FOR A MOMENT, THINK OF AN AIRPLANE MOVING FROM LEFT TO RIGHT AND THE FLOW OF AIR MOVING FROM RIGHT TO LEFT. THE WEIGHT OR FORCE DUE TO GRAVITY PULLS DOWN ON THE PLANE OPPOSING THE LIFT CREATED BY AIR FLOWING OVER THE WING. THRUST IS GENERATED BY THE PROPELLER AND OPPOSES DRAG CAUSED BY AIR RESISTANCE TO THE AIRPLANE. DURING TAKE OFF, THRUST MUST BE GREATER THAN DRAG AND LIFT MUST BE GREATER THAN WEIGHT SO THAT THE AIRPLANE CAN BECOME AIRBORNE. FOR LANDING THRUST MUST BE LESS THAN DRAG, AND LIFT MUST BE LESS THAN WEIGHT.
Continue decreasing the value of D, by using successively smaller pieces of cardboard. Data and Calculations For each value of D, calculate the average of t1 through t5. Record this value as tavg. Calculate vavg = D/tavg. This is the average velocity of the glider in going between the two photogates.
Be sure to address the concepts of center of pressure and aerodynamic center, as well as any pitching moments occurring on the airfoils Lift is the force that directly opposes the weight of the airplane. The first theorem addressing lift is Bernoulli’s principle. The airfoil travels through the air the shape of the airfoil creates a lower pressure above the wing and a higher pressure below the wing. This pressure differential causes the airfoil to be pushed upward and lift is a result. The second theorem is simply Newton’s third law where air is forced downward so there is a reaction of the airfoil being pushed upward (lift).
2. "F = ma: the net force on an object is equal to the mass of the object multiplied by its acceleration." 3. "To every action there is an equal and opposite reaction." To prove the 1st law, you can see that the air released from the balloon disturbs the state of rest of the car and makes it move.
As the jets of gas shoot backward, the engine and the aircraft are thrust forward. These gases exert equal force in all directions, providing forward thrust as they escape to the rear. Engine thrust may be increased by the addition of an afterburner section in which extra fuel is sprayed into the exhausting gases.In a turboprop engine, the exhaust gases are also used to rotate a propeller attached to the turbine shaft for increased fuel economy at lower altitudes. For typical jet engines overall efficiency ranges from 20 to 40%. A very tiny fraction of a percent goes to generate noise.
The amount of liquid to load into a tank depends on _______-The legal weight limits and the amount the liquid will expand in transit. 9.) You are driving on a clear night. You must dim your headlights from high to low. You should adjust your speed so you can stop within ______-The distance you can see ahead.
A.) Short planes with long wings fly further than long planes with short wings. Q.) Describe, in detail, a procedure to test your hypothesis. Identify the controlled variables.
You can conduct a web search with keywords “instructions for paper airplanes” to see some designs and the instructions for making them. Go outside, throw the plane and time how long in seconds the plane flies. Using a stopwatch or the second hand on your wristwatch, record the number of seconds from the time it leaves your hand until the time it lands on the ground. Using a meter stick, ruler, or tape measure, measure the distance the plane traveled. Record your measurements in the data table at the end of this document.
Numerical Simulation of A Space Launcher Flow in the Subsonic Regime of the Ascent Introduction For a Space Launcher it is critical to gain an accurate estimate of the drag on the launcher. This is because it is one of the characteristics which determines how much fuel is needed to be carried on board, which in turn adds towards the total weight hence the cost of the launcher. Base drag is due to the afterbody of a space launcher which can account for up to 30% of the total drag (3) making the afterbody an important asset of the launcher to analyse for drag. When the propulsive jet stream exits the nozzle it mixes with the external stream creating a mixing layer due to a phenomenon known as jet entrainment. The larger the mixing layer the
3. The histogram below plots the carbon monoxide (CO) emissions (in pounds/minute) of 40 different airplane models at take-off. The distribution is best described as is: Uniform. Heteroskedastic. Normal.