Unit 3: Study of Fly vehicle nomenclature - Practice Quiz

1 What is the main body of an aircraft called?

2 Where does the pilot normally control an aircraft?

3 Which aircraft component primarily produces lift during forward flight?

4 What is the tail assembly of an aircraft commonly called?

5 Which control surface usually controls an aircraft's roll?

6 Which control surface primarily controls pitch?

7 Which control surface primarily controls yaw?

8 What is the main lifting component of a helicopter?

9 What is the usual purpose of a propeller?

10 Which part provides directional stability at the aircraft's tail?

11 What does the wingspan of an aircraft measure?

12 What is the chord of a wing?

13 What is an airfoil?

14 In a high-wing configuration, where is the wing attached?

15 How many main wing planes does a monoplane have?

16 What does positive wing dihedral mean?

17 What is a swept-back wing?

18 Which wheels are found in a tricycle landing gear configuration?

19 Where is the small wheel located on a taildragger aircraft?

20 What is a key purpose of retractable landing gear?

21 During a coordinated turn, which primary control surfaces produce the aircraft's rolling motion?

22 An aircraft pitches upward whenever the pilot pulls back on the control column. Which component is primarily creating this response?

23 What is the main function of a helicopter's swashplate?

24 A semi-monocoque fuselage must resist bending without excessive structural mass. Which members mainly run lengthwise and help carry these loads?

25 An aircraft begins yawing left after an engine failure. Which empennage surface is directly used to oppose this yaw?

26 Why are large transport-aircraft engines commonly enclosed in streamlined nacelles?

27 Compared with a conventional airplane, a flying-wing aircraft eliminates which major assembly?

28 Which feature distinguishes a flying boat from a conventional floatplane?

29 A designer increases a wing's dihedral angle while leaving other features unchanged. Which behavior is most likely to increase?

30 Why is wing sweep commonly used on aircraft designed for high-subsonic flight?

31 Two wings have equal area and lift coefficient, but Wing A has a higher aspect ratio. At the same operating condition, Wing A will generally have:

32 A wing model has half the full-scale wing chord and is tested at the same airspeed in air of the same density and viscosity. Its Reynolds number will be:

33 A tapered wing tends to stall near its tips before its root. Which modification can help preserve aileron effectiveness near the stall?

34 If air density, speed, wing area, and lift coefficient remain unchanged, what happens to lift when speed is doubled?

35 Why does a high-wing cargo aircraft often provide better ground-loading access than a comparable low-wing aircraft?

36 Which operational advantage does tricycle landing gear generally provide over conventional tailwheel gear?

37 A designer replaces fixed landing gear with retractable gear on a fast aircraft. What is the main aerodynamic benefit?

38 An aircraft uses tandem landing gear units aligned along the fuselage centerline. Why are small outrigger wheels often added near the wings?

39 Increasing the lateral distance between the main landing-gear wheels primarily improves:

40 For a tricycle-gear aircraft to rotate normally during takeoff, where should the main landing gear be positioned relative to the center of gravity?

41 A conventional aircraft is retrimmed in level flight after its center of gravity moves aft, while remaining ahead of the neutral point. Assuming the horizontal tail normally produces downforce, which combined effect is expected?

42 For a statically stable canard aircraft, which stall sequence is generally required to provide an inherent nose-down recovery tendency?

43 Why is a T-tail aircraft particularly susceptible to a deep-stall condition at very high angle of attack?

44 A tailless flying wing must generate a yawing moment without a conventional rudder. Which device most directly provides this control while producing little symmetric pitching input?

45 In a conventional helicopter rotor head, what is the primary function of tilting the non-rotating swashplate?

46 On a twin-engine tiltrotor with an interconnecting cross-shaft, why can one operating engine potentially drive both proprotors after the other engine fails?

47 What is the principal hydrodynamic purpose of the step in the hull of a flying boat during takeoff?

48 Which load-sharing description best represents a semi-monocoque aircraft fuselage under bending and torsion?

49 A twin-boom aircraft has a horizontal stabilizer spanning between the aft ends of both booms. What is the primary structural path for a symmetric stabilizer load?

50 Why is designing a large pressurized passenger cabin inside a blended-wing-body aircraft generally more difficult than designing one inside a cylindrical fuselage?

51 A linear longitudinal model about the center of gravity gives and . If the center of gravity is at , where is the neutral point?

52 Using , estimate the finite-wing lift-curve slope for , , and .

53 An aircraft has clean . Extending the landing gear adds . At , , and , what total drag coefficient is predicted by ?

54 In a strip-theory model, all wing sections have the same critical section angle of attack and induced angle. If the wing has of washout from root to tip, which stall progression does the model predict?

55 A straight tapered wing has root chord and taper ratio . Using , what is its mean aerodynamic chord?

56 For a wing operating near the ground at fixed lift coefficient, which change should an image-vortex aerodynamic model predict relative to flight far from the ground?

57 A tricycle-gear aircraft weighs . The main gear is aft of the center of gravity, and the nose gear is forward of it. What are the static nose-gear and total main-gear reactions?

58 The main-gear contact point is aft of the center of gravity, whose height is . If the required ground rotation angle is , what does the tip-back geometry indicate?

59 Why can a taildragger exhibit a divergent ground loop after a small yaw disturbance during its landing roll?

60 In a bicycle landing-gear configuration with forward and aft centerline units plus small wingtip outriggers, what is the primary structural role of the outriggers?