Ebook: Optimization Based Clearance of Flight Control Laws: A Civil Aircraft Application

This book summarizes the main achievements of the EC funded 6^th Framework Program project COFCLUO – Clearance of Flight Control Laws Using Optimization. This project successfully contributed to the achievement of a top-level objective to meet society’s needs for a more efficient, safer and environmentally friendly air transport by providing new techniques and tools for the clearance of flight control laws. This is an important part of the certification and qualification process of an aircraft – a costly and time-consuming process for the aeronautical industry.

The overall objective of the COFCLUO project was to develop and apply optimization techniques to the clearance of flight control laws in order to improve efficiency and reliability. In the book, the new techniques are explained and benchmarked against traditional techniques currently used by the industry. The new techniques build on mathematical criteria derived from the certification and qualification requirements together with suitable models of the aircraft. The development of these criteria and models are also presented in the book.

Because of wider applicability, the optimization-based clearance of flight control laws will open up the possibility to design innovative aircraft that today are out of the scope using classical clearance tools. Optimization-based clearance will not only increase safety but it will also simplify the whole certification and qualification process, thus significantly reduce cost. The achieved speedup will also support rapid modeling and prototyping and reduce “time to market”.

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This book summarizes the main achievements of the EC funded 6^th Framework Program project COFCLUO – Clearance of Flight Control Laws Using Optimization. This project successfully contributed to the achievement of a top-level objective to meet society’s needs for a more efficient, safer and environmentally friendly air transport by providing new techniques and tools for the clearance of flight control laws. This is an important part of the certification and qualification process of an aircraft – a costly and time-consuming process for the aeronautical industry.

The overall objective of the COFCLUO project was to develop and apply optimization techniques to the clearance of flight control laws in order to improve efficiency and reliability. In the book, the new techniques are explained and benchmarked against traditional techniques currently used by the industry. The new techniques build on mathematical criteria derived from the certification and qualification requirements together with suitable models of the aircraft. The development of these criteria and models are also presented in the book.

Because of wider applicability, the optimization-based clearance of flight control laws will open up the possibility to design innovative aircraft that today are out of the scope using classical clearance tools. Optimization-based clearance will not only increase safety but it will also simplify the whole certification and qualification process, thus significantly reduce cost. The achieved speedup will also support rapid modeling and prototyping and reduce “time to market”.

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This book summarizes the main achievements of the EC funded 6^th Framework Program project COFCLUO – Clearance of Flight Control Laws Using Optimization. This project successfully contributed to the achievement of a top-level objective to meet society’s needs for a more efficient, safer and environmentally friendly air transport by providing new techniques and tools for the clearance of flight control laws. This is an important part of the certification and qualification process of an aircraft – a costly and time-consuming process for the aeronautical industry.

The overall objective of the COFCLUO project was to develop and apply optimization techniques to the clearance of flight control laws in order to improve efficiency and reliability. In the book, the new techniques are explained and benchmarked against traditional techniques currently used by the industry. The new techniques build on mathematical criteria derived from the certification and qualification requirements together with suitable models of the aircraft. The development of these criteria and models are also presented in the book.

Because of wider applicability, the optimization-based clearance of flight control laws will open up the possibility to design innovative aircraft that today are out of the scope using classical clearance tools. Optimization-based clearance will not only increase safety but it will also simplify the whole certification and qualification process, thus significantly reduce cost. The achieved speedup will also support rapid modeling and prototyping and reduce “time to market”.

Content:
Front Matter....Pages -
Front Matter....Pages 1-1
Introduction....Pages 3-9
Clearance Benchmark for a Civil Aircraft....Pages 11-36
Front Matter....Pages 37-37
Generation of LPV Models and LFRs for a Nonlinear Aircraft Model....Pages 39-57
Generation of LFRs for a Flexible Aircraft Model....Pages 59-77
Generation of LFRs for a Nonlinear Controller and Closed-Loop Aircraft Models....Pages 79-109
Front Matter....Pages 111-128
Enhanced ?-Analysis Techniques for Clearance....Pages 129-129
Worst-Case Parameter Search Based Clearance Using Parallel Nonlinear Programming Methods....Pages 131-147
Lyapunov-Based Robustness Analysis Techniques for Clearance....Pages 149-159
IQC-Based Analysis Techniques for Clearance....Pages 161-178
Nonlinear Programming Methods for Worst-Case Pilot Input Determination....Pages 179-201
Front Matter....Pages 203-217
Application of ?-Analysis Techniques to Clearance....Pages 219-219
Application of Parallel Nonlinear Programming Methods for Worst-Case Parameter Search....Pages 221-232
Applications of Lyapunov-Based Analysis Techniques for Clearance....Pages 233-252
Applications of IQC-Based Analysis Techniques for Clearance....Pages 253-275
Application of Nonlinear Programming Methods for Determination of Worst-Case Pilot Inputs....Pages 277-297
Front Matter....Pages 299-315
Evaluation of Clearance Techniques in an Industrial Context....Pages 317-317
Concluding Remarks and Industrial Perspective....Pages 319-357
Front Matter....Pages 359-365
Assessment of Aircraft Flight Controllers Using Nonlinear Robustness Analysis Techniques....Pages 367-367
Validation and Verification (V&V) of Safety-Critical Systems Operating under Off-Nominal Conditions....Pages 369-397
Back Matter....Pages 399-419
Clearance of Flight Control Laws for Carefree Handling of Advanced Fighter Aircraft....Pages -
....Pages 421-442