Rubber-Engine Sizing MCQ

Test your knowledge with important Rubber-Engine Sizing MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Rubber-Engine Sizing MCQs at Bissoy

• If supersonic aircraft has fuel fraction of 0.937 as climb and accelerating segment fuel fraction then, find the cruise mach number. Consider aircraft is accelerating from 0.1M.
  ক

  2.0

  খ

  30.5

  গ

  5

  ঘ

  1.4
• A jet fighter is designed to operate at maximum mach of 2.0. Which of the following is approximated value for empty weight fraction if rubber engine sizing is used? Given, W0 = 20000lb, AR = 5, thrust loading T.L. = 0.6 and wing loading W.L. is 25.
  ক

  0.8109

  খ

  0.8532

  গ

  0.526

  ঘ

  0.3562
• An aircraft is climbing and accelerating to reach the cruise mach number of 0.75. If aircraft is accelerating from 0.1M then, what will be the mission segment fuel fraction for this mission?
  ক

  0.9821

  খ

  0.9258

  গ

  0.5289

  ঘ

  0.28958
• For a given rubber engine, determine fuel burn at combat if combat time is 2.5min.
  ক

  2.5*C*T unit

  খ

  2.5

  গ

  2.89 unit

  ঘ

  2.63 kg
• A general aviation single engine aircraft has gross weight of 2800lb. The aircraft has maximum speed of 130mph. Determine the approximated value of empty weight fraction if, aspect ratio AR is 9, wing loading is 15 and power loading is 12.
  ক

  0.5476

  খ

  0.6457

  গ

  0.8962

  ঘ

  0.9028
• For mission with payload drop, the take-off gross weight W0 is given by ____
  ক

  W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel + Wempty

  খ

  W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel

  গ

  W0 = Wcrew + Wdropped payload + Wfixed payload + Wempty

  ঘ

  W0 = Wcrew + Wdropped payload + Wfuel + Wempty
• What is rubber engine?
  ক

  Engine can be rubberized for sizing

  খ

  Engine made from rubber

  গ

  Engine is natured rubber

  ঘ

  High strength rubber engine
• The rubber engine can be sized for any thrust so we can have desired thrust loading.
  ক

  True

  খ

  False
• As weight varies, rubber engine _______
  ক

  can be scaled accordingly

  খ

  cannot be scaled accordingly

  গ

  remain fix

  ঘ

  will change as half always
• We can provide sizing based on new design only.
  ক

  True

  খ

  False
• Process of determining the take-off gross weight and required fuel weight is called as ________
  ক

  aircraft sizing

  খ

  aircraft Lofting

  গ

  aircraft drafting

  ঘ

  aircraft drawing