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54 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is Aerodynamics?
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The study of forces and the resulting motion of objects through the air
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None
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What are the 4 primary forces of flight?
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Lift, Weight, Thrust, Drag
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None
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What does aerodynamics allow?
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Allows heavier then air vehicles to fly.
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None
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How do the 4 primary forces counteract?
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Lift is counteracted by weight; thrust is counteracted by drag
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None
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What is lift?
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The force that holds an aircraft in air
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Where can lift be generated from?
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Anywhere but mostly from the wings.
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What does the cross section of a wing show?
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that the wing is in the sahpe of an airfoil
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How is the structure of the wind determined?
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By the mission of the aircraft
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Which types of aircraft tend to have larger and thicker wings? Why?
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Transports and bombers. They need more lift cuz they are heavier.
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How are stability and maneuverability related (wings)?
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An increase in one causes a decrease in the other
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What is AOA?
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Angle of Attack. The measurement of the angle between the wing and the air flowing over it.
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If you increase the AOA
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will this cause an increase or decrease in lift?
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What happens if you have too much AOA? Why?
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Stall. Cuz of the separation of airflow over thw wing and the drag created from the underneath portion of the wing
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What is the solution to ensure there isn't too much AOA?
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Computer controlled AOA limiters
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What are the 3 main control axis?
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"Pitch
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What are the jobs of the stabilizers?
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To provide stability for the aircraft and keep it flying straight
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What is the vertical stabilizer do?
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keeps nose of the plane from swinging to the sides
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What does the horizontal stabilizer do?
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Prevents up and down nose movement.
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What is a canard? What are some examples?
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When the horizontal stablilizer is in front of the wings. Eurofighter and Gripen
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What is the rudder?
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Hinged prat of the vertical stabilizer. used to deflect the tail to the left and right giving the yaw input.
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How do you get the yaw input?
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The rudder
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How do you get the pitch input?
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The elevator
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What is the elevator?
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Hinged part of horizontal stabilizer. Used to deflect the tail up and down giving it the pitch input.
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What is the aileron?
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Outboard hinged part of the wing. used to roll wings from side to side. Gives the roll input
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How do you get rolll input?
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The Aileron
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What are flaps?
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Used during takeoff and landing to increase the amount of lift produced by the wing
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What are slats?
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Help provide more lift by changing the shape of the airfoil
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What are spoilers?
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used to deflect air to produce drag and limit lift. Used during landing.
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What is drag?
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resistance of air to the airframe
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How is a shockwave created?
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"When the plane gets closer to supersonic flight
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What are the 3 types of drag?
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"Shock wave drag
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What is shock wave drag?
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the drag created by the shock wave
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What is parasite drag?
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"Created by airflow over a rough surface and can be caused by poor machining
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What is induced drag?
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caused by the production of lift. Slows an aircraft by creating a drag vector that is associated with the lift vector.
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What type of engines power most military and passenger aircraft?
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Jet engine AKA Gas turbine engines
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What is the simplest type of engine? What generation aircraft can they be found
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Turbo jet. Can be found on 1st and 2nd generation aircraft
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What are the 6 major compnents of the Turbo jet?
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"INlet
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How does a jet engine work?
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"Suck
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What is thrust?
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the force produced by te aircraft engine and is measured in pounds of thrust
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What is the T/WT
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Thrust to wieight ratio- the amount of thrust the aircraft angine can produce divided by the clean gross wieght of the aircraft
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What happens to the T/WT ratio when the fighter gains altitude? Why?
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It decreases. Less thrust produced in oxygen depleted environment
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What are the 2 primary types of jet engine thrust?
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Axial thrust and vectored thrust
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What is axial thrust?
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When the engine exhaust is directed out of the engine parallel to the engine.
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What is vectored thrust?
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the exhaust is directed either on a 2-D or 3-D plane.
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What are the advantages to vectored thrust?
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"Allows for higher AOA at slower speeds
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What are the 3 factors of combat gross weight?
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"weight of the airframe
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What is the comabt gross weight also known as?
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"safe
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What happens if the plane is near the combat gross weight at take off?
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A minimal amount of fuel is removed and they are refueld immediately after take off
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What is the wing loading factor?
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Combat gross weight/surface area of the wing.
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What is the turn rate?
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How fast the aircraft turns
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What is the ICV?
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Instantaneous corner velocity- the velocity at whcih an aircraft gets the highest turn rate with the smallest turn radius. Also the lowest speed at which the aircraft can reach it's max G.
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What is the ITR?
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Instantaneous turn rate- the measure of rate of turn at the ICV point
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What is the SCV?
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Sustained corner velocity- the speed an aircraft can get a high performance turn and can sustain the turn without losing speed or altitude
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What are EM diagrams used for?
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A graphic depiction of an aircraft's performance capability. Compare strenghts and weaknesses.
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