Re: A tool for JSBsim Airfoil Modelling
Posted: Sat Jun 20, 2020 3:23 pm
Not too sure, really. Maybe it needs an initial value?
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Fuel Temperature:
Fuel temperature is calculated using the following assumptions:
Fuel temperature will only be calculated for tanks which have an initial fuel
temperature specified in the configuration file.
The surface area of the tank is estimated from the capacity in pounds. It
is assumed that the tank is a wing tank with dimensions h by 4h by 10h. The
volume of the tank is then 40(h)(h)(h). The area of the upper or lower
surface is then 40(h)(h). The volume is also equal to the capacity divided
by 49.368 lbs/cu-ft, for jet fuel. The surface area of one side can then be
derived from the tank's capacity.
The heat capacity of jet fuel is assumed to be 900 Joules/lbm/K, and the
heat transfer factor of the tank is 1.115 Watts/sq-ft/K.
Fuel temperature is currently not written to the property tree.
IAHM-COL wrote:
Would some of these differences raise an immediate flag for you, or is more like test on perfomance and see?
123apple wrote:I can assure you it is... I use that property.
Code: Select all
deltaQ/delta-t = -KA deltaT / delta distance
IAHM-COL wrote:were you able to execute the airfoil code?
bomber wrote:IAHM-COL wrote:Not at present, I'm trying to not get too distracted from what I'm doing right now..