Bihrle Applied Research Inc. (BAR) is an aeronautical research & development company specializing in the development of flight-representative software math models for commercial and military fixed-wing and rotary-wing aircraft, including full-envelope modeling and aircraft upset recovery modeling. BAR successfully incorporates such flight models into a wide range of customer applications, including engineering workstations, Full Flight Simulators, hardware-in-the-loop simulators and multi-vehicle networked simulations. BAR has successfully demonstrated technical solutions to address the challenges associated with integrating stall and post-stall models into both new and existing simulators. BAR also offers commercial software tools in support of flight simulation development, deployment, qualification, and re-qualification.