Simviation Forums

Hi guys, I been a while out of FS so I came back first trying the FS X but maybe I need a 10000 dollars computer, so I came back to FS2004 (the best one for me) and now im starting doing short flights in the B737-800 excellent jet, so my question is, I always use real weather to fly, and when im doing my flight plan im not sure what altitute to select, I know from 0 to 179 is even and 180 to 359 odd, but I mean is better 30000 or 26000 etc etc, I know maybe all depends on the weather but anyway after 20000 feets u dont have much changes, but I want to be as real as I can, anyone knows a calculation, software or website to get accurate altitudes please thanks, sorry for my english but im latino

I like to check with the real world manufacturer.

Link

Mach .785 at 35,000 feet.

I don't fly the jets often, but when I do, I like to keep fuel on board to a minimum, so a selected altitude is important.

All weather and wind being equal, and allowing 7 miles per 3000 feet on the descent (climbs are steeper); you'd need 70nm to get down from 30,000 feet (allowing for further descent in a pattern).

From that reference, not wanting a descent to be more than 1/4 of the flight; you'd need to be facing a 280nm flight MINIMUM for a 30,000msl cruise. Round that up to 300nm and that's a good reference point.

Looking at that ratio ( 300nm for 30,000msl ) you get 1:100

100nm = 10,000 cruise (prob why 737s don't take flights that short very often)

200nm = 20,000 cruise (I've been on a 737 that took that flight)

300nm = 30,000 cruise (seems reasonable)

and a 400nm minimum for 40,000 cruise (can they even fly that high ?)

Most any flight longer than 300nm would end up with a cruise altitude between 30,000 and 40,000.

The higher the better for fuel economy, but obviously climbing up to 30,000 and then having to descend immediately isn't very efficient..lol

hey thanks very much i think thats a good explination thanks a lot

No es necesario escribir los t

Hi there......and your English is OK!!