Sift aviation - Study guides, Class notes & Summaries

SIFT Army Aviation Information Practice Test Questions And Answers A helicopter is A type of rotorcraft Helicopter turbine engines produce ___________ thrust per pound than piston engines More The four main forces working on a helicopter are Lift, weight, thrust, drag Helicopters typically have between ___ and ___ main rotor blades 2 and 6 Depending on the type of helicopter, main rotor system components can include A stabilizer bar, upper/lower swashplates, counterweig...

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...

The typical structure of a helicopter is a ______ (fill in the blank) with a ____ (fill in the blank) protruding upward out of it. CORRECT ANSWER Fuselage (the body of the craft), Mast. The engine of the craft drives power upward through the ____ (fill in the blank) to the rotor blades, which are controlled by the pilot. CORRECT ANSWER Mast This main rotor is used to generate ____ (fill in the blank). CORRECT ANSWER Thrust. ____ (fill in the blank) is balanced by a second rotor, usually...

SIFT Army Aviation Information Written Exam 2024. What part decrease crosswind thrust on the blades and enhance flight stability by keeping the bar stable as the rotor spins - correct answer The flybar Helicopter turbine engines produce ___________ thrust per pound than piston engines - correct answer More The four main forces working on a helicopter are - correct answer Lift, weight, thrust, drag Helicopters typically have between ___ and ___ main rotor blades - correct answer 2 and...

Sift Aviation what is the preferred method of ground movement for helicopter on airports - correct answer air taxi what type of helicopter design uses a ducted fan in place of a tail rotor to cancel torque effect - correct answer the NOTAR how would high density altitude affect the performance of a helicopter - correct answer Performance would decrease due to low value of the air density which pitot static instrument makes use of both pitot and static preasure - correct answer airspeed...

SIFT Army Aviation Information Review Practice Test Exam 2024. A helicopter is A type of rotorcraft - correct answer A helicopter is A type of rotorcraft Helicopter turbine engines produce more thrust per pound than piston engines - correct answer Helicopter turbine engines produce more thrust per pound than piston engines The four main forces working on a helicopter are Lift, weight, thrust, drag. - correct answer The four main forces working on a helicopter are Lift, weight, thrust, dr...

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 Information Final Test Guide 2024. skidding - correct answer An aerodynamic condition, during a turn, where the tail of an aeroplane moves away from the centre of the turn or tends to follow a path which is outside that followed by the nose. slipping - correct answer an aerodynamic condition of uncoordinated flight in which an aeroplane moves towards the inside of a turn or is moving somewhat sideways as well as forward relative to the oncoming airflow. flapping - corre...

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...

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 ...