• Aviation, Semester 2, position 2

The main objective of the course is to develop understanding of the stability and controllability of the aircraft. This course directly prepares student to apply knowledge of the stability, maneuverability and aircraft control in the design of the aircraft. Within the project assignment that encompasses and integrates the whole curriculum, the students will be able to fully master the analysis of stability and maneuverability in the design of aircraft by using modern software packages.

Having mastered the planned curriculum, the student acquires sufficient theoretical knowledge to be able to independently define the state of the static and dynamic stability and maneuverability of modern aircraft and any flight restrictions that arise from it. In this course, students will receive full sublimation and the verification of previously acquired knowledge and skills that they have required within the aviation modules from the group of aerodynamic subjects.

- Introduction. - Revision of mechanics of aircraft flight. - Basic concepts of stability and controllability of the aircraft. - Differential equations of stability. - Stability criteria. - Aerodynamic stability derivatives. - Static stability and controllability of the airplane. - Dynamic stability and controllability of the aircraft. - Aircraft parts contributions to the longitudinal stability (wings, horizontal tail, fuselage and nacelle contributions). - Power plant influence on the longitudinal static stability. - Neutral point of the aircraft. - Angle of horizontal stabilizer setting. - Balancing with the deflection of elevator. - Marginal rear and front position of the aircraft center of gravity permitted. - Longitudinal static stability of the aircraft. - Static stability of the aircraft in maneuvering flight. - Lateral static stability and maneuverability of the aircraft – Dihedral effect. - Dynamic stability of the aircraft. - Longitudinal dynamic stability. - Lateral-directional dynamic stability.

Criteria of stability and controllability of the aircraft movement. Calculation of the certain aircraft parts contribution to the total longitudinal stability with the control held. Rear position of the center of the aircraft gravity. Calculation of the longitudinal controllability of the aircraft. Calculation of the longitudinal static stability with the control released. Calculation of forces acting on the stick in steady flight. Calculation of the longitudinal static stability in maneuvering flight with the control held. Calculation of the longitudinal static stability in maneuvering flight with the control released. Derivatives and parameters in the equations of the aircraft motion. Experimental determination of stability derivatives. Computation tasks from the contents taught in the course. Tutorials follow the theoretical lectures. Consultations.

No special conditions.

Necessary material for lectures, tutorials, assignments, projects and term papers will be available to the students on the following website http://vaz.mas.bg.ac.rs/moodle.

Total assigned hours: 75

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

Auditory exercises: 5
Laboratory exercises: 20
Calculation tasks: 5
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

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

Activity during lectures: 10
Test/test: 0
Laboratory practice: 10
Calculation tasks: 10
Seminar paper: 0
Project: 40
Final exam: 30
Requirement for taking the exam (required number of points): 35

M. Nenadović, Stabilnost i upravlјivost letelica, I i II deo, Beograd (1981/1984); Jan Roskam, Airplane Flight Dynamics and Automatic Flight Controls, Part 1, 2001.; M.V. Cook, Flight Dynamics Principles, Second Edition, Butterworth-Heinemann, 2007.; R. F. Stengel, Flight Dynamics, Princeton University Press, 2004.