TAT to SAT Conversion
05-21-2014, 08:18 AM
#1
18 Day Gear Monkey
Thread Starter
Joined APC: Jun 2008
Position: Phenom Gear Jockey
Posts: 171
TAT to SAT Conversion
I briefly looked around this forum on the subject, but I failed to find anything. I am currently working on some performance charts for the 135 outfit I fly Citations for and I am having a difficult time finding any easy to use formula for converting TAT to SAT for climb performance. I've spent a few hours searching for it using various media, but have been at a loss. Any input will help, a simple chart or anything would be of great use.
05-21-2014, 09:47 AM
#2
Gets Weekends Off
Joined APC: May 2011
Position: 737 CA
Posts: 949
Calculating ram rise? [Archive] - PPRuNe Forums
Some good info there, such as:
Some good info there, such as:
Another rule of thumb that we used was
TAT= SAT + (TAS/100)^2.
It works pretty well for approximation.
True enough, an approximation. If you want the exact figure with Knots TAS as the entry variable -
TAT= SAT + (TAS/87.1)^2, which is exact
k:
Or, if your entry variable is Mach Number -
TAT= SAT + (1+.2*M^2), which is also exactk:
Prop operators may prefer the former, jet jockeys the latter.
TAT= SAT + (TAS/100)^2.
It works pretty well for approximation.
True enough, an approximation. If you want the exact figure with Knots TAS as the entry variable -
TAT= SAT + (TAS/87.1)^2, which is exact
k:Or, if your entry variable is Mach Number -
TAT= SAT + (1+.2*M^2), which is also exact
k:Prop operators may prefer the former, jet jockeys the latter.
Thread
Thread Starter
Forum
Replies
Last Post
