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COMMERCIAL GROUND FINAL EXAM 2025 QUESTIONS AND ANSWERS What condition will cause an airfoil to stall? - ....ANSWER ...-The critical angle of attack is exceeded. What condition describes best glide speed? - ....ANSWER ...-The speed at which total drag on the aircraft is at a minimum. How does an airfoil produce lift? - ....ANSWER ...-An airfoil bends air over the upper surface and deflects it downward at the trailing edge as downwash, the action of the downwash creates the equal and opposite reaction of lifting the airfoil up. Which best describes the flight control characteristics of an aircraft designed to have negative static lateral stability? - ....ANSWER ...-Once the aircraft is rolled in either direction the aircraft will continue to roll in that direction until stopped. Which of the following best describes ground effect? - ....ANSWER ...-The ability to fly within about a wingspan of the surface at a reduced airspeed due to the reduced affects of upwash, downwash and wingtip vortices. ...COPYRIGHT ©️ 2025, ALL RIGHTS RESERVED..... 100% PASS RATE... 1