How can lift be defined ?
What is the main component for generating lift ?
How is the angle of attack defined ?
Lift is a function of what 4 elements ?
What factors are influencing the formula of lift ?
How can the equation of Bernulli be used for the definition of lift ?
Which 2 forces are exerting force the fluid on a body ?
Where does the total lift result from ?
How can it be calculated ?
What is the concept of circulation ?
What is the coanda effect ?
Generation of lift through circulation
How can the velocity and pressure be qualitively described on the upper and lower side of the wing?
Which two flows are generation lift through circulation by superposition ?
Name the Kutta-Joukowski theorem
What are the conditions for the Kutta theorem ?
Circulation distribution along the wingspan
To which is the local circulation (gamma) proportional ?
Distribution of the local lift coefficients along the wingspan
To which is the local lift coefficient CL proportional?
Give the physical explanation for lift ?
Physical explanation of lift
How is the downward force generated ?
What is meant by deflection of the flow ?
Name 3 physically false explanations for lift and describe them shortly !
Where does the lift of an airfoil result from and how can it be calculated ?
What is lift slope ?
What can be said about small and high angles of attack?
What else does lift slope depend on ?
How does the upper side of an airfoil and the pressure gradient dp/dx behaive whilst increasing angle of attack and increasing lift coefficient ?
From which factors are the maximum lift coefficient and stall behaviour mainly depend on ?
What is the Reynold number range of commercial aircraft ?
Which 2 effects overlap when maximum lift increases sharply with the Reynolds number ?
Name 3 different stall behaviours and the main influence on stall !
What is Trailing Edge Stall ?
When does Trailing Edge Stall occour ?
How can the curve of Trailing Edge Stall be pictured in a diagram ?
Shortly describe the mechanism !
What is Leading Edge Stall ?
When does Leading Edge Stall occour ?
What is Thin Airfoil Stall ?
When does Thin Airfoil Stall occour ?
How can the highest CL-max values for airfoils be generated ?
What must be taken into account by selecting the airfoil ?
Which other aspects must be taken into account by selecting an airfoil ?
What is the definition of high lift ?
What are the requirements for the high-lift system ?
What is the target of a high-lift system ?
High-lift system
What are the possiblities to increase the maximum lift coefficient ?
Which 4 different requirements must a high-lift system meet and what is special about the requirements ?
Which other aspects for a high-lift system have to be considered in the design ?
Which 2 operating principles can be used to achieve the target of high-lift systems ?
What influence has flap deflection on lift characteristics ?
What is the influence of flap deflection on the pressure distribution ?
Name 4 types of flaps which are different Trailing Edge Systems !
Order the different Trailing Edge Systems (Flap Types) in an CL / alpha diagram !
How can the lift gain theoretically be further increased ?
Multiple slotted flap
Name 4 different flap systems for commercial aircraft !
What is the problem and tendancy with aerodynamically advantagous high-lift systems ?
What is the Trade-Off in designing a Trailing Edge System ?
What is the operating principle of a Fixed Slat ?
What is the operating principle of a Moveable Slat ?
What is the influence of the slat deflection on the pressure distribution ?
Name 4 different flap types for Leading Edge Systems !
What are the differences between a Slat and Droop Nose ?
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