Principles Of Flight Leave a reply 0% Principles Of Flight 1 / 20 1. Q23 Which statement about lift and angle of attack is correct? A) Increasing the angle of attack results in less lift being generated by the aerofoil B) Increasing the angle of attack too far may result in a loss of lift and an airflow separation C) Decreasing the angle of attack results in more drag being generated by the aerofoil D) Too large angles of attack can lead to an exponential increase in lift 2 / 20 2. Q77 What has to be considered with regard to the center of gravity position? A) By moving the elevator trim tab, the center of gravity can be shifted into a correct position. B) The center of gravity’s position can only be determined during flight. C) Only correct loading can assure a correct and safe center of gravity position. D) By moving the aileron trim tab, the center of gravity can be shifted into a correct position. 3 / 20 3. Q43 In which mentioned situation is the total drag at its minimum? A) Induced drag is twice as much as parasite drag B) Parasite drag is equal to induced drag C) Induced drag is smaller than parasite drag D) Parasite drag is twice as much as induced drag 4 / 20 4. Q10 The center of pressure is the theoretical point of origin of… A) gravity and aerodynamic forces. B) gravity forces of the profile. C) only the resulting total drag. D) all aerodynamic forces of the profile. 5 / 20 5. Q58 A take-off with flaps in take-off position causes… A) a shortening of the take-off run. B) an increased rate of climb. C) a decrease in drag. D) an increased acceleration. 6 / 20 6. Q96 Point number 5 in the figure indicates which flight state? See figure (PFA-008)Siehe Anlage 5 A) Stall B) Inverted flight C) Best gliding angle D) Slow flight 7 / 20 7. Q15 Which point on the aerofoil is represented by number 3? See figure (PFA-009)Siehe Anlage 2 A) Transition point B) Stagnation point C) Separation point D) Center of pressure 8 / 20 8. Q49 What leads to a decreased stall speed Vs (IAS)? A) Decreasing weight B) Higher load factor C) Lower density D) Lower altitude 9 / 20 9. Q65 Which statement describes a situation of static stability? A) An aircraft distorted by external impact will maintain the deflected position B) An aircraft distorted by external impact can return to its original position by rudder input C) An aircraft distorted by external impact will return to the original position D) An aircraft distorted by external impact will tend to an even more deflected position 10 / 20 10. Q61 The laminar boundary layer on the aerofoil is located between… A) the stagnation point and the transition point. B) the transition point and the center of pressure. C) the stagnation point and the center of pressure. D) the transition point and the separation point. 11 / 20 11. Q85 Which constructive feature has the purpose to reduce stearing forces? A) Vortex generators B) Differential aileron deflection C) T-tail D) Aerodynamic rudder balance 12 / 20 12. Q19 What pattern can be found at the stagnation point? A) All aerodynamic forces can be considered as attacking at this single point B) The boundary layer starts separating on the upper surface of the profile C) The laminar boundary layer changes into a turbulent boundary layer D) Streamlines are divided into airflow above and below the profile 13 / 20 13. Q93 After an engine failure, the windmilling propeller… A) generates drag rather than thrust. B) generates neither thrust nor drag. C) improves the properties of the glide. D) has a greater pitch in feathered position. 14 / 20 14. Q30 When increasing the airflow speed by a factor of 2 while keeping all other parameters constant, how does the parasite drag change approximately? A) It increases by a factor of 4 B) It increases by a factor of 2 C) It decreases by a factor of 2 D) It decreases by a factor of 4 15 / 20 15. Q55 With regard to flaps, which of the following options provides a lift-increasing effect? A) Decreasing the form drag B) Lowering the induced drag C) Decreasing the angle of attack D) Increasing the aerofoil camber 16 / 20 16. Q51 In motorplanes the stall warning is usually activated by a change of… A) the center of gravity. B) the transition point. C) the stagnation point. D) the center of pressure. 17 / 20 17. Q95 Point number 1 in the figure indicates which flight state? See figure (PFA-008)Siehe Anlage 5 A) Inverted flight B) Slow flight C) Best gliding angle D) Stall 18 / 20 18. Q21 The position of the the center of pressure at a positively shaped profile… A) is located at approximately 25% of the chord, measured from the leading edge. B) does not move since it is independent of the angle of attack. C) moves to the trailing edge while the angle of attack becomes smaller. D) moves to the leading edge while the angle of attack becomes smaller. 19 / 20 19. Q90 Through which factor listed below does the load factor increase during cruise flight? A) Higher aeroplane weight B) An upward gust C) A forward centre of gravity D) Lower air density 20 / 20 20. Q39 How do induced drag and parasite drag change with increasing airspeed during a horizontal and stable cruise flight? A) Parasite drag decreases and induced drag increases B) Parasite drag decreases and induced drag decreases C) Induced drag increases and parasite drag increases D) Induced drag decreases and parasite drag increases Your score is 0%