Flight Mechanics MCQ

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

• Final velocity at the end of the landing phase will be ____________
  ক

  zero

  খ

  same as Approach speed

  গ

  touchdown speed

  ঘ

  same as climb rate
• Determine the value of FAR field length. Consider approach of 100 ft., flare of 120 feet and ground roll of 600ft.
  ক

  1366.12

  খ

  109

  গ

  600

  ঘ

  700
• Find the required average velocity during flare for military aircraft if stall speed is 45 unit.
  ক

  51.75 unit

  খ

  60 unit

  গ

  45 unit

  ঘ

  100 unit
• For military aircraft touchdown speed is 100 knots then, approximate value of stall speed.
  ক

  90.90

  খ

  100

  গ

  200

  ঘ

  223
• If stall speed is 120 knots then, find average velocity at flare.
  ক

  147.6

  খ

  120

  গ

  110

  ঘ

  567
• Find the required amount of touchdown speed if stall speed is 100knots.
  ক

  115 knot

  খ

  120 knot

  গ

  100 knot

  ঘ

  99.2 knot
• Find the approach speed for military aircraft. Considered stall speed is 22unit.
  ক

  26.4 unit

  খ

  20 m

  গ

  12 ft

  ঘ

  45 unit
• Find the approach speed if, stall speed is 12 unit.
  ক

  15.6 unit

  খ

  12 unit

  গ

  10 unit

  ঘ

  1 unit
• The distance shown by ‘?’ in the following diagram is termed as __________
  ক

  flare distance

  খ

  loiter

  গ

  cruise

  ঘ

  climb
• The segment marked by ‘?’ in following diagram is showing _____
  ক

  approach

  খ

  climb

  গ

  takeoff

  ঘ

  cruise
• Find the horizontal distance travelled during transition segment. Consider radius of transition arc is 2km and thrust loading is 0.6 and L/D is 5.
  ক

  800m

  খ

  8000m

  গ

  80m

  ঘ

  0.80m
• If Stall speed is 140fps then, find approximate radius of transition arc.
  ক

  4018 feet

  খ

  5015 km

  গ

  1m

  ঘ

  10cm
• If climb speed during takeoff is 120 unit then, find stall speed.
  ক

  100knots

  খ

  240knots

  গ

  1267knots

  ঘ

  215knots
• Find the average velocity at transition if, stall speed is 15 unit.
  ক

  17.25 unit

  খ

  19 unit

  গ

  30 unit

  ঘ

  45 unit
• Find liftoff distance for an aircraft which has weight of 20kN and thrust of 8kN. Consider thrust is much larger than drag and friction parameters. Consider maximum lift coefficient of 1.1, reference area of 12m2 and sea-level density.
  ক

  454m

  খ

  1000m

  গ

  12m

  ঘ

  12.12m
• If our design has takeoff velocity of 120 knots then, at which value of stall speed we should design our aircraft?
  ক

  109.08knots

  খ

  110 knots

  গ

  150 knots

  ঘ

  125 knots
• If stall speed of the aircraft is 10m/s then, find the approximate value of takeoff speed.
  ক

  11m/s

  খ

  1m/s

  গ

  9m/s

  ঘ

  7m/s
• Determine the acceleration of an aircraft which is in ground roll segment. Consider weight of the aircraft as 150kN, thrust as 110kN and drag as 10kN. Assume weight on the wheels as 60kN and rolling friction as 0.05.
  ক

  5.68 m/s2

  খ

  100kN

  গ

  100 m

  ঘ

  3.5689 Kg*m/s
• Which of the following is not part of takeoff?
  ক

  Ground roll

  খ

  Transition

  গ

  Climb

  ঘ

  Descending
• If flow has Mach number of 1.2 then, determine the ratio of total and external flow dynamic pressure.
  ক

  2.4

  খ

  1

  গ

  3.8

  ঘ

  5.6
• Determine total pressure if static pressure is 1600psf and Mach number is 1.8. Consider flow of air.
  ক

  9193.2 psf

  খ

  1000 psf

  গ

  3450 psf

  ঘ

  7892 psf
• Consider external flow dynamic pressure as 2000psf and static pressure as 800psf. find the approximate value of Mach number.
  ক

  1.9

  খ

  5

  গ

  4.5

  ঘ

  2.78
• Determine static pressure if external flow dynamic pressure is 1800psf and flow has Mach number of 2.
  ক

  642.857psf

  খ

  1000psf

  গ

  2400 psf

  ঘ

  4673 psf
• If static pressure of flow is 1200psf and operating Mach number is 1.19 then, determine the external flow dynamic pressure.
  ক

  1189.52 psf

  খ

  12.89 psf

  গ

  112 psf

  ঘ

  2587 psf
• Operating envelope is also known as ________
  ক

  flight envelope

  খ

  fly by wire

  গ

  stall speed diagram

  ঘ

  lift curve
• The highest altitude where Ps is zero is called ________
  ক

  absolute ceiling

  খ

  drag polar

  গ

  geometric height

  ঘ

  geometric altitude
• The level flight envelope is determined by ________
  ক

  stall limit lines and from zero specific power

  খ

  wing aileron size

  গ

  spoilers area

  ঘ

  tail area
• Falling diagram represents _________
  ক

  operating envelope

  খ

  lift curve

  গ

  tire sizing

  ঘ

  empty weight diagram
• If a Maneuver requires specific power of 1200 unit then, find the approximate value of fuel specific energy. Given thrust as 1000 unit and tsfc of 0.00042 unit.
  ক

  2857.14 unit

  খ

  1568.45 unit

  গ

  4500 unit

  ঘ

  6789 unit
• Find the approximate value of time required to change energy height. Consider change in energy height is 250m and specific power for the operation is 100m/s.
  ক

  2.5s

  খ

  4.5min

  গ

  2.5hr

  ঘ

  2.59min