Hi, 

Searching for a bit of help again 🙂

So I get it for the top of descent calculation but still missing something for the climb rate 

For example, 

Simbrief told me that I should be a TOC (39000ft) around 156nm from start, I think simbrief use climb profile with FLC but how can I calculate the climb rate if I want to use VS ? 

I know it's a dumb question but none of my calculation are right 🙂

Thanks 

24 minutes ago, dyl55 said:

Hi, 

Searching for a bit of help again 🙂

So I get it for the top of descent calculation but still missing something for the climb rate 

For example, 

Simbrief told me that I should be a TOC (39000ft) around 156nm from start, I think simbrief use climb profile with FLC but how can I calculate the climb rate if I want to use VS ? 

I know it's a dumb question but none of my calculation are right 🙂

Thanks 

There is no optimal VS during the whole climb since vertical rate is Speed on pitch-based (IAS / mach). That means you trim for a given speed that has been deemed optimal and that speed + thrust will give you a certain dynamic VS during your climb to cruise alt.

if you climb on a fixed VS you are sacrificing performance one way or the other (most likely initial climb with engines cut back and at later stages at speeds around VX)

I'm not saying it can't be calculated but you are making it awfully difficult for yourself in order to achieve a result that in the real world is not serving much purpose.

OK so that mean the better way should be the use of the FLC button (like I use to do with TBM) and follow the simbrief climb speed profile ? 

I use to fly the cessna longitude and the speed given by simbrief seems to be different that the one we can use in the sim (faster in SB), i use the c700 longitude profile In SB which I am not sure is the right one