Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
THRUST IS GENERATED BY THE PROPELLER AND OPPOSES DRAG CAUSED BY AIR RESISTANCE TO THE FRONTAL AREA OF THE AIRPLANE. DURING
Aim of experiment (1.1) The aim of this experiment is to show that the force exerted by a jet of fluid striking onto an object is equivalent to the rate of change of momentum in the jet. It is possible to observe the shape of the fluid after the impact with the flat plate. Apparatus (1.2) Impact of a jet apparatus Steady water supply with a flow control valve A flat plate Set of calibrated weights Stop watch Theory of experiment (1.3) In this experiment the rate of change is calculated directly from the change in momentum rate of the fluid before the fluid hits the plate and after the fluid hits the plate. This is a diagram of the straight plate and what will happen as the fluid impacts on the plate. Before the impact of the fluid onto the plate, the fluid is in line with the x-axis, as shows by the velocity vector labeled V1.
This is the average velocity of the glider in going between the two photogates. Plot a graph of vavg versus D with D on the x-axis. Table 1.1 Data and Calculations x1
7. A heat transfer process in the atmosphere that depends upon the movement of air is a. conduction. b. reflection. c. convection. d. radiation.
They are, thrust, the forward motion or speed of the paper airplane, for our paper airplanes this is provided by your throwing the plane forward. Second is drag, which is the resistance of the aircraft against the wind. Third is gravity, the force that pulls down all things on the Earth. To alleviate this force an object needs to become light in weight. Last is lift, where the push of the wind under the wing is greater than the push on top of the wings.
Calculations involving the Mole, Avogadro’s Number, Molar Mass, Mole-Mole and Mass-Mole calculations in chemical equations. Combustion analysis and calculation of empirical and molecular formulas from composition analysis. Electrolytes and non-electrolytes. Precipitation reactions and solubility rules. Writing balanced molecular equations and net ionic equations.
CHEMICAL REACTIONS EXOTHERMIC REACTIONS: When one substance is brought together or mixed with another and the resulting interaction evolves or generates heat, the process is referred to as an exothermic reaction. An exothermic (exo- is a prefix meaning "out of") reaction is one where the energy flows out of the system into the environment. Combustion reactions are exothermic. Some exothermic reactions may require heating just to get started, and will then proceed on their own. Exothermic reactions pose special hazards whether occurring in the open environment or within a closed container.
t = 3.88 s – this was recorded from the moment the rocket was launched to apogee using a stopwatch. V= 0 m/s – at top of apogee, the rocket has no velocity as it turns to face the ground a = 10 m/s^2 – constant acceleration of gravity To calculate the height, initial velocity is determined using the following equation. V=Vo+ at V is velocity, Vo is initial velocity, a is acceleration, and t is time. 0=Vo+ -103.88 Vo=38.8 m/s To find the height at apogee: ∆x=Vot+ 12at2 x is distance from launch to apogee. ∆x=3.88(38.8)+ 12(10)(3.88)2 ∆x=75.27 m Therefore the height given in problem 1 and the time calculated in problem 2 does not match and does not confirm.
Define auto and pilot ignition temperatures? Ignition temperature: when fuel is hot enough to self-sustain combustion (Piloted vs auto-ignition temperatures) 8. List the four factors affecting the burning rate of solid fuels? Size, Arrangement, Continuity, Moisture content 9. Would a nonsoluble liquid fire with a specific gravity of 0.8 sink or float when water is added?