Name 7 requirements for the airfoil !
What are the properties of symmetrical airfoils ?
What does increasing or variing of the airfoil thickness, location of maximum thickness, nose radius or the transition location influence in the properties of an airfoil ?
What is the use of symmetrical airfoils ?
What are special properties of symmetrical airfoils according to pressure distribution ?
What are properties of cambered airfoils ?
What are influencing variables for cambered airfoils and what are they affecting ?
What is the use of cambered airfoils ?
What are NACA airfoils and what are the 1st, 2nd, 3rd and 4th digits describing ?
What is the use of NACA airfoils ?
What is the motivation, application and the target of laminar airfoils ?
What are the 2 methods for lamilarization and how can they be described shortly ?
What were the problems in the developement of first laminar airfoils and how were they solved ?
Which problems are remaining until today ?
What are the characteristics and difficulties of laminar airfoils ?
How can friction drag be reduced ?
Order a laminar, a fully turbulent and a laminar-turbulant graph in a diagram ?
What description do the axises have ?
What are the differences between a laminar airfoil and a conventional airfoil ?
What is the influence of the position of max. thickness on the pressure distribution ?
What is the target in the developement of transonic airfoils ?
What are the geometrical features of transonic airfoils ?
What are the differences between a transonic and a conventional airfoil ?
Name 2 advantages and 2 disadvantages of transonic airfoils !
What are the geometrical features of supersonic airfoils ?
What are 3 flow characteristics of supersonic airfoils ?
Name 2 advantages and 1 disadvantage of supersonic airfoils !
What are the characteristics of hypersonic airfoils ?
How are hypersonic airfoils influenced by shocks ?
Where do the shocks occour ?
Where do shocks occour at hypersonic airfoils ?
How are the airfoils for reentry objects like the space shuttle built ?
Where does the shock bow occour ?
In which 5 points does a real, swept wing of finite aspect ratio/wingspan differ in its performance characteristics from those of a wing airfoil ?
What ist the target in the procedure of wing design ?
Name 5 issues !
How can the procedure be described ?
How can the design problem of a wing be solved ?
Wing Parameters
What is the Aspect Ratio ?
Give the formula !
Name 2 advantages and 3 disadvantages of a high aspect ratio !
What does sweep describe ?
What can be used as a reference line ?
Name 2 disadvantages of highly swept wings !
What is the Taper Ratio ?
Name a positive and a negative aspect of a high Taper Ratio (lamda > 0) according to the lift distribution !
What is desired by selecting the Taper Ratio ?
What is Twist ?
How can Twist be used to selectively influence the lift distribution of the wing ?
Which 2 types of Twist are existing ?
What is Dehedral ?
On which assumptions is the dehedral angle of a wing based ?
Control surfaces
How are control surfaces be considered in the wing design ?
Name some control surfaces for example …
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