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Trhust vs altitude

L

lh777

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126
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italy
Increasing height of the trhust decreases too.
How can I fix it? I tried to decrease the values in the table in 1507 but nothing!
 
Last edited:
It is normal for thrust to decrease with increase in altitude. Thrust is approximately proportional to density ratio.
However all the stock jets and many others have too great a decrease because they do not have the right values in the airfile Turbine Tables 1502 through 1507.
How the tables should be constructed is given in a paper called FS Thrust versus Altitude which can be found on page 6 of "Resources". The link to Resources is at the top of this page.
EDIT or you can use the link Heretic provided
Roy
 
In the table 1502 in revenue CN1 CN2 function.
The CN1 I need in 1506 to find the thrust
From 1503 to 1504 I have the CN2 according to the IAP.
When IAP increases CN2 increases; then decreases the thrust.
To decrease the decrease of the thrust with increasing height must bring the values of CN2 between IAP1 = 1 and IAP> 1?
 
set up your sea level thrust at static and all mach. FS will accurately do the rest, although your thrust may not be properly aligned with fan speeds. Refer to Roy's document for setting up throttle and fan relationships.
 
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