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AeE 419 Midterm Exam

Quiz by Sherwin Trinidad

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100 questions
Show answers
  • Q1
    A UAV designed for reconnaissance missions at high altitude requires an airfoil that minimizes drag while maintaining sufficient lift. Which airfoil characteristic is most suitable for this mission?
    A thick, highly cambered airfoil
    A blunt leading-edge airfoil
    A symmetric airfoil
    A thin, low-camber airfoil
    30s
  • Q2
    A UAV experiences excessive nose-down pitching moments during cruise flight. What modification would best address this issue?
    Increasing the horizontal stabilizer area
    Reducing the aspect ratio of the main wing
    Moving the center of gravity forward
    Increasing the dihedral angle of the main wing
    25s
  • Q3
    A UAV is designed to operate in gusty environments. What design feature would best reduce the impact of turbulence on stability?
    Low wing loading
    High aspect ratio wings
    A forward-swept wing design
    A small vertical stabilizer
    30s
  • Q4
    During a UAV’s approach to landing, the pilot notices excessive floating before touchdown. What is the most likely aerodynamic cause?
    Low coefficient of lift
    High wing loading
    High pressure drag
    Excessive ground effect
    25s
  • Q5
    A UAV is experiencing high fuel consumption and reduced endurance despite optimal aerodynamic design. Which factor could be contributing to this issue?
    Excessive wing taper ratio
    Improper center of gravity placement
    Overly large control surfaces
    Low aspect ratio
    30s
  • Q6
    A UAV is designed for maritime patrol and must maintain stable flight in high-wind conditions. Which design choice would best improve directional stability?
    Increasing the taper ratio of the wing
    Decreasing the horizontal stabilizer size
    Using a forward-swept wing
    Increasing the vertical stabilizer area
    30s
  • Q7
    A UAV designed for high-speed reconnaissance is experiencing high wave drag at transonic speeds. Which modification would best reduce this drag?
    Implementing area ruling on the fuselage
    Increasing the camber of the wing
    Using a high aspect ratio wing
    Adding large winglets
    25s
  • Q8
    A UAV designed for urban surveillance must perform frequent takeoffs and landings in constrained spaces. Which wing configuration would best suit this mission?
    High-speed airfoil with low camber
    Delta wing with no flaps
    Low aspect ratio with leading-edge slats
    High aspect ratio with no high-lift devices
    30s
  • Q9
    A UAV's performance degrades at high altitude due to reduced lift. What is the most effective solution to maintain level flight?
    Use a lower aspect ratio wing
    Increase dihedral angle
    Reduce angle of attack
    Increase flight speed
    25s
  • Q10
    A UAV is experiencing poor fuel efficiency despite an aerodynamically optimized design. Which non-aerodynamic factor is most likely contributing to this issue?
    Excessive payload weight
    Low Reynolds number effects
    Improper wing washout configuration
    Excessive taper ratio of the wings
    30s
  • Q11
    A UAV designed for high-speed interception missions requires rapid roll response. Which of the following design choices would best enhance roll agility?
    Increasing horizontal stabilizer area
    Reducing wingspan and increasing aileron size
    Using a high aspect ratio wing
    Increasing dihedral angle
    30s
  • Q12
    A UAV with a high-wing configuration is experiencing excessive lateral instability in crosswinds. What modification would best improve stability?
    Increasing the vertical stabilizer size
    Reducing the dihedral angle
    Increasing wing sweep
    Moving the wings to a mid-wing configuration
    25s
  • Q13
    A UAV mission requires long endurance at high altitudes where air density is low. What propulsion system would be most efficient?
    A piston engine with a variable-pitch propeller
    A turboprop engine
    A ducted fan electric motor
    A turbojet engine
    30s
  • Q14
    A UAV designed for operations in extremely cold environments is experiencing decreased battery efficiency. What design modification could best mitigate this issue?
    Using an onboard heating system for the battery
    Switching to a composite airframe
    Reducing control surface deflections
    Increasing the dihedral angle of the wings
    25s
  • Q15
    A UAV flying at high subsonic speeds is experiencing excessive drag despite an optimized airfoil shape. What aerodynamic issue is most likely causing this?
    A symmetric airfoil generating excessive lift
    High aspect ratio increasing induced drag
    Shockwave formation due to transonic effects
    High dihedral angle increasing pressure drag
    30s

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