Nife aero - Study guides, Class notes & Summaries

NIFE - Aero Review Questions with Correct Answers What is density? - ANSWER-rho (ρ) - mass per unit of volume What happens to density if you increase humidity? - ANSWER-Density decreases (inverse relationship) What's a moment? - ANSWER-Rotational force around a point. What is a moment arm? - ANSWER-Distance from the force. How do you find the moment? - ANSWER-Force x Distance What is static pressure? - ANSWER-The amount weight/air molecules above you. What is the gas law? - ANSWER-P...

Define Vector - Answer-A quantity that expresses both magnitude and direction. A vector quantity is represented by an arrow that displays direction and has a length proportional to magnitude Moment - Answer-Force applied at some distance from an axis or fulcrum F x d (Distance: from the point of rotation that is perpendicular to force, "moment arm") Equilibrium Flight - Answer-When the sum of all FORCE and all MOMENTS around the COG are equal to zero When are the four forces that ac...

Define a vector - Answer-magnitude and direction ex) displacement, velocity, acceleration or foce Define a moment - Answer-A tendency to cause rotation around a point. (F x d). Also called torque. Define moment arm - Answer-Perpendicular distance from the line of action of the force to the fulcrum State the requirements for an airplane to be in equilibrium flight - Answer-Equilibrium flight exists when the sum of all forces and the sum of all moments around the CG are equal to zero. ...