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SIFT: Army Aviation Information Test First Law of Motion - correct answer an object at rest will stay at rest, an object will remain in motion unless acted upon by an unbalanced force such as gravity or friction Four Types of Friction - correct answer 1) sliding, kinetic friction 2) fluid fric...

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  • October 16, 2023
  • 13
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • sift army aviation information test

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  • SIFT Army Aviation
  • SIFT Army Aviation

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SIFT: Army Aviation Information Test
First Law of Motion - correct answer an object at rest will stay at rest, an object will remain in motion unless acted upon by an unbalanced force such as gravity or friction
Four Types of Friction - correct answer 1) sliding, kinetic friction
2) fluid friction
3) rolling friction
4) static friction
Sliding, Kinetic friction - correct answer results when the surface of one object slides along the surface of
another object
Fluid Friction - correct answer resistance on an object when it is moved through either gas or liquid
Rolling Friction - correct answer sliding friction except it is rolling
Static Friction - correct answer what keeps an object at rest when object is acted upon by external force
Second Law of Motion - correct answer when a body is acted upon by a constant force, its resulting
acceleration is inversely proportional to the mass of the body and directly proportional to
applied force
force = mass * acceleration
Third Law of Motion - correct answer if two objects interact, the force exerted by the first object on the
second object is equal in magnitude and opposite in direction to the force exerted by
second on the first Law of Universal Gravitation - correct answer a particle attracts every other particle in the universe
with a force that is directly proportional to the product of their masses and inversely
proportional to the square of the distance between them
F = G * (m1m2)/(D^2)
Bernoulli's Principle - correct answer within a horizontal flow of fluid, points of faster speed will
experience less pressure than points of slower fluid speed, curvature of airplane wings
causes air to pass faster over the top of the wing (creating a lower pressure area) than
under the wing (a higher pressure area) creating lift
Flight Envelope - correct answer encompasses the limits of speed, altitude, and angle of attack required by any aircraft
to maintain a stable flight
Angle of Attack - correct answer angle between the direction of the airflow against the wing (relative
wind) and the chord, imaginary reference line that extends from the leading edge to the
trailing edge of wing
Downwash - correct answer as air passes over the end of the wing, or over the end of the helicopter
rotor blade, it changes direction, and deflects the air downward
Drags during Flight - correct answer 1) Parasite Drag
2) Profile Drag
3) Induced Drag
Parasite Drag - correct answer any structure on the aircraft that increases turbulence on the aircraft

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