SIFT Army Aviation

what allows a helicopter to fly forward,backward, and laterally? - correct answer -helicopters are equipped with a source of thrust -an engine produces power and delivers it to overhead and tail rotor via one or more transmissions and drive shafts two types of helicopter engines - correct answer -piston -turbine (offers more thrust per pound) define fuselage - correct answer the main body of a helicopter or plane define cowling - correct answer shaped metal skin that covers the en...

SIFT Army Aviation Information SectionA Helicopter - correct answer Is a type of rotorcraft that is able to takeoff and land vertically, hover, and fly forward, backward, and side to side (laterally). Thrust engine - correct answer an engine that produces power and delivers it to overhead and tail rotors (on most helicopters) via one or more transmissions and drive shafts. Fuselage - correct answer Main Body of the helicopter Mast - correct answer Shaft protruding from the top Co...

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 answer Upward force created by the difference in air pressure above an...

SIFT Army AviationAirfoil - 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 answer Upward force created by the difference in air...

SIFT Army Aviation What are the 3 types of drag? - correct answer Parasite Drag, Induced Drag, Profile Drag Profile Drag - correct answer Type of drag caused by the separation of boundary layers and increased friction on airfoils. Dependent on the shape of the aircraft. Parasite Drag - correct answer Type of drag that acts on an object, creating friction when the object is moving through liquid (a.k.a, the atmosphere.) Induced Drag - correct answer Type of drag that occurs when airfoil...

The phenomenon of a helicopter sinking into its own downwash is called: A. L/Wmin (minimum lift-to-weight ratio). B. An airfoil stall. C. Vortex torque state. D. Settling with power. - correct answer D. Settling with power. A helicopter is: A. A type of gyrocraft B. A type of rotorcraft C. A category of rotary-wing airplanes D. A sub-group of gyrocopters - correct answer B. A type of rotorcraft Helicopter turbine engines produce _________ thrust per pound than piston engines: A...

Which of these is one of the three types of drag that constitute total drag? - correct answer Parasite. The force that resists the movement of a helicopter through the air and is produced when lift is developed is called drag. Drag must be overcome by the engine to turn the rotor. Drag always acts parallel to the relative wind. Total drag is composed of three types of drag: Profile, induced, and parasite Which of the following is common to all turbine helicopters, but is only on some pist...

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 ...

A Helicopter - correct answer Is a type of rotorcraft that is able to takeoff and land vertically, hover, and fly forward, backward, and side to side (laterally). Thrust engine - correct answer an engine that produces power and delivers it to overhead and tail rotors (on most helicopters) via one or more transmissions and drive shafts. Fuselage - correct answer Main Body of the helicopter Mast - correct answer Shaft protruding from the top Cowling - correct answer On the upper part o...

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...