's whose clean maneuvering speed is more then that (~270 knots).

It goes the same for a descent. The Top Of Descent (or the TOD point) will be calculated so that the airplane will have an un-interupted descent all the way down, and furthermore, with engines safely throttled down to flight idle. That way, maximum fuel economy is acheived. The airplane is most economic (miles travelled per 1000 lbs of fuel for example) in a straight and level cruise at it's optimum altitude for the given gross weight. And the airplane is best to be kept at that for as long as possible. Furthermore, descending with IDLE thrust is also fuel saving. As a conclusion, the descent rate is primairly calculated so the airplane maintains the commanded speed with engines at flight idle.

Posted: Tue Sep 12, 2006 2:05 pm Post subject: Climb rate

Climb rate is good around 1800fpm thats when you get the best fuel efficiency too. You can have a look at the amount of fuel being burned having different climb rates.

I on full load sometimes accelerate around 245 knots KIAS and then keep the climb rate at around 2000fpm to 2200 fpm max. Too high climb rate and stall is imminent at whatever speed you try to take it up, the plane will eventually run out of power and start reducing speed drastically and then taking you into an uncontrolled descent.

Posted: Tue Sep 12, 2006 4:36 pm Post subject:

As usual, MAX is right on. The answer to the original question should be answered in speed rather than feet per minute.

I am so glad that we have people like MAX who can set us straight. Cool

Posted: Tue Sep 12, 2006 5:32 pm Post subject: Re: Climb rate

Posted: Mon Sep 25, 2006 8:23 am Post subject: Thanks Max

Thanks Max for correcting me on the fuel efficiency. Your answer is correct. Its speed thats important, not directly the climb rate for efficiency.

Posted: Wed Jul 18, 2007 12:25 am Post subject:

your fpm depends on your aircrafts power to weight ratio,stall speed,and amount of flaps a cessna will climbout at about 1500fpm aleast i do on a 747 I will do about 1800

Posted: Wed Jul 18, 2007 12:30 am Post subject:

Posted: Wed Jul 18, 2007 4:38 pm Post subject:

you worry too much guys.. on a 777 you can just turn the autopilot on, set altitude according to the flight, the vertical speed between 1500 and 2000 depending on your patience, speed 250 and voila! the plane will do what's needed.. they're pretty smart actually... sit back and take a snooze.

Posted: Wed Jul 18, 2007 6:17 pm Post subject:

Well, to some people it seems that we're worrying too much, looking at V1 speeds, rotation speeds, or doing things that don't make any difference at all in FS2004. To some, it seems the people who do those things are just making it complicated.

Sure, you can set your altitude and set a VS and A/T and let the A/P do its thing, but some people ask, "Where's the fun in that?". Where's the fun in setting the autopilot with a couple clicks and "sitting back and taking a snooze"? They strive to be as realistic as possible, even if flight sim gives them an easier way out.

Personally, I believe that that's the way those people like to fly, and they enjoy it that way.