What does the term “elasticity” refer to in materials science? A) The ability of a material to return to its original shape after deformation B) The ability of a material to conduct electricity C) The ability of a material to resist corrosion D) The ability of a material to absorb heat Answer: A) The ability … Read more
What is the primary effect of boundary layer separation on aerodynamic performance? a) Increased lift b) Decreased drag c) Increased drag and loss of lift d) No effect Answer: c) Increased drag and loss of lift Which aerodynamic phenomenon occurs when the airflow over the wing reaches the speed of sound? a) Boundary layer separation … Read more
What is the primary focus of aeroelasticity in aeronautical engineering? A) Aircraft propulsion systems B) Interaction between aerodynamic forces and structural responses C) Flight control systems D) Navigation systems Answer: B) Interaction between aerodynamic forces and structural responses 2. Which phenomenon occurs when the aerodynamic forces cause a structure to deform and then further influence … Read more
Which material is most commonly used for the primary structure of commercial aircraft? a) Titanium b) Aluminum c) Steel d) Carbon Fiber Answer: b) Aluminum What is the primary advantage of using composite materials in aerospace structures? a) High thermal conductivity b) High strength-to-weight ratio c) Low cost d) High density Answer: b) High strength-to-weight … Read more
What is the primary purpose of the wing in aircraft design? a) To house the engines b) To provide lift c) To store fuel d) To support the landing gear Answer: b) To provide lift Which of the following materials is commonly used in modern aircraft structures due to its high strength-to-weight ratio? a) Steel … Read more
What is the primary function of a control surface in an aircraft? A) To provide thrust B) To manage aerodynamic forces C) To increase fuel efficiency D) To control altitude Answer: B) To manage aerodynamic forces 2. Which system is used to reduce drag on an aircraft during high-speed flight? A) Airbrakes B) Winglets C) … Read more
What speed range characterizes hypersonic vehicles? a) Mach 1-3 b) Mach 3-5 c) Mach 5-10 d) Mach 10-20 Answer: c) Mach 5-10 Which of the following is a primary challenge in hypersonic vehicle design? a) Low drag at low speeds b) Thermal protection c) Structural integrity at subsonic speeds d) Aerodynamic stability at low speeds … Read more
What speed is classified as hypersonic? A) Mach 5 and above B) Mach 3 to Mach 5 C) Mach 2 to Mach 3 D) Subsonic speeds Answer: A) Mach 5 and above 2. Which principle is primarily used to design hypersonic vehicles? A) Airbreathing propulsion B) Rocket propulsion C) Electromagnetic propulsion D) Gas turbine propulsion … Read more
What is the primary principle behind ion engines? A) Electromagnetic acceleration of ions B) Chemical reaction C) Thermal expansion D) Fluid dynamics Answer: A) Electromagnetic acceleration of ions 2. Which component in an ion engine generates the ionized gas? A) Ionization Chamber B) Anode C) Cathode D) Grid Answer: A) Ionization Chamber 3. What is … Read more
Which of the following is a primary type of electric propulsion system used in spacecraft? A) Hall Effect Thruster B) Solid Rocket Motor C) Liquid Rocket Engine D) Hybrid Rocket Answer: A) Hall Effect Thruster 2. What principle does a Hall Effect Thruster use to generate thrust? A) Electromagnetic acceleration of ions B) Chemical reaction … Read more