Aerostructures Capability (FSI-OPK)

Academic year 2023/2024
Supervisor: doc. Ing. Jaroslav Juračka, Ph.D.  
Supervising institute: LÚ all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
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.
Learning outcomes and competences:
The course enables students to realize typical calculations of aircraft thin-walled structures in non-linear areas of loading.
Prerequisites:
The basic knowledge of mathematics, mechanics, structure and strength. Passing of OSZ-A Aircraft design course.
Course contents:
Comprehensive overview of of stress calculation , deformation and load-bearing capacity of thin-walled structures. Methods of weight reduction and efficient use of material. Stability of rods and walls. Calculations of load-bearing capacity of spar and semi-monocoque thin-walled structures. Calculations of aircraft parts. Sandwich construction.
Teaching methods and criteria:
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures. Teaching is suplemented by practical laboratory work.
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.
Controlled participation in lessons:
Lectures are not compulsory, attendance is registrated. 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
Type of course unit:
    Lecture  13 × 4 hrs. compulsory                  
    Laboratory exercise  2 × 2 hrs. compulsory                  
    Exercise  11 × 2 hrs. compulsory                  
Course curriculum:
    Lecture

  1. Introduction, Thin-walled structures.

  2. Limit states of materials.

  3. Stability of bars, influence of combined load. Stability of walls, influence of curvature and boundary conditions.

  4. Spar with thin web.

  5. Spar structures as box structures.

  6. Capacity of spar, semi-monocoque and monocoque structures.

  7. Method of proportional loading.

  8. Sandwich panel analysis.

  9. FEM modelling and analysis.

  10. Optimization of aircraft structures in terms of weight savings.
    Laboratory exercise 1. Laboratory static tests of rods.
2. Laboratory static tests of walls.
3. Attendance on the aircraft structure test.
    Exercise

  1. Load definition and stress analysis of landing gear.

  2. Wing load calculation.

  3. Calculation of Centre of Shear.

  4. Hinge stress analysis.

  5. Bar crimpling.

  6. Panel buckling.

  7. Spar with unstable web - application of theory.

  8. Rib analysis.

  9. Calculation of cross sections capability.

  10. Sandwich panel analysis.
Literature - fundamental:
1. Bruhn, E.F., Analysis and Design of Flight vehicle structures, Jacobs Publishing, USA, 1973
2. Niu, m. C., Airframe Structural Design, Hong KonG ConMilit Press, ISBN 962-7128-09-0, Hong kong, 1988
3. Čalkovský, A., Pávek, J., Daněk, V.: Konstrukce a pevnost letadel, VAAz, Brno 1984
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
N-LKT-P full-time study STL Aircraft Design -- Cr,Ex 5 Compulsory 2 1 S