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An _________ is any machine that is capable of flying through the air.
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Aircraft
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The word aerospace is a combination of ____________ and ______________.
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Aeronautics and space
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When an airplane moves down the runway, for takeoff, a flow of air is created in the opposite direction to the direction of the takeoff. This is known as the _____________ ___________.
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Relative wind
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Forces in motion are said to be ____________.
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Dynamic
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If the air is dead calm at an airport, can airplanes still fly?_________ (Y/N)
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Yes
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In 1299 AD, Marco Polo observed ______________sailors being used as observers aboard what kind of a flying device?______________.
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Chinese
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A bird is a living ____________machine.
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Flying
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A large bubble of warm air is used to lift what kind of flying machine?_____________. Who is given credit for inventing this flying machine?_______________________________________
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Balloon, Montgolfier brothers
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As the air flows over the top of a wing, it is accelerated. What happens to the
pressure? _________________________.
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It decreases or drops
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As air passes under a wing, a certain amount of lift is generated. This is an example of _____________________Law.
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Newtons
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A curvature on the top of a wing, is called the _______________.
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Camber
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Name the two artificial forces acting upon an airplane in flight: ________________and _______________.
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Thrust and lift
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A person weighing 160 pounds is flying a high performance fighter. In one combat maneuver, that person weighs 1280 pounds. How many Gs is that?_________
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8
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Bicycle helmets now have a distinct tear drop, or streamlined shape. This is an effort to reduce what natural force?_________
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drag
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There are four ways of increasing lift in an airfoil. They are:
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increase speed, increase camber, increase area, increase angle of attack
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What is that point at which a wing will stall? ___________________________
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critical angle of attack
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The word burble means turbulent, tumbling air. This occurs over the top of a wing during a _____________.
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stall
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That axis which passes through an airplane from nose to tail? ________________
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longitudinal
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That axis which passes through an airplane from top to bottom? _______________
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vertical
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That axis which passes through an airplane from wingtip to wingtip?_____________
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lateral
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The point where all three axes come together is called the ____________________
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center of gravity
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What control surface, on an airplane, makes it roll about the vertical axis?
a. The rudder
b. The ailerons
c. The elevator
d. None of the above are correct.
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d
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The elevator causes the nose to _________ up and down.
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pitch
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The ailerons cause the aircraft to _________about its longitudinal axis.
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roll
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The ____________causes the aircraft to yaw about its vertical axis.
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rudder
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If an elevator and stabilizer are combined to make one control surface that acts by changing angle of attack, it is called a ________________________________.
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stabilator
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When one aileron moves down, the other ___________ __________.
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moves upward
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A propeller is actually a wing lifting ____________.
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forward
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In close to the hub of a propeller, the __________ of ________ is greater than at the tip.
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angle of incidence (or attack)
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The tip of a propeller achieves most of its lift because of greater ____________.
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speed
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The wing of a propeller is called the ___________.
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blade
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Fluid motion due to regions of unequal heating is called? _________________
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convection
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The ratio between the span of a wing and its chord is called? _________________.
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aspect
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The mathematical relationship between the distance a glider will travel forward to the loss of altitude is known as the ______________________________________.
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glide ratio
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A column of air that moves vertically is known as __________________________.
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thermal
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What is the great force that drives the motion of our atmosphere? ___________.
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Sun
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If a gliders wing has a span of 80 feet and a chord of 4 feet, what is the aspect ratio? _____
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20 to 1
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If the Air Force Academy TG-4A glider has an aspect ratio of 11.85 to 1, what is the chord of its wing? _____________.
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4.3 feet
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Adding a penny to a foam glider adds weight ahead of the ________of ___________.
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center, gravity
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The heat source for filling an envelope with hot air is known as the ____________.
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burner
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A lightweight, low carbon fuel used in hot air balloon burners?_____________
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propane
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The main body of a hot air balloon?_________________
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envelope
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A balloon operates on the principle of ____________________.
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buoyancy
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A ________________ inside of the envelope of a hot air balloon allows the pilot to release hot air for the purpose of descent.
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parachute
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Although a hot air balloon has no horizontal control, pilots can achieve some directional changes by seeking out changes in ____________ ___________at various altitudes.
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wind direction
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If sub means below, trans means between, and super means above or beyond, develop three words from these prefixes for the range of speeds below, between, and beyond the speed of sound: ________________, _________________,
_______________.
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Subsonic, transonic, supersonic
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Air is made up of several gases. Which one of these gases makes up the greatest percentage in the atmosphere? ____
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Nitrogen
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If a control surface, such as a vertical or horizontal stabilizer, does not move or provide lift, can it still be considered an airfoil?_______.
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Yes
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If the average worldwide temperature at 59 degrees Fahrenheit, what would be average temperature for a city 5000 ft above sea level.
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41.5
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Name the two natural forces acting upon and airplane in flight: _____________and_________________.
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Gravity and drag
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