Sift aviation - Study guides, Class notes & Summaries

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 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...

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...

When generating lift, what should the pressure below the airfoil be in relation to the pressure above the airfoil? CORRECT ANSWER greater than it what is the load factor of a 2000 pound helicopter that is currently experiencing an effective load of 4000 pounds? CORRECT ANSWER 2 What type/types of drag increases as the speed increases? CORRECT ANSWER parasitic drag and profile drag which of the following decreases upon an increase to the collective pitch controller? CORRECT ANSWER RPM ...

SIFT Test Army Aviation Information Study Guide Test 2024. Helicopter structure - correct answer fuselage (body of aircraft), mast, rotor blades engine drives power up through mast to rotor blades main rotor generates thrust, tail rotor counteracts torque main rotor rotates counterclockwise (US, UK, Ger.) advantages of rotorcraft - correct answer rotor blades (produce lift w/o requiring helicopter to move forward) provide the ability to takeoff vertically, hover in one place, and ta...

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...

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 Information Questions Correctly Answered 2024. Which of these is one of the three types of drag that constitute total drag? - correct answer Parasite. Which of the following is common to all turbine helicopters, but is only on some piston powered helicopters? - correct answer Governors Where is the horizontal reference datum located? - correct answer Varies per helicopter manufacturer. Its an imaginary vertical plane or point arbitrarily fixed somewhere along the longit...

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 piston...

When generating lift, what should the pressure below the airfoil be in relation to the pressure above the airfoil? - correct answer greater than it what is the load factor of a 2000 pound helicopter that is currently experiencing an effective load of 4000 pounds? - correct answer 2 What type/types of drag increases as the speed increases? - correct answer parasitic drag and profile drag which of the following decreases upon an increase to the collective pitch controller? - correct answe...