Q51) What is the purpose of ailerons on an aircraft’s wings?
A51) Ailerons control the roll motion of an aircraft by deflecting up or down, thereby enabling banking and turning maneuvers.
Q52) Explain the concept of angle of attack in aerodynamics.
A52) The angle of attack is the angle between the chord line of an airfoil and the direction of the oncoming airflow, influencing lift and drag characteristics.
Q53) What is the function of a turbofan engine’s bypass duct?
A53) The bypass duct in a turbofan engine directs a portion of airflow around the engine core, reducing noise and increasing efficiency.
Q54) Describe the operation of a ramjet engine.
A54) Ramjet engines compress incoming air through forward motion without the need for rotating compressor blades, relying on supersonic airflow for combustion and thrust.
Q55) What is the significance of the Reynolds number in fluid dynamics?
A55) The Reynolds number characterizes the flow regime of a fluid, influencing phenomena such as turbulence, boundary layer separation, and drag.
Q56) How do variable sweep wings enhance aircraft performance?
A56) Variable sweep wings allow for adjustable wing sweep angle, optimizing performance for different flight regimes, speeds, and mission requirements.
Q57) Explain the function of a thrust reverser on an aircraft’s engine.
A57) A thrust reverser redirects engine thrust forward upon landing, assisting in deceleration and braking on the runway.
Q58) What is the primary purpose of a stabilator on an aircraft’s tail?
A58) A stabilator provides longitudinal stability and control by combining the functions of a horizontal stabilizer and elevator.
Q59) Describe the principle behind the operation of a gyroscope in aircraft navigation.
A59) Gyroscopes maintain orientation reference for aircraft navigation systems by conserving angular momentum in a spinning rotor.
Q60) What is the function of a leading-edge slat on an aircraft wing?
A60) Leading-edge slats deploy at low speeds to increase lift and delay stall by altering the wing’s aerodynamic characteristics.
Q61) Explain the concept of thrust-to-weight ratio in aircraft performance.
A61) Thrust-to-weight ratio measures the ratio of engine thrust to aircraft weight, indicating the ability to accelerate vertically or perform maneuvers.
Q62) What role does the canard configuration play in aircraft design?
A62) Canards provide pitch control and stability, often allowing for maneuverability improvements in aircraft designs.
Q63) How does a spoiler contribute to aircraft control during flight?
A63) Spoilers disrupt airflow over the wing, decreasing lift and inducing controlled descent or roll motion for aircraft control.
Q64) Describe the function of an anti-skid braking system in aircraft.
A64) An anti-skid braking system prevents wheel lock-up during braking, maintaining directional control and reducing stopping distance on landing.
Q65) What is the function of a yaw damper in aircraft stability?
A65) A yaw damper reduces adverse yaw effects and stabilizes aircraft yaw motion, enhancing directional stability and control.
Q66) Explain the operation of a fly-by-wire flight control system.
A66) Fly-by-wire systems replace mechanical flight controls with electronic signals, offering precise, computer-mediated control of aircraft surfaces.
Q67) How do vortex generators improve aircraft aerodynamics?
A67) Vortex generators energize airflow over the wing, delaying stall and enhancing control effectiveness at low speeds.
Q68) Describe the function of a static port in aircraft instrumentation.
A68) A static port measures static pressure for instruments such as the altimeter and airspeed indicator, providing accurate readings of altitude and airspeed.
Q69) What is the role of a thrust reverser in jet engine performance?
A69) A thrust reverser redirects engine thrust forward upon landing, aiding in deceleration and reducing landing distance.
Q70) Explain the operation of a pneumatic de-icing system on an aircraft.
A70) A pneumatic de-icing system inflates rubber boots on leading edges to break and shed accumulated ice during flight.
Q71) What is the function of a yaw string on an aircraft’s windshield?
A71) A yaw string indicates sideslip angle by aligning with airflow, aiding pilots in maintaining coordinated flight.
Q72) Describe the principle behind the operation of an autopilot system.
A72) Autopilot systems automate aircraft control by following pre-programmed flight plans or maintaining specific flight parameters.
Q73) How does a yaw damper system improve flight stability?
A73) A yaw damper system reduces yaw oscillations and enhances aircraft stability by damping out unwanted yaw motions.
Q74) What is the function of a flap track fairing on an aircraft wing?
A74) A flap track fairing streamlines airflow and reduces drag around the wing’s flap mechanism, improving aerodynamic efficiency.
Q75) Explain the operation of a bleed air system in aircraft environmental control.
A75) A bleed air system extracts compressed air from the engine for cabin pressurization, air conditioning, and anti-icing systems.
