Jump to content

Sign in to follow this  
Guest planeman223

Climb Speed?

Recommended Posts

Guest planeman223

On the climb page of my 737, the target climb speed is 293/.78 . These figures can vary greatly especially before 30k feet. So which on is it? Am I supposed to maintain 293 or .78? Also I have noticed with real world weather and those massive wind changes, it drives my VNAV wild rapidly pitching up or down to maintain airspeed, so I frequently find myself manually climbing the airplane to cruise alt. Anyone found ways to get around this??Thanks, Al

Share this post

Link to post

I use wind smoothing, it is available in registered version of FSUIPC. The 293/0.78 means you'll climb at 293 (above 10,000) until the mach number increases to 0.78 then it will hold constant mach. It's very realistic. The climb above FL380 can become sluggish, and a minor wind variation may flatten your climb. If this happens I usually manually enter a climb mach a couple of points lower (0.74-0.76 usually work better).

Dan Downs KCRP

Share this post

Link to post

Al,You keep 293 knots until your mach number reaches 0.78 (around FL300) after that you keep M0.78. Same thing but reversed when descending.With any other pitch mode than VNAV you will have to keep track of the cross over from airspeed to mach. In VNAV this will be handled automatically for you.If you are using the default FS weather I would suggest you disable winds aloft. Too many bugs in the upper winds behaviour that may end you flight if not careful. Another option is to look into Active Sky which has replaced the FS upper winds with in-house routines. Works very well.Hope it helps,

Mats Johansson
PMDG Flight Test Dept

| Asus Z270-A | Intel i5-7600K @ 4.8 GHz OC/H2O | nVidia Geforce GTX 1070 8GB OC/O2|

Share this post

Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
  • Tom Allensworth,
    Founder of AVSIM Online

  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.

    $565.00 of $25,000.00 Donate Now
  • Create New...