SIFT Army Aviation Study guides, Class notes & Summaries

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 ...

SIFT Army Aviation Information TestParasite Drag - correct answer A type of drag that constitutes total drag Governor - correct answer common to all turbine helicopters, but only on some piston powered helicopters? It varies by helicopter - correct answer Where is the horizontal reference datum located? Cyclic - correct answer The ___ position relative to the horizon determines the helicopter's travel and attitude 45 knots - correct answer When training for a rapid deceleration, in ...

SIFT Army Aviation InformationFour forces acting on a helicopter in flight. - correct answer Lift, Thrust, Weight, Drag Induced Drag - correct answer That part of the drag on an airfoil that arises from the development of lift. Parasite Drag - correct answer Drag from components that don't create lift. (Wheels, Fuselage) The Venturi Effect - correct answer The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a...

SIFT Army Aviation InformationA helicopter is: - correct answer A type of rotorcraft Helicopter turbine engines produce _________ thrust per pound than piston engines: - correct answer more The main forces acting on a helicopter are: - correct answer Lift, weight, thrust, and drag Helicopters typically have between __ and __ main rotor blade(s): - correct answer 2, 6 Depending on the type of helicopter, main rotor system components can include: - correct answer A stabilizer bar, uppe...

SIFT Army Aviation InformationWhat are the two types of engines in a helicopter, and which has the advantage? - correct answer Piston or Turbine. Turbine engines have more thrust per pound. The main body of a helicopter - correct answer Fuselage The system that converts the pilot's input into the flight controls to movement in the rotor blades: - correct answer Swashplate mechanical system Components of the rotor system: - correct answer Upper and lower swashplates Blade grips Contro...

SIFT Army Aviation SectionWhat part of a rotary-wing aircraft makes directional control possible? - correct answer The Swashplate Which of these US Army Helicopters is classified as tandem rotor? - correct answer CH-47 What is the preferred method of ground movement for helicopters on airports? - correct answer Air Taxi Which war became known as the helicopter war? - correct answer Vietnam War What type of helicopter design uses a ducted fan in place of a tail rotor to cancel torque ...

SIFT Army Aviation study guideA helicopter is - correct answer A type of rotorcraft Helicopter turbine engines produce _________ thrust per pound than piston engines: - correct answer more Helicopters typically have between __ and __ main rotor blade - correct answer 2, 6 Depending on the type of helicopter, main rotor system components can include - correct answer A stabilizer bar, upper and lower swashplates, counterweights, Pitch horns, teeter or coning hinges, blade grips, Pitch and...

SIFT Army Aviation questions with 100% correct answers graded A+ Airfoil - correct answer Blade that cuts through air so that air passes above and below it Top of an airfoil is ________ - correct answer Cambered Why is the top of an airfoil cambered? - correct answer To allow air to quickly get past the airfoil and create low pressure What happens to the air below the airfoil? - correct answer Has a shorter distance to travel and is slower, creating high pressure Lift - correct answ...

SIFT Army Aviation What gives a helicopter its lifting force? - correct answer Airfoil What is a "airfoil"? - correct answer A blade; it cuts through the air so it passes above and below it. The top of the airfoil is ____ . - correct answer curved What results in high pressure from the airfoil? - correct answer The air that goes below the airfoil has a shorter distacne to travel and is slower. The amount of lift depends on what things? - correct answer the material, the shape of t...

SIFT- Army AviationWhat gives a helicopter its lifting force? - correct answer Airfoil What is a "airfoil"? - correct answer A blade; it cuts through the air so it passes above and below it. The top of the airfoil is ____ . - correct answer curved What results in high pressure from the airfoil? - correct answer The air that goes below the airfoil has a shorter distacne to travel and is slower. The amount of lift depends on what things? - correct answer the material, the shape of th...