Course detail

# Aerodynamics I

Fundamentals of fluid mechanics – Atmosphere and its properties, fluid properties, fundamental laws of fluid mechanics (recapitulate) – kinematics, dynamics of flow field, viscous effects (state equation, conservation of mass – eq. of continuity, Bernoulli’s eq., Euler’s eq., Navier-Stokes eq.). Airfoil and its aerodynamic properties – origination of aerodynamic forces – physical principle, aerodynamic forces acting on body in moving fluid and their mathematical model, force and moments coefficients, similarity numbers,  - theorem, aircraft wing section. Wing and its aerodynamic properties – wing section – development of airfoils, their marking and classification, structural, operational and technology requirements. High-lift devices. Lift distribution along wingspan, induced drag, total lift, drag and moments of finite span wing. Aerodynamic properties of aircraft – Stability requirements, aerodynamic forces equilibrium. Wing-body combination effects, lift, drag and moment of aircraft, drag polar in detail. Propulsion and its influence. Aerodynamic design and analysis of aircraft.

Learning outcomes of the course unit

Students will acquire the knowledge of aircraft aerodynamics. Students will be able to solve problems of flow around bodies-outer aerodynamics and problems of flow inside bodies-inner aerodynamics.

Prerequisites

Mathematics (differentiation and integral calculus, differential equations). Basic knowledge of physics, statics and dynamics. Knowledge of thermomechanics and hydromechanics.

Co-requisites

Not applicable.

Recommended optional programme components

Not applicable.

Houghton E. L., Carpenter P. W., Aerodynamics for Engineering Students
J. D. Anderson, jr.: Fundamentals of Aerodynamics, , 0
Bertin J. John, Aerodynamics for Engineers, Prentice Hall, 2002
Bertin J. John, Aerodynamics for Engineers, Prentice Hall, 2002

Planned learning activities and teaching methods

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

Participation at seminars and laboratory exercises is obligatory. Participation at lectures is voluntary. Course-unit credits will be awarded only if: - participation at practical exercises is greater than 11 of 14, - homework assignments are correctly elaborated and submitted, - report of laboratory measurement is submitted, - all problems presented at exercises are correctly finished.. Examination comprises written and oral parts. The written one consists of 2 problem solving (60 min). In the oral part students answer to 2 questions they have randomly chosen.. Final evaluation is the average value of all 4 partial results unless one of them was failed. If one result of 4 is failed, the final evaluation is also failed.

Language of instruction

English

Work placements

Not applicable.

Aims

Students at the end of the course will acquire the knowledge of basic laws of incompressible and compressible fluid flow. Applications for solving simple technical problems in branch of aircraft airfoils and wings are explained.

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

Student have to solve all problems presented at exercises. If presence at exercises is less then 50 % student has to compensate missed exercises individually.

Classification of course in study plans

• Programme M2E-A Master's

branch M-IND , 1. year of study, winter semester, 6 credits, compulsory

• Programme M2I-A Master's

branch M-STL , 1. year of study, winter semester, 6 credits, compulsory

• Programme M2I-Z Master's

branch M-STI , 1. year of study, winter semester, 6 credits, recommended

#### Type of course unit

Lecture

52 hours, optionally

Teacher / Lecturer

Syllabus

1. Fundamentals of fluid mechanics
1.1 Atmosphere and its properties
1.2 Fluid properties
1.3 Fundamental laws of fluid mechanics (recapitulate)
- fluid kinematics, dynamics, viscosity effects
2. Airfoil and its aerodynamic properties
2.1 Origination of aerodynamic forces – physical principle
2.2Aerodynamic forces and moments acting on body in moving fluid – mathematical model
2.3 Aircraft wing section in particular.
3. Finite wing and its aerodynamic properties
3.1 Wing section
3.2 Development of airfoil, marking and classification
3.3 Airfoil requirements
3.3.1 Aerodynamic properties
3.3.2 Operation and technology
3.3.3 Structural requirements
3.4 Finite wing
3.4.1 Lift distribution
3.4.2 Induced drag
3.4.3 Lift, drag and moment
4. Aerodynamic characteristics of complete aircraft
4.1 Stability requirements, aerodynamic forces equilibrium
4.2 Wing-body effects on lift and other aerodynamic properties
4.3 Lift, drag and moment of aircraft, drag polar in detail
4.4 Propulsion unit and its effect on aerodynamic properties of aircraft
4.4 Aerodynamic design and analysis of aircraft

seminars

11 hours, compulsory

Teacher / Lecturer

Syllabus

1. Aerodynamic coefficients, recalculation of results of measurement on aeroplane
2. International Standard Atmosphere
3. Incompressible fluid flow along stream line, measurement of flow velocity
4. Compressible 1D flow. Rocket motor, gas flow in nozzles
5. Joukowski's transformation and airfoils
6. Velocity and pressure distribution in potential vortex
7. Approximate methods of flow solution around airfoils
8. Boundary layer depths at flat plate
9. Recalculation of incompressible fluid flow at airfoil to subsonic speeds
10. Finite span wing, basic and additional lift distribution along span
11. Panel methods 2D und 3D

labs and studios

2 hours, compulsory

Teacher / Lecturer

Syllabus

1. Measurement of pressure distribution along airfoil surface in wind tunnel
2. Determination of lift coefficient value from pressure coefficent distribution

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