Course detail

Aircraft Structure I

FSI-OPKAcad. year: 2011/2012

History of aviation. New trends of aircraft evolution. Loading effects on an airplane. Airworthiness requirements, manoeuvring and gust envelope. The integral view analysing the stress and deformation distribution in aircraft structures. Ultimate strength of thin-walled airframe structure. Methods of mass effective design aircraft structures. State of stress in open and multibox structures. Structural web and column stabilities. Spar, semi-monocoque and monocoque structures. The modern methods of stress-deformation analysis.

Language of instruction

Czech

Number of ECTS credits

7

Mode of study

Not applicable.

Guarantor

prof. Ing. Antonín Píštěk, CSc.

Department

Institute of Aerospace Engineering (LÚ)

Learning outcomes of the course unit

Students will be acquainted with the airworthiness requirements. They will learn how to calculate the loading on individual parts of airplane, the stress and deformation for open and multibox structures and the critical stress of stability loss.

Prerequisites

The basic knowledge of mathematics, mechanics, structure and strength.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations.

Assesment methods and criteria linked to learning outcomes

Conditions for the course-unit credit award: participation in lessons (80% at least), presentation of the report elaboration from laboratory exercises. The exam has written (theoretical part and practical exercises) and oral parts.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

The goal is to familiarize students with the most important airworthiness requirements, to explain the theoretical basis of tension calculations and deformation of thin-walled aircraft structures. Students will acquire theoretical and practical knowledge of stability of rods and walls.

Specification of controlled education, way of implementation and compensation for absences

Both lectures and exercises are compulsory, and the attendance (80% at least) is checked and recorded. The absence (in justifiable cases) can be compensated by personal consultation with the lecturer and elaboration of individually assigned topics and exercises. Individual tasks must be finished and handed in the week course-unit credits are awarded at the latest

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Niu, m. C., Airframe Structural Design, Hong KonG ConMilit Press, ISBN 962-7128-09-0, Hong kong, 1988 (EN)

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme N2301-2 Master's

    branch M-STL , 1 year of study, winter semester, compulsory

Type of course unit

 

Lecture

52 hod., optionally

Teacher / Lecturer

prof. Ing. Antonín Píštěk, CSc.

Syllabus

1. New trends in aerospace engineering. Types of aircraft.
2. Main airworthiness requirements. Maneuvering and gust envelope.
3. Flight and ground load cases. Loads imposed on the wing and tail surfaces.
4. Means to reduce weight.
5. Tension in thin-walled open sections. Torsion-free bending.
6. Deformation of the structure, elastic axis, influence of curvature and junction.
7. Prevention of buckling. Stiffness enhancement.
8. Spar structure. Shear flow method. Deformation of a structure composed of walls and rods.
9. Monobox and multi-box spar structures.
10. Stability of rods. Influence of combined loads.
11. Stability of walls. Influence of curvature and border conditions.
12. Influence of slenderness ratio, combined loads, multiparametric systems.
13. Tension in sandwich structures.

Exercise

33 hod., compulsory

Teacher / Lecturer

prof. Ing. Antonín Píštěk, CSc.

Syllabus

1. Introduction using brochures and videos.
2. Manoeuvring envelope.
3. Gust envelope.
4. Introduction to SAVLE software application.
5. Wing loading and tail surface loading in SAVLE.
6. Wing loading and tail surface loading in SAVLE.
7. Landing gear system loading - in connection to SAVLE.
8. Open sections, examples for stress and shear centre calculations.
9. Spar structures – example.
10. Lab. protocol.
11. Stability calculations using tables and supporting diagrams.