>> we believe it is intentional.
>>
>> "the final increase in slipstream velocity (over the free stream velocity)
>> is 2* the increase in velocity at the actuator disk. Which is consistent
>> with the c172p FDM "
>>
>> -Stuart
>
> Yes, its added twice to avoid the multiplication.
>
> Ron
Ah, yes, found it in McCormick's Chapter six. Should we add some comment in
c172p.xml
as a reference for future generations? The computation is not very intuitive at
first sight (at least for me).
diff --git a/Aircraft/c172p/c172p.xml b/Aircraft/c172p/c172p.xml
index b28511e..933ea11 100644
--- a/Aircraft/c172p/c172p.xml
+++ b/Aircraft/c172p/c172p.xml
@@ -451,6 +451,9 @@
</product>
</function>
+ <!-- the final increase in slipstream velocity (over the free stream
velocity)
+ is 2 times the increase in velocity at the actuator disk.
+ McCormick, Aerodynamics, Aeronautics, and Flight Mechanics (6.9)
-->
<function name="aero/function/velocity-induced-fps">
<description> velocity including the propulsion induced
velocity.</description>
Torsten
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