ENAE 410

"This one will be much harder than the practice final"

31 flashcards · Other · by Dylan Matwe

1. Slats Adding increases stall angle of attack increases cl max

2. Leading Edge Flaps Increases Clmax increases α stall

3. Flaps that increase Wing area

4. What is the purple one?

   Slotted Flap Air bleeding through delays seperation (acts like a slat)

5. Flaps, Increase lift by changing chape. Increases Clmax, decreases α a Clmax

6. What direction does the Horizontal Stab provide stability in

   roll

7. Empenage

   Tail Section

8. Name of axis along the wings

   Lateral Axis - Pitch Positive is Nose up

9. Axis going down

   Vertical Axis - Yaw Positive turning right

10. Axis going forward

    Vertical Longitutinal - Roll Positive rolling right

11. What direction does the rudder provide stability in

    yaw

12. Red

    Root Chord

13. Blue

    Tip Chord

14. Green + Purple

    1/4 chord line and 1/4 point

15. Taper Ratio

    Ratio between the root chord and the tip chord

16. Aspect Ratio

    Measure of wingspan to chord length AR=b2/SwAR = b^2/S_wAR=b2/Sw​

17. Dihedral angle

    Measure of the wings relative to the horizontal

18. Red

    Camber Line

19. Blue

    Thickness

20. What type of drag is associated with attached flow

    Friction Drag

21. What type of drag is associated with detached flow?

    Presure Drag

22. What type of airfoil is the purple line?

    Cambered

23. What type of airfoil is red?

    Symetric

24. Where does induced drag come from?

    Comes from the air velocity of the downwash changing the net flow direction, and pointing the resultant lift vector back (always normal to the air speed vector)

25. What does a C_d vs M graph look like?

26. What does a ClC_lCl​ vs MMM graph look like?

27. When is speed constrained by ClmaxC_{l max}Clmax​

    When we are below nmaxn_{max}nmax​

28. When does induced drag dominate?

    Low Speeds

29. When does parasitic drag dominate?

    At High Speeds