tailieunhanh - Automatic Flight Control Systems Latest Developments Part 15

Tham khảo tài liệu 'automatic flight control systems latest developments part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Tool-Based Design and Evaluation of Resilient Flight Control Systems 201 Current flight simulators however are considered inadequate for the simulation of many upset conditions as the aerodynamic models are only applicable to the normal flight envelope. Upset conditions can take the aircraft outside the normal envelope where aircraft behaviour may change significantly and the pilot may have to adopt unconventional control strategies Burks 2009 . Furthermore standard hexapod-based motion systems are unable to reproduce the high accelerations angular rates and sustained G-forces occurring during upsets and the recovery from adverse conditions. The European Seventh Framework Program Simulation of Upset Recovery in Aviation SUPRA 2009-2012 aims to improve the aerodynamic and the motion envelope of groundbased flight simulators required for conducting advanced upset recovery simulation. The research not only involves hexapod-type flight simulators but also experimental centrifugebased simulators Figure 16 . The aerodynamic modeling within the SUPRA project employs a unique combination of engineering methods including the application of validated CFD methods and innovative physical modeling to capture the major aerodynamic effects that occur at high angles of attack. The flight simulator motion cueing research within SUPRA aims to extend the envelope of standard FFSs by optimizing the motion cueing software. In addition the effectiveness of the application of a new-generation centrifuge-based simulations are investigated for the simulation of G-loads that are typically present in upset conditions. Information on the SUPRA program can be found in reference Groen et al. 2011 and is also available via the website of the project . Fig. 16. SUPRA simulation facilities for conducting advanced upset recovery simulation research to improve pilot training in upset recovery and reduce LOC-I accident rates. Left NLR Generic Research Aircraft Cockpit Environment GRACE

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