Aeroelasticity

ID: 0645
Course type: theoretical and methodological
Course coordinator: Dinulović R. Mirko
Lecturers: Dinulović R. Mirko
Contact: Dinulović R. Mirko
Level of studies: M.Sc. (graduate) Academic Studies – Mechanical Engineering
ECTS: 6
Final exam type: written+oral
Department: Department of Aerospace Engineering

Lectures

Goal

1. introduction to modern aeroelasticity problems and their analysis and practical methods to solving aeroelasticity problems in real aircraft structures 2. introduction to experimental dynamic analysis of aircraft structures 3. introduction to dynamics of thin walled structures

Outcome

After successful competition of the course students should be able to: 1. Determine forms of oscillation of thin walled structure 2. calculate the torsional divergence speed of lifting surface 3. Calculate the command reversal speed ( ailerons ) on the wings 4. Estimate flutter speed of the lifting surface using Teodorsen method 5. Generate finite element models of lifting surfaces of the aircraft for static and dynamic aeroelastic analysis .

Theoretical teaching

In the theoretical part of the course following topics are covered: Introduction to aeroelasticity. Types of aeroelastic phenomena on aircrafts and structures in general. Static, dynamic aeroelasticity. Differntial equations and solution methods. Galerkin’s method, collocation at the point, collocation at subdomain. Oscillations, types, mathematical models. Wing divergence, Command reversal, Flutter. Oscillations of continual distributed mass.

Practical teaching

During practical part of the course covered topis in theoretical part are demonstrated in practice. Typical practical problmes are analyzed through numerical examples. Students are required to complete practical project work using computer modeling and analysis. All required material is available in the form of lecture notes, books and past exams and tests.

Attendance requirement

Mathematics, Resistance of materials

Resources

Computing Laboratory for Theory of elasticity and Aeroelasticity

Assigned hours

Total assigned hours: 75

Active teaching (theoretical)

New material: 20
Elaboration and examples (recapitulation): 10

Active teaching (practical)

Auditory exercises: 10
Laboratory exercises: 0
Calculation tasks: 10
Seminar paper: 0
Project: 10
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Knowledge test

Review and grading of calculation tasks: 5
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 5
Test: 0
Test: 0
Final exam: 5

Knowledge test (100 points total)

Activity during lectures: 10
Test/test: 20
Laboratory practice: 0
Calculation tasks: 10
Seminar paper: 0
Project: 20
Final exam: 40
Requirement for taking the exam (required number of points): 40

Literature

An introduction to the theory of aeroelasticity, Y.C. Fung, Dover publication 1993