11493 - Aircraft and Aerospace Design

Learning outcomes

At the end of the course the student knows the main rules of representation of the assemblies and parts. He/She is able to read a technical drawing, she/he knows the standard components representation and their use, he/she understands the design solutions typical of the aerospace industry and she/he knows how the realization technologies can impact the design of a component. He/she possesses the fundamental skill to realize a 2d drawing from a three-dimensional one, both in terms of representing it on the sheet, and with regards to the choice of materials and manufacturing technologies.

Course contents

Introduction to the course. Papers and instruments for design and drawings. Standard lines; inscriptions; basic geometrical constructions; rules of orthogonal projection methods; sections; cavalier and isometric perspective. Standards in technical design; type of drawing: parts, assembly, installation, exploded, for manufacturing. Technological tests and materials classification. Applications and nomenclature of materials used in aerospace: steel, alluminum, magnesium, titanium, composite materials (glass, carbon, kevlar fibres); thermal processing. Standard numbers; Renard series; dimensional and geometrical tolerances; roughness; micro and macro geometrical errors. Joints; threaded connections; hot and cold riveting; shaft-hub joints; conical elements joints; other joints; articulated joints and guide. Llubrication methods. Plain bearings; rolling bearings; bearings assemblies; seal systems. Elastic and rigid joints; transmissions with belts and pulleys; friction wheels, gears; worm gears and ca. Design and sketching of aerospace components.

Readings/Bibliography

Lecture notes delivered during the course, accessible on the University page to the students of the University of Bologna who selected the exam in the study plan (website: virtuale.unibo.it).

Further resources useful to students interested in a more deep analysis of the course topics:
Manfè, Pozza, Scarato - Disegno Meccanico – Principato Editore, Milano, Voll. 1, 2 e 3
Chirone, Tornincasa – Disegno Tecnico Industriale – Edizione Capitello, Torino, Voll. 1 e 2
UNI M1, Norme per il disegno tecnico, UNI, Milano.
Megson, Aircraft Structures for Engineering Students, Fourth Edition (Elsevier Aerospace Engineering)

Teaching methods

The course consists of 6CFU, corresponding to 60 hours, of which 30 of lectures and 30 of practical drawing exercises. Practical exercises are carried out in the classroom equipped with drawing tables and in the computer room. The goal of practical lessons is to teach students the technical drawing by hand. The aspects related to the drawing, the setting of dimensional/geometric tolerances (GD&T) and roughness are also dealt with by giving a hint of how these are managed in the CAD codes.

In consideration of the teaching methods adopted in this course unit, all the students must attend Module 1 and 2 on Health and Safety (https://www.unibo.it/en/services-and-opportunities/health-and-assistance/health-and-safety/online-course-on-health-and-safety-in-study-and-internship-areas) in e-learning mode.

Assessment methods

The final exam evaluates the achievement of the following educational objectives:

- knowledge of the main representation rules of assemblies and partsdrawings.

-reading an assembly drawing and a technical drawing of a component.

-correct positioning of the 2 view of the three-dimensional component in the sheet.

The mark that the student achieves during the examination is assigned taking into account the results of the written part of the examination (constructive drawing of a particular starting from the assembly) and oral (some questions that may concern theoretical aspects or the sketching of a component). To access the writing, the students must have completed 20 drawing that are delivered and solved on the blackboard during the excercise lessons. Students must present themselves in the written test equipped with drawing sheets and tools for hand drawing. The written test lasts 1h15 minutes and after the test is completed, a correction is made on the blackboard. About 2 hours after the end of the written part of the exam (depending on the number of students who did the written exams) the students are individually called to the desk to view the corrections of their job and to know the mark of the written part. Once the vision of the tasks is finished, the oral tests begin. The examination procedures are communicated to the students on the first day of class.

Teaching tools

The teaching material presented in class will be made available to the student in electronic format via the web. To obtain the educational material please go to: virtuale.unibo.it . The material is reserved to the students of the University of Bologna who includes the course in the study plan, for personal use only.

Any student who's unable to attend can find on the website virtuale.unibo.it both the drawings to be done by hand (including a possible solution), and a summary of the theoretical topics covered in the course.

Office hours

See the website of Alessandro Ceruti