Ift study guide - Study guides, Class notes & Summaries

IFT STUDY GUIDE PART 1...

The four forces acting on helicopter in forward flight are...? correct answers Thrust, drag, weight, lift Bernoulli's Principle or the "venturi effect" correct answers As air flows over upper surface of airfoil, camber (curvature) of airfoil causes increase in speed of airflow which decreased pressure. Pressure is increased on bottom and this gives lift. Newtons Third Law of Motion and how it applies to helicopters correct answers "for every action there is an equal and opposite reacti...

Newton's First Law (Law of Inertia) correct answers An object in motion (or at rest) will tend to stay in motion (or at rest) until it is acted upon by an outside force. Interia correct answers The tendency of an object to resist a change in velocity whether the object is in motion or motionless kinetic friction correct answers when the surface of one object slides along the surface of another object, static friction overcome. size of the friction force increases with an object's weight....

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What is the topic of the paragraph above? a. Aircraft propulsion is a difficult concept to understand. b. External forces must cancel each other out in order for an aircraft to fly. c. An aircraft that remains at a constant velocity will remain at a constant altitude as well. d. Aircraft propulsion involves two objectives involving the laws of motion. e. Thrust must exceed drag ion order for an aircraft to accelerate correct answers d. Aircraft propulsion involves two objectives involvin...

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SIFT STUDY GUIDE PRACTICE QUESTIONS: ARMY AVIATION EXAM...

A helicopter is a type of...... correct answers Rotorcraft What are the three types of helicopters? correct answers single main rotor helicopters, tandem rotor helicopters, and coaxial rotor helicopters What is the most common design for a helicopter? correct answers single main rotor helicopter What is a disadvantage of the single main rotor helicopter? correct answers some power is used for countering torque, instead of just lifting What are some advantages of tandem rotor helicopt...

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