Aeroelasticity

Module Number: MW2228

Duration: 1 Semester

Recurrence: Winter Semester / Summer Semester

Language: English

Number of ECTS: 5

Staff

Professor in charge: Carlo Bottasso

Amount of work

Contact hours: 45

Self-study hours: 105

Total: 150

Subtitle

The course describes basic aeroelastic phenomena arising from the mutual interaction of elastic, aerodynamic and inertial forces on a structure, with special emphasis on problems related to fixed wing vehicles. Aeroelasticity plays a major role in the design, qualification and certification of flying vehicles, as it contributes to the definition of the flight envelope and affects various performance indicators. The course is organized according to the following plan:• Introduction: why aeroelasticity matters, basic concepts in aeroelasticity, examples (including the role of aeroelasticity beyond aeronautical engineering).• Static aeroelasticity: divergence speed; lift distribution over straight and swept flexible wings; aileron effectiveness and reversal.• Dynamic aeroelasticity: vibrations of beams and mode coalescence; flutter; transient response, including gust response.

Course work and exam formalities

final exam, written or oral, 90 minutes

Content

The course describes basic aeroelastic phenomena arising from the mutual interaction of elastic, aerodynamic and inertial forces on a structure, with special emphasis on problems related to fixed wing vehicles. Aeroelasticity plays a major role in the design, qualification and certification of flying vehicles, as it contributes to the definition of the flight envelope and affects various performance indicators. The course is organized according to the following plan:• Introduction: why aeroelasticity matters, basic concepts in aeroelasticity, examples (including the role of aeroelasticity beyond aeronautical engineering).• Static aeroelasticity: divergence speed; lift distribution over straight and swept flexible wings; aileron effectiveness and reversal.• Dynamic aeroelasticity: vibrations of beams and mode coalescence; flutter; transient response, including gust response.

Learning outcome

After successfully completing the course, the student will be able to:• Comprehend typical aeroelastic problems, understanding the physical principles at play;• Appreciate the role of aeroelasticity in the design of flying vehicles;• Derive simple models for the description of basic static and dynamic aeroelastic problems, accounting for all relevant forces;• Use the models for making quantitative predictions on the insurgence of important aeroelastic phenomena, such as divergence and flutter;• Understand the limits of the simple methods used in the course, and appreciate how more sophisticated approaches for practical engineering applications are developed.

Teaching and learning methods

Learning method: In addition to the individual methods of the students, consolidated knowledge is aspired by repeated lessons in exercises and tutorials. Teaching method: During the lectures students are instructed in a teacher-centered style. The exercises are held in a student-centered way

Media

The following kinds of media are used:- Class room lectures;- Lecture notes (handouts);- Exercises with solutions provided as download.

Reading List

Course material will be provided by the instructor. Additional recommended book:

R.L. Bisplinghoff, H. Ashley, Principles of Aeroelasticity, Courier Dover Publications, 2002."