The aircraft in Flight Gear using the Cessna 172 flight model. It works, and much more development needed.
openflight wrote in Wed Jul 31, 2019 11:29 am:Is the site accessible?
openflight wrote in Wed Jul 31, 2019 11:29 am:For information on modifying an existing aircraft see my site : https://sites.google.com/site/flightgea ... g-aircraft .
403. That’s an error.
Your client does not have permission to get URL /r0BjMWSWa7Yk4vhN1j8FcSkK8gP_904PoDLxzox0_lrTH7C5iyYCgbEVv9AT6cIt8E928X50v_f7lXcDmO-ZI_wEVJ4fYUSRqhcSS0txE4E7HHikPg=w974 from this server.
https://lh4.googleusercontent.com/Y1JEzZJfx45UiYXReT2OTZ6mzYVh-HtOGRSj7v0_day3UTaNndPRX1HAHRdCvTidI2eHOb7oqK76uwHbke4obowvCgOxpah2ZsQqD-xy7ISXAGqh0os=w1175
rdclzn wrote in Wed Jun 09, 2021 2:38 am:[...] mostly because of me having no idea where to learn the needed steps.
<?xml version="1.0"?>
<PropertyList>
<sim>
<model>
<path>Aircraft/My-aircraft/Models/My-aircraft.xml</path>
</model>
</sim>
</PropertyList>
rdclzn wrote in Wed Jun 09, 2021 2:38 am:From my understanding JSBSim is quite flexible, and I could write a linear aerodynamic model for it.
4th Degree Polynomial Fit: y=a+bx+cx^2+dx^3+ex^4.
Coefficient Data:
a = 0.0286299075
b = 0.0010349516
c = 0.0003691740
d = -0.0000004813
e = -0.0000000104
<function name="aero/c/CFXB">
<description>BASE DRAG</description>
<sum>
<value>0.0286299075</value>
<product>
<value>0.0010349516</value>
<property>aero/alpha-deg</property>
</product>
<product>
<value>0.0003691740</value>
<pow>
<property>aero/alpha-deg</property>
<value>2</value>
</pow>
</product>
<product>
<value>-0.0000004813</value>
<pow>
<property>aero/alpha-deg</property>
<value>3</value>
</pow>
</product>
<product>
<value>-0.0000000104</value>
<pow>
<property>aero/alpha-deg</property>
<value>4</value>
</pow>
</product>
</sum>
</function>
<axis name="DRAG">
<function name="aero/coefficients/CDRAG">
<sum>
<property>aero/c/CFXB</property>
<property>aero/c/CFXDAD</property>
<property>aero/c/CFXDADMN</property>
<property>aero/c/CFXDGE</property>
<property>aero/c/CFXDRD</property>
<property>aero/c/CFXDRDMN</property>
<property>aero/c/CFXFLAPS</property>
<property>aero/c/CFXGEAR</property>
<property>aero/c/CFXMN</property>
</sum>
</function>
<function name="aero/force/DRAG">
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<property>aero/coefficients/CDRAG</property>
</product>
</function>
</axis>
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