Hey does anyone know of some kind of website that can help you calculate the speeds for an approach just like the CDU or FMC would do ? If you notice not all aircraft has a CDU or FMC i which it did. Because i like this freeware 737 but it doesn't has a CDU since its default . So during a flight i need to calculate the weight that i have for the approach but since am running fs passenger i can't access the fual and payload section FS passenger will just cancel. So i was wondering is there any website that can help you calculate an approach speed with the current weight you are flying ?

Hey does anyone know of some kind of website that can help you calculate the speeds for an approach just like the CDU or FMC would do ? If you notice not all aircraft has a CDU or FMC i which it did. Because i like this freeware 737 but it doesn't has a CDU since its default . So during a flight i need to calculate the weight that i have for the approach but since am running fs passenger i can't access the fual and payload section FS passenger will just cancel. So i was wondering is there any website that can help you calculate an approach speed with the current weight you are flying ?

The approach weights (Vref) would very much depend on the individual FSX model you're flying. You'll have to crunch a few numbers, and they'll be useless anyway with a freeware model.http://www.b737.org.uk/vspeedcalc2.htm

Edited February 17, 201214 yr by ZachLW

http://www.np3a.com/home/drcalc.phpThis just calculates descent rate/distance/etc. Sorry no weights...

Edited February 17, 201214 yr by dighost

http://www.np3a.com/home/drcalc.php

That's a decent rate calculator. It doesn't calculate Vref like the OP wants.

thanks anyway guys i have herd of something call tOPCAT . Have anyone try it before ? here is link http://www.topcatsim.com

thanks anyway guys i have herd of something call tOPCAT . Have anyone try it before ?here is link http://www.topcatsim.com

I use it for the NGX and the Level-D 767. It's great.Again, I'm not sure how the calculated Vrefs will work out with a freeware 737, and takeoff data will be useless. I recommend getting a high-fidelity add on like the NGX before pulling the trigger on a very involved, precision program. It won't do much for your freeware aircraft.

Just use 145kts as Vref, you will be fine

Thanks by the way i added you on facebook . Thanks for your recommendation .

You can actually figure Vref pretty well for most any aircraft simply by setting landing flaps and in level flight slowing until you need a 10º nose-up attitude to maintain altitude. That's your Vref.You can do this a few miles before capturing the glideslope and you will not be inconvenienced by this maneuver.Cheers,- jahman.

Maybe this could help:http://www.b737.org.uk/vspeeds.htm#Landing_V_Refs_There is much more available on the Pilot's Notes page of this website.

Edited February 17, 201214 yr by Tube and Rag

Maybe this could help:http://www.b737.org....Landing_V_Refs_There is much more available on the Pilot's Notes page of this website.

If you noticed, I linked that site directly to the Vref calculations page. Very neat site.

Thankx everyone for your help :( :(