Term
| ________ use buoyancy to float in the air in much the same way that ships float on the water |
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Definition
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Term
| What two purposes does the fuselage serve? |
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Definition
1- Carries payload
2- holds control and stabilization |
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Term
| What is a setback from having a straight wing? |
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Definition
| Loses a lot of lift due to wingtip vortices |
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Term
| What is an advantage of having swept wings? |
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Definition
| They provide yaw stability |
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Term
| ________ are symmetrical triangular wings designed to fly at transonic or supersonic speeds |
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Definition
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Term
| What is a drawback to delta wings in regards to efficiency? |
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Definition
| It's shape creates a very small speed range in which it can operate at its peak efficiency |
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Term
| The _______ is an aviation term used to describe the tail portion of an aircraft |
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Definition
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Term
| What does the empennage consist of? |
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Definition
entire tail assembly:
-Vertical stab
-Horizontal Stab
-trim devices
-rudder
-part of the fuselage where it's all attached |
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Term
| The two types of landing gear are: |
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Definition
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Term
Which law is this?
"In the absence of forces, a body at rest will stay at rest, and a body at a constant velocity in a straight line continues to do so indefinitely" |
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Definition
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Term
Which law is this?
"When a force is applied to an object, it accelerates. The acceleration is in the direction of the force and proportional to its strength, and also inversely proportional to the mass being moved" |
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Definition
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Term
Which law is this?
"For every action, there is an equal but opposite reaction" |
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Definition
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Term
Which law is this?
"The pressure of a fluid (liquid or gas) decreases as the speed of the fluid increases |
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Definition
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Term
| The differential pressure between the upper and lower part of the wing creates ______ |
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Definition
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Term
What does this describe:
The component of the aerodynamic force which is perpendicular to the relative wind |
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Definition
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Term
| How can a pilot control air density? |
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Definition
| By flying at a different altitude |
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Term
| How can a pilot control True Airspeed? |
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Definition
| By changing the speed of the flight |
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Term
| How can a pilot change the coefficient of lift? |
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Definition
| By varying the angle of attack |
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Term
| What three things in the Lift equation can a pilot control? |
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Definition
| True airspeed, coefficient of lift, air density |
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Term
| Explain what a critical angle of attack is. What happens when it is exceeded? |
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Definition
| Where an airfoil stops generating lift. The aircraft stalls |
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Term
| _____________ is a measure of the curvature of an airfoil |
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Definition
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Term
| In relation to the CG, where does the center of lift need to be to have a positively stable aircraft? |
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Definition
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Term
| What aircraft axis extends from the front to the rear of the aircraft? When there is motion about this axis what is the aircraft doing? |
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Definition
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Term
| What aircraft axis extends crosswise left and right? When there is motion about this axis what is the aircraft doing? |
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Definition
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Term
| What aircraft axis extends upward and downward? When there is motion about this axis what is the aircraft doing? |
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Definition
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Term
| ________ control rotation about the longitudinal axis |
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Definition
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Term
| _______ controls rotation about the lateral axis |
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Definition
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Term
| ________ controls rotation about the vertical axis |
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Definition
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Term
| ______ occurs when the left and right wing experience different amounts of lift due to aileron deflection when rolling the aircraft |
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Definition
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Term
| Adverse yaw is countered by applying ________ |
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Definition
| rudder in the direction that the aircraft is rolling |
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Term
| What are the four forces acting on an aircraft |
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Definition
| Lift, weight, drag and thrust |
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Term
| _________ is defined as the force acting on an aircraft during flight that opposes thrust |
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Definition
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Term
| ____ drag is caused by friction and form drag |
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Definition
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Term
| ________ drag is the drag due to lift production |
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Definition
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Term
| As velocity increases, _____ drag decreases sharply and ____ increases sharply. |
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Definition
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Term
| You must include ____ drag when you are in the transonic region |
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Definition
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Term
| A ___ is a sudden reduction in the lift forces generated by an airfoil |
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Definition
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Term
| The easiest spin to get out of is ___ |
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Definition
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Term
| ___________ is the maximum speed at which the pilot can use full, abrupt control movement without overstressing the airframe |
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Definition
| Instantaneous corner velocity (Maneuvering speed) |
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Term
| The angle between the relative wind and the chord line is called ____ |
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Definition
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Term
| ____ drag is a product of an increase in lift |
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Definition
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