Prandtl's Theory Research Paper

The rotor, instead of being spun around its central axis is rather pulled along the stator by a moving magnetic field. Similarly, the linear induction motor of the EMALS [10] consists of two 100m parallel stators with a rotor built from permanent magnets moving between the stators. The stators are built from sections and only the section next to the rotor is energized at a given moment, reducing power consumption. Furthermore, Hall Effect sensors provide real-time feedback of the rotor velocity and thus the velocity profile during launch can be closely matched to that required of the launching

Introduction: The objective of this lab report was to observe a glider on an inclined air track and measure the amount of time it takes to travel from one point to another. The use of an inclined plane helps us study the correlation between the elevation of the incline and acceleration down the incline, which can be used to determine the acceleration caused by gravity. As we increased the height of the incline, the acceleration also increased, thus making the glider go faster. This helped us verify Newton’s second Law of Motion to a certain degree. Theory: The principle we tested in this lab was Newton’s second law that states the net force on an object is equal to the mass of the object times its acceleration (F ⃗=ma ⃗).

In this case, the unbalanced force is rolling friction, and it always stayed the same throughout this experiment. What changed, was the container released from the taller ramp had more GPE, more Kinetic Energy, and more inertia, which caused it to go further up the ramp than the lower one released from the lower ramp, with less GPE, and less

Air density: Increase of altitude means decrease of air density. The range and endurance increases with altitude because the efficiency of jet engine increases. Temperature: Increase of temperature (of air) will reduce efficiency of jet engine, giving increased fuel flow SUMMARY There are a few reasons the commercial airplanes cruise at high altitudes. • The air is less dense at higher altitudes. With less air in the way there is less drag on an airplane.

This means that there is more lift than gravity, which will keep the plane up. Drag is reduced by the way the plane is designed. This means there is more thrust than drag, which will keep the plane moving forward through the air. Bernoulli’s Principle says that if the speed of the air gets faster, pressure is reduced. Since air on top of an airplane’s wing goes faster on the top due to the curvature

Some of the pros are; “significant increase in horsepower, gives smaller engines a chance to gain much more power relative to their size, gets better fuel economy with engines that use less fuel to idle, turbochargers run off gases that would be expelled through the exhaust pipe and improves the efficiency”(“The Pros and”… page 1). There are also some cons of turbochargers, and one of the main ones is called “turbo lag”. Turbo lag is caused because it takes time to spool up the turbocharger, which means you will not receive your full power boost right away. Another big con of a turbochargers is that when they finally kick in, the power surges and could result in a collision or a crash. One of the last major cons of a turbo is that they require the use of oil.

Cetane Number The cetane number of a diesel fuel is the numerical result of engine test designed to evaluate fuel ignition delay. It is defined as the whole number nearest to the value determined by calculation from percentage by volume of normal cetane (cetane No. = 100) in a blend with heptamethylnonane (cetane No. = 15) which matches the ignition quality of the test fuel when compared by this method. High cetane number fuels generally cause lower combustion noise, improved control of combustion, resulting in increased engine efficiency and power output.

The initial volume is (1-f)V, where f is the filling fraction of water of the rocket. The value of K can be determined from the initial conditions, where K=P(1-f)^γ V^γ. Substituting in we get: W=(P(1-f)^γ V^γ V^(-γ+1))/(-γ+1) [1-(1-f)^(-γ+1) ] =PV/(-γ+1) [(1-f)^γ-(1-f)] Using this final equation we studied how the work done expelling the water varies with filling fraction f. Taking: γ = 1.4 V = 0.002 (m^3) P = 4.0 10^5 (Pa) We drew up a graph of the amount of energy extracted by the water from the compressed air. It is clear to see that at high filling factors, that there is only a small volume of compressed air and so not much energy is

There are chances of overrating the joy bringing effect whether in the form of money, what they think at that particular time or the previous dates. Practically, the income increase has a brief effect on the satisfaction of an individual. When a given country has a sudden increase in the income of its citizens, there is a proportionate increase in the sense of the well being. The life satisfaction increases as per capita income. However, there is a little increase in life satisfaction (Argyle, 2013) When the country experiences a sudden increase in income for their citizens, there is no corresponding increase in the sense of the well-being.

After that , the drag depends on airspeed , thus the drag increases. When drag is again equal to thrust , the aircraft no longer accelerates but holds a new , higher , and constant airspeed. This explains that every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces on it. b) CAR. Newton’s First Law also known as Law Of Inertia.