## Gennaro SCARSELLI

### Ricercatore Universitario

Settore Scientifico Disciplinare ING-IND/04: COSTRUZIONI E STRUTTURE AEROSPAZIALI.

### Curriculum Vitae

Currently he is Assistant Professor at University of Salento, Department of Engineering for Innovation. He got the Degree in Aeronautical Engineering (specialized in aerospace structures) at University of Naples “Federico II” on 16th December 1996 with full honours; he has achieved the Ph.D. in Aerospace Engineering at University of Naples “Federico II” discussing a thesis on the following topic: “Mistuning effects on the dynamic behaviour of bladed discs employed in turbomachinery”, Tutor: Prof. L. Lecce. He performed research activities at University of Naples since 1997 to 2008 within different Research Programmes, Contracts with Private and Public bodies. He has been active researcher in the following Programmes funded by European Union in which the Department of Aerospace Engineering of University of Naples “Federico II” has been Partner: MADAVIC: employment of magnetostrictive materials for the design of innovative actuators; ADTurB II: structural problems concerning the turbomachinery; CAPECON: employment of UAV for civil purposes; SEFA: airport noise and exposure of communities to aircraft noise; HISAC: design of small supersonic business jet; COSMA: aircraft noise and mitigation of the exposure of communities to sound pressure levels due to airport operations. Since December 2008 he is working at University of Salento. He is currently active in the following research fields: structural dynamics; acoustics (interior and external) and vibration; definition of innovative solutions for the reduction of noise and vibration propagating through panels employed in aerospace field; advanced structural analysis through optimization codes integrated into structural computation codes; corrosion of aeronautical structures; numerical and experimental vibrational analysis of light structures for NDT. He is author of about 45 scientific publications issued on Journals and Conference Proceedings.He has achieved the following teaching activities (since 1998 to now):

(at University of Salento):

academic years since 2008/2009 to now:

in charge of the Course of Aerospace Structures (9 CFU, 1 CFU = 9 hours of lesson in classroom) for students of 1st year of the second level Degree in Aerospace Engineering;

academic year 2008/2009:

in charge of the Course of Aeronautical Certification (3 CFU) for students of 2nd year of the second level Degree in Aerospace Engineering;

academic years 2009/2010, 2010/2011:

in charge of the Course of Aerospace Structures Laboratory (3 CFU) for students of 2nd year of the second level Degree in Aerospace Engineering;

academic year 2011/2012:

in charge of the Course of Advanced Computations for Aerospace Structures (3 CFU) for students of 2nd year of the second level Degree in Aerospace Engineering;

(at University of Naples) lessons inside the Courses of:

Aerospace Structures (Theory and Practice) for students of 5th year of the Degree in Aerospace Engineering (old system);

Aerospace Structures II (Theory and Practice) for students of 3rd year of the Degree in Aerospace Engineering (new system).

Aerospace Structures (9 CFU)

II Semester (1/3/2017-2/6/2017)

Overview

This is a course on the architecture definition and preliminary design of aerospace structures. It is aimed at providing principles and tools to solve structural problems concerning the main parts of aerospace vehicles under the action of typical mission loads. Elements of Aeroelasticity and Fatigue are also provided

Learning Outcomes; after the course the student should be able: to perform the preliminary design of a typical civil aircraft component according to the airworthiness regulations; to select the structural material suitable for the different structural parts of a flying vehicle; to perform proper considerations about the structural stability, the aeroelastic issues and the fatigue life of aeronautical structures.

Course Content

Architectural elements of the aircraft. The primary structures. The secondary structures. Wings: the wing box, the spars, the stiffeners, the ribs. The frames. The tail. Solutions used for the different categories of aircraft. (3 hours).

The loads. The regulatory framework. Load factors. Speed characteristics. Symmetrical maneuvers. Diagram of maneuver. Diagram of load balancing. Gust loads. Diagram of gust loads. Not symmetrical maneuvers. Controlled and uncontrolled maneuvers. Ground handling. Landing loads. The pressurization. (8 hours).

Mechanical behavior of materials. Fatigue problems in aircraft structures. Allowable mechanical stress. Criterion for the selection of materials for aerospace structures. Stress-strain relations for linear elastic materials. (4 hours).

Principles of construction of aircraft structures. The materials commonly used in the construction of the aircraft. The materials associated with the various parts of the airplane. The function of the structural elements. The implementation of structural elements. Bending, shear and torsion of thin-walled beams with open and closed sections. Structural analysis of combined open and closed sections. Structural idealization of wing box and typical aircraft structures to lumped parameters. Effect of idealization on the analysis of beam sections, open and closed. Analysis of the displacements of open and closed beam sections. Stress analysis on the elements of an aircraft. Effect of taper on lumped parameters idealized beams. Analysis of the wings. Fuselage frames and wing ribs. Effects of the openings in wings and fuselages. (38 hours). Solution of assigned problems (10 hours).

Structural instability. Euler buckling load for the beams under axial compression. Inelastic buckling. Buckling of thin plates. Inelastic buckling of plates. Experimental determination of the critical load for a plate. Local buckling of the plates. Instability of stiffened panels. Evaluation of failure loads for thin plates and stiffened panels. Lateral torsional buckling of thin-walled columns. Tension field, complete and incomplete. (7 hours)

Elements of Aeroelasticity. The Aeroelasticity: background and principles. Static and dynamic aeroelastic phenomena. The divergence. Control effectiveness and reversal. Methods for the prevention of static aeroelastic phenomena. The flutter. Methods for the prevention of flutter in typical aircraft structures. (7 hours)

Elements of fatigue in aircraft structures. S-N curves. The fatigue design in the field of aerospace structures: safe-life, fail-safe structures. GAG cycle. Procedure for calculating the fatigue life of an aeronautical structural component (4 hours).

**Prerequisite: **

Knowledge of calculus, geometry and linear algebra, structural analysis.

**Examination:**

The exam consists of two separate parts:

the first part is written and is based on the solution of three typical structural schemes of aerospace interest.

the second part is oral and is performed only if the student passes the first part. The oral examination is based on all the topics presented and discussed by the teacher in the classroom. The student must be able to talk about these topics demonstrating to know in detail the associated structural issues.

** **

**Office Hours: **

By appointment; contact the instructor by email or at the end of class meetings.

__ __

References:

[1] Handouts (in progress).

[2] “Aircraft structures for engineering students”, T.H.G. Megson.

### Didattica

#### A.A. 2018/2019

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Lingua INGLESE

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0

Anno accademico di erogazione 2018/2019

Per immatricolati nel 2018/2019

Anno di corso 1

Struttura DIPARTIMENTO DI INGEGNERIA DELL'INNOVAZIONE

Percorso PERCORSO COMUNE

Sede BRINDISI

#### A.A. 2017/2018

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Lingua INGLESE

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0

Anno accademico di erogazione 2017/2018

Per immatricolati nel 2017/2018

Anno di corso 1

Struttura DIPARTIMENTO DI INGEGNERIA DELL'INNOVAZIONE

Percorso PERCORSO COMUNE

Sede BRINDISI

#### A.A. 2016/2017

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0 Ore Studio individuale: 144.0

Anno accademico di erogazione 2016/2017

Per immatricolati nel 2016/2017

Anno di corso 1

Struttura DIPARTIMENTO DI INGEGNERIA DELL'INNOVAZIONE

Percorso PERCORSO COMUNE

Sede BRINDISI

#### A.A. 2015/2016

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0 Ore Studio individuale: 144.0

Anno accademico di erogazione 2015/2016

Per immatricolati nel 2015/2016

Anno di corso 1

Struttura DIPARTIMENTO DI INGEGNERIA DELL'INNOVAZIONE

Percorso PERCORSO COMUNE

Sede BRINDISI

#### A.A. 2014/2015

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 78.0 Ore Studio individuale: 147.0

Anno accademico di erogazione 2014/2015

Per immatricolati nel 2014/2015

Anno di corso 1

Struttura DIPARTIMENTO DI INGEGNERIA DELL'INNOVAZIONE

Percorso PERCORSO COMUNE

Sede BRINDISI

#### A.A. 2013/2014

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 78.0 Ore Studio individuale: 147.0

Anno accademico di erogazione 2013/2014

Per immatricolati nel 2013/2014

Anno di corso 1

Struttura DIPARTIMENTO DI INGEGNERIA DELL'INNOVAZIONE

Percorso PERCORSO COMUNE

Sede BRINDISI

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Settore Scientifico Disciplinare ING-IND/04

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0

Per immatricolati nel 2018/2019

Anno accademico di erogazione 2018/2019

Anno di corso 1

Semestre Secondo Semestre (dal 04/03/2019 al 04/06/2019)

Lingua INGLESE

Percorso PERCORSO COMUNE (999)

Sede BRINDISI

Knowledge of calculus, geometry and linear algebra, structural analysis.

This is a course on the architecture definition and preliminary design of aerospace structures. It is aimed at providing principles and tools to solve structural problems concerning the main parts of aerospace vehicles under the action of typical mission loads. Elements of Aeroelasticity and Fatigue are also provided

At the end of the course the student is expected to:

1) understand the criteria of choosing aerospace architecture and materials;

2) understand the design rules for aircraft of different size;

3) elaborate a lumped parameters structural equivalent model for preliminary computations;

4) understand the numbers coming out from the computation;

5) have a global view on the overall structural issues of a typical flying vehicle.

Two basic appraoches are followed:

- standard class lectures, where the teacher presents methods and models; students are encouraged to participate by discussing validity of the assumptions at the basis of the models and physical meanings of the results derived from the analysis performed. Example: derive the structural model of a typical wing;

- tutorial classes, during which problems are stated, where the students refine their understanding, by numerically solving the structural problems; the teacher supports the class by recalling relevant models and highlighting the procedure; some calculations (e.g. for a different set of parameters) can be proposed to the students as homework. Example: evaluate stress and displacement filed for a typical wing subjected to operating loads.

The exam consists of two separate parts:

the first part is written and is based on the solution of three typical structural schemes of aerospace interest;

the second part is oral and is based on all the topics presented and discussed by the teacher in the classroom. The student must be able to talk about these topics demonstrating to know in detail the associated structural issues.

Exams are performed according to current University regulations (3 exams at the end of each semester, 1 exam in September, 2 extraordinaty exams for students who finished the regular course).

Exact dates are provided on the University website, as soon as they are available.

By appointment; contact the instructor by email or at the end of class meetings.

Architectural elements of the aircraft. The primary structures. The secondary structures. Wings: the wing box, the spars, the stiffeners, the ribs. The frames. The tail. Solutions used for the different categories of aircraft. (3 hours).

The loads. The regulatory framework. Load factors. Speed characteristics. Symmetrical maneuvers. Diagram of maneuver. Diagram of load balancing. Gust loads. Diagram of gust loads. Not symmetrical maneuvers. Controlled and uncontrolled maneuvers. Ground handling. Landing loads. The pressurization. (8 hours).

Mechanical behavior of materials. Fatigue problems in aircraft structures. Allowable mechanical stress. Criterion for the selection of materials for aerospace structures. Stress-strain relations for linear elastic materials. (4 hours).

Principles of construction of aircraft structures. The materials commonly used in the construction of the aircraft. The materials associated with the various parts of the airplane. The function of the structural elements. The implementation of structural elements. Bending, shear and torsion of thin-walled beams with open and closed sections. Structural analysis of combined open and closed sections. Structural idealization of wing box and typical aircraft structures to lumped parameters. Effect of idealization on the analysis of beam sections, open and closed. Analysis of the displacements of open and closed beam sections. Stress analysis on the elements of an aircraft. Effect of taper on lumped parameters idealized beams. Analysis of the wings. Fuselage frames and wing ribs. Effects of the openings in wings and fuselages. (38 hours). Solution of assigned problems (10 hours).

Structural instability. Euler buckling load for the beams under axial compression. Inelastic buckling. Buckling of thin plates. Inelastic buckling of plates. Experimental determination of the critical load for a plate. Local buckling of the plates. Instability of stiffened panels. Evaluation of failure loads for thin plates and stiffened panels. Lateral torsional buckling of thin-walled columns. Tension field, complete and incomplete. (7 hours)

Elements of Aeroelasticity. The Aeroelasticity: background and principles. Static and dynamic aeroelastic phenomena. The divergence. Control effectiveness and reversal. Methods for the prevention of static aeroelastic phenomena. The flutter. Methods for the prevention of flutter in typical aircraft structures. (7 hours)

Elements of fatigue in aircraft structures. S-N curves. The fatigue design in the field of aerospace structures: safe-life, fail-safe structures. GAG cycle. Procedure for calculating the fatigue life of an aeronautical structural component (4 hours).

[1] Handouts (in progress).

[2] “Aircraft structures for engineering students”, T.H.G. Megson.

##### AEROSPACE STRUCTURES (ING-IND/04)

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Settore Scientifico Disciplinare ING-IND/04

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0

Per immatricolati nel 2017/2018

Anno accademico di erogazione 2017/2018

Anno di corso 1

Semestre Secondo Semestre (dal 01/03/2018 al 01/06/2018)

Lingua INGLESE

Percorso PERCORSO COMUNE (999)

Sede BRINDISI

Knowledge of calculus, geometry and linear algebra, structural analysis.

This is a course on the architecture definition and preliminary design of aerospace structures. It is aimed at providing principles and tools to solve structural problems concerning the main parts of aerospace vehicles under the action of typical mission loads. Elements of Aeroelasticity and Fatigue are also provided

At the end of the course the student is expected to:

1) understand the criteria of choosing aerospace architecture and materials;

2) understand the design rules for aircraft of different size;

3) elaborate a lumped parameters structural equivalent model for preliminary computations;

4) understand the numbers coming out from the computation;

5) have a global view on the overall structural issues of a typical flying vehicle.

Two basic appraoches are followed:

- standard class lectures, where the teacher presents methods and models; students are encouraged to participate by discussing validity of the assumptions at the basis of the models and physical meanings of the results derived from the analysis performed. Example: derive the structural model of a typical wing;

- tutorial classes, during which problems are stated, where the students refine their understanding, by numerically solving the structural problems; the teacher supports the class by recalling relevant models and highlighting the procedure; some calculations (e.g. for a different set of parameters) can be proposed to the students as homework. Example: evaluate stress and displacement filed for a typical wing subjected to operating loads.

The exam consists of two separate parts:

the first part is written and is based on the solution of three typical structural schemes of aerospace interest;

the second part is oral and is based on all the topics presented and discussed by the teacher in the classroom. The student must be able to talk about these topics demonstrating to know in detail the associated structural issues.

Exams are performed according to current University regulations (3 exams at the end of each semester, 1 exam in September, 2 extraordinaty exams for students who finished the regular course).

Exact dates are provided on the University website, as soon as they are available.

By appointment; contact the instructor by email or at the end of class meetings.

Architectural elements of the aircraft. The primary structures. The secondary structures. Wings: the wing box, the spars, the stiffeners, the ribs. The frames. The tail. Solutions used for the different categories of aircraft. (3 hours).

The loads. The regulatory framework. Load factors. Speed characteristics. Symmetrical maneuvers. Diagram of maneuver. Diagram of load balancing. Gust loads. Diagram of gust loads. Not symmetrical maneuvers. Controlled and uncontrolled maneuvers. Ground handling. Landing loads. The pressurization. (8 hours).

Mechanical behavior of materials. Fatigue problems in aircraft structures. Allowable mechanical stress. Criterion for the selection of materials for aerospace structures. Stress-strain relations for linear elastic materials. (4 hours).

Principles of construction of aircraft structures. The materials commonly used in the construction of the aircraft. The materials associated with the various parts of the airplane. The function of the structural elements. The implementation of structural elements. Bending, shear and torsion of thin-walled beams with open and closed sections. Structural analysis of combined open and closed sections. Structural idealization of wing box and typical aircraft structures to lumped parameters. Effect of idealization on the analysis of beam sections, open and closed. Analysis of the displacements of open and closed beam sections. Stress analysis on the elements of an aircraft. Effect of taper on lumped parameters idealized beams. Analysis of the wings. Fuselage frames and wing ribs. Effects of the openings in wings and fuselages. (38 hours). Solution of assigned problems (10 hours).

Structural instability. Euler buckling load for the beams under axial compression. Inelastic buckling. Buckling of thin plates. Inelastic buckling of plates. Experimental determination of the critical load for a plate. Local buckling of the plates. Instability of stiffened panels. Evaluation of failure loads for thin plates and stiffened panels. Lateral torsional buckling of thin-walled columns. Tension field, complete and incomplete. (7 hours)

Elements of Aeroelasticity. The Aeroelasticity: background and principles. Static and dynamic aeroelastic phenomena. The divergence. Control effectiveness and reversal. Methods for the prevention of static aeroelastic phenomena. The flutter. Methods for the prevention of flutter in typical aircraft structures. (7 hours)

Elements of fatigue in aircraft structures. S-N curves. The fatigue design in the field of aerospace structures: safe-life, fail-safe structures. GAG cycle. Procedure for calculating the fatigue life of an aeronautical structural component (4 hours).

[1] Handouts (in progress).

[2] “Aircraft structures for engineering students”, T.H.G. Megson.

##### AEROSPACE STRUCTURES (ING-IND/04)

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Settore Scientifico Disciplinare ING-IND/04

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0 Ore Studio individuale: 144.0

Per immatricolati nel 2016/2017

Anno accademico di erogazione 2016/2017

Anno di corso 1

Semestre Secondo Semestre (dal 01/03/2017 al 02/06/2017)

Lingua

Percorso PERCORSO COMUNE (999)

Sede BRINDISI

Knowledge of calculus, geometry and linear algebra, structural analysis.

At the end of the course the student is expected to:

1) understand the criteria of choosing aerospace architecture and materials;

2) understand the design rules for aircraft of different size;

3) elaborate a lumped parameters structural equivalent model for preliminary computations;

4) understand the numbers coming out from the computation;

5) have a global view on the overall structural issues of a typical flying vehicle.

Two basic appraoches are followed:

- standard class lectures, where the teacher presents methods and models; students are encouraged to participate by discussing validity of the assumptions at the basis of the models and physical meanings of the results derived from the analysis performed. Example: derive the structural model of a typical wing;

- tutorial classes, during which problems are stated, where the students refine their understanding, by numerically solving the structural problems; the teacher supports the class by recalling relevant models and highlighting the procedure; some calculations (e.g. for a different set of parameters) can be proposed to the students as homework. Example: evaluate stress and displacement filed for a typical wing subjected to operating loads.

The exam consists of two separate parts:

the first part is written and is based on the solution of three typical structural schemes of aerospace interest;

the second part is oral and is performed only if the student passes the first part. The oral examination is based on all the topics presented and discussed by the teacher in the classroom. The student must be able to talk about these topics demonstrating to know in detail the associated structural issues.

Exams are performed according to current University regulations (3 exams at the end of each semester, 1 exam in September, 2 extraordinaty exams for students who finished the regular course).

Exact dates are provided on the University website, as soon as they are available.

By appointment; contact the instructor by email or at the end of class meetings.

[1] Handouts (in progress).

[2] “Aircraft structures for engineering students”, T.H.G. Megson.

##### AEROSPACE STRUCTURES (ING-IND/04)

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Settore Scientifico Disciplinare ING-IND/04

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 81.0 Ore Studio individuale: 144.0

Per immatricolati nel 2015/2016

Anno accademico di erogazione 2015/2016

Anno di corso 1

Semestre Secondo Semestre (dal 29/02/2016 al 03/06/2016)

Lingua

Percorso PERCORSO COMUNE (999)

Sede BRINDISI

##### AEROSPACE STRUCTURES (ING-IND/04)

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Settore Scientifico Disciplinare ING-IND/04

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 78.0 Ore Studio individuale: 147.0

Per immatricolati nel 2014/2015

Anno accademico di erogazione 2014/2015

Anno di corso 1

Semestre Secondo Semestre (dal 02/03/2015 al 06/06/2015)

Lingua

Percorso PERCORSO COMUNE (999)

Sede BRINDISI

Knowledge of calculus, geometry and linear algebra, structural analysis.

At the end of the course the student is expected to:

1) understand the criteria of choosing aerospace architecture and materials;

2) understand the design rules for aircraft of different size;

3) elaborate a lumped parameters structural equivalent model for preliminary computations;

4) understand the numbers coming out from the computation;

5) have a global view on the overall structural issues of a typical flying vehicle.

Two basic appraoches are followed:

The exam consists of two separate parts:

the second part is oral and is performed only if the student passes the first part. The oral examination is based on all the topics presented and discussed by the teacher in the classroom. The student must be able to talk about these topics demonstrating to know in detail the associated structural issues.

Exact dates are provided on the University website, as soon as they are available.

By appointment; contact the instructor by email or at the end of class meetings.

[1] Handouts (in progress).

[2] “Aircraft structures for engineering students”, T.H.G. Megson.

##### AEROSPACE STRUCTURES (ING-IND/04)

##### AEROSPACE STRUCTURES

Corso di laurea AEROSPACE ENGINEERING

Settore Scientifico Disciplinare ING-IND/04

Crediti 9.0

Ripartizione oraria Ore Attività frontale: 78.0 Ore Studio individuale: 147.0

Per immatricolati nel 2013/2014

Anno accademico di erogazione 2013/2014

Anno di corso 1

Semestre Primo Semestre (dal 30/09/2013 al 21/12/2013)

Lingua

Percorso PERCORSO COMUNE (999)

Sede BRINDISI