Aircraft Dynamics Models for Use with FlightGear Modeling and Simulation

Maintained by Michael S. Selig, Rob Deters, and Glen Dimock
UIUC Applied Aerodynamics Group Last update 3/10/02 Changes 
Welcome to the Aircraft Dynamics Models web page. The purpose of this page is to provide a compilation of aircraft dynamics models that are sufficiently complete for use in aircraft flight simulators. The data file format is specific to the free opensource FlightGear flight simulator (FGFS), which includes the UIUC aerodynamicsmodel code initially developed for the Smart Icing System Project at the University of Illinois at UrbanaChampaign. Although the UIUC code has the unique features of modeling aircraft aerodynamics in icing conditions, it can also be used to model aircraft under clean (noniced) conditions. New aircraft dynamics models will be added as they become available. Contributors interested in developing new models for inclusion here are encouraged to contact us. These models can be easily converted to other formats, such as JSBSim which is the default dynamics model in Flightgear.
Aircraft that can be currently flown with the UIUC aero model of FlightGear include the following
It should be emphasized that these models are approximations to their namesake, hence they are by no means complete. For instance, many of these aircraft have automatic flight control systems that are not modeled. Moreover, in many cases reasonable parameter estimates must be made because some data is unavailable and/or impractical to obtain. Finally, if all the desired data were available, computers are not yet fast enough to model all of the physics. Users desiring that level of sohpistcation will do better buying the real McCoy. However, having said that, in several cases the aerodynamics are modeled in considerable detail and include table lookups to model a number of nonlinear aerodynamic behaviors (e.g. stall and loss of control) that depend on angle of attack, side slip, and control inputs among other parameters. In the data files, some references are given to the sources used in generating the data. Following the aircraft table, a number of notes are given regarding the aircraft model data and the specific use of these files in FlightGear. This data is released under the GNU GPL.







beech99v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

boeing747v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

cessna172v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 
cessna17271v2 (3/6/02)  0.7.8+ 
nonlinear model / includes stall curve Cessna 172 as used in fgfs 0.7.1 
Scott / Selig  Roskam, Tony Peden (FGFS developer)  
cessna17273v3 (3/6/02)  0.7.8+ 
nonlinear model / includes stall curve Cessna 172 as used in fgfs 0.7.3 
Scott / Selig  Roskam, Tony Peden (FGFS developer)  
cessna172aae319v4 (3/6/02)  0.7.8+ 
nonlinear model / uses CL, CD, and Cm curves Cessna 172 used UIUC AAE 319 course 
Scott / Selig  Roskam, Ken R. Sivier (UIUC)  

cessna310v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

cessna620v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

t37v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

convair880v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Selig  Roskam 

f104starfighterv1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

f4phantomv1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Selig  Roskam 

learjet24v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Selig  Roskam 
S211 
marchettiv1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Selig  Roskam 
Cherokee 
piperCherokeev1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Roskam 

pioneerUAVv1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Bray 
pioneerUAVnlv2 (3/6/02)  0.7.8+  nonlinear model / includes 10 lookup tables  Scott / Selig  Bray  

sgs136spritenlv1/ (3/6/02)  0.7.8+  nonlinear model / includes CL, CD and CM curves  Selig  Sim 

twinOtternlv1 (3/6/02)  0.7.8+  nonlinear model / includes CL and CD curves  Scott / Selig  Bragg, et al. 
Wright Flyer 
wrightFlyer1903nlv1 (3/9/02)  0.7.8+  nonlinear model / includes CL, CD and Cm curves  Selig  Culick and Jex, Jex, et al. Selig (airfoil data) 

x15v1 (3/6/02)  0.7.8+  linear model / constant stability derivatives  Scott / Selig  Jon Berndt (early JSBSim model) 