Army aviation Study guides, Class notes & Summaries

SIFT Section 3 Army Aviation Information Correctly Answered Exam 2024. 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 pla...

SIFT Army Aviation Final Test Guide Exam 2024. 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 cr...

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 INFORMATIONA 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 Helicopter turbine engines produce ___ thrust per pound than piston engines: A. less B. the same C. more D. the same, but only after factoring in the effect of density altitude - correct answer c The main forces acting on a helicopter are: A. Induced lift, mass, thrust, and form drag. B. Lift, ...

SIFT Test (Army Aviation Information Practice Test) 2024 Updated.A helicopter is: A. A type of gyrocraft. B. A type of rotorcraft. C. A category of rotary-wing airplanes. D. A sub-group - correct answer B. A type of rotorcraft. Helicopter turbine engines produce ___________ thrust per pound than piston engines: A. less. B. the same. C. more. D. the same, but only after factoring n the effect of density altitude. - correct answer C. more. The main forces acting on a helicop...

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...

SIFT- Army Aviation question well answered 2023What 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 t...

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...

The typical structure of a helicopter is a ______ (fill in the blank) with a ____ (fill in the blank) protruding upward out of it. - 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. - Answer- Mast This main rotor is used to generate ____ (fill in the blank). - Answer- Thrust. ____ (fill in the blank) is balanced by a second rotor, usually a tail rotor, ...