CJs compilation of notes thru midterm I

CJs compilation of notes thru midterm I - Wednesday...

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Wednesday August 25, 2010 Phone: 967-0471 (before 9 PM) Thesis: about 5 pages Technology: anything intended to modify the environment for the benefit of humanity or some  subset of humanity Science: The systematic use of logic and evidence to solve problems, to answer questions, and  to explore the universe Industry: the systematic utilization of labor and machinery to maximize the production of "stuff" Flight Lighter than Air: -Balloons -Non-Rigid Airships -Semi-Rigid Airships -Rigid Airships Heavier than Air: -Principles of Flight -Bernoulli's Principle Airship: a lighter-than-air cradt having a gas bag, envelope, or skin that is not supported by any  framework  Dirigible: a word that describes any steerable or controllable airship Nonrigid: shape of the envelope is maintained by the internal pressure of the gas with which it is  filled and not supported by any framework Blimp:
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Rigid airships: an airship with several bags or cells enclosed in an envelope supported by a rigid  framework structure -Referred to as Zeppelins Heavier than air aircraft: aeroplane The four major forces that act on an aircraft in level flight: thrust, weight, drag, and lift -A propeller accelerates a large amount by a small amount -A jet engine accelerates a small volume of air by a large amount -Bi-planes provide a lot of lift but create more drag Daniel Bernoulli: 1738 Treatise on Hydrodynamics -Pressure of fluids vary inversely with their velocity -The Faster particles moves, the Lower its pressure - Wings allow air to move faster over and slower under  More Pressure up, Less Pressure  down - Wing is Turning the Air in such a way that the curve is forcing air to move out of the way  which reduces the pressure above the wing more than air below the wing -The Larger the area of the wing, the more lift: Double the area = Double the lift Sir Isaac Newton Newton's Third Law of motion: Every action there is an equal and opposite reaction -the turning of air creates a downwash from the wing which can be observed in flight Wrights: focus on controlled flight Controls: -Yaw: left to right -caused by rudder, usually on the vertical stabilizer (tail)
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-Roll: rotate around the length of the aircraft -controlled by the control surfaces of the wing (ailerons) (connected to wheel or stick) -Pitch: nose up or down -caused by elevators usually on the horizontal portion of the tail -Pitch controls area of attack Flaps and Slats -Alter lift and drag -change shape of wing -airplane will be able to fly at lower speeds -How -Why -Flaps are on the back, slats are on the front Parts to know -wings -fuselage -rudder -ailerons -elevator -vertical stabilizer -horizontal stabilizer Air Power: the use of the space above the earth for your purposes Wednesday September 1, 2010
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