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.
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.
Pressure on the brake pedal pushes forward a rod connected to the pistons of the two master cylinders. The pistons begin forcing fluid into the front and rear brake lines. At the same time, the brake-pedal pushrod positions the vacuum-control valve so that it closes the vacuum port and seals off the forward half of the booster unit. The engine vacuum line then
Explain the function of the following duct components: (57.2) Ell are elbows used to make turns in ductwork, Wye is used to split one large duct into two smaller ducts, Transition is used to change rectangular ducts from one size to another, Boot is used at the end of a round duct to allow connection of a rectangular register or grill. 8. What is the total available static pressure for ductwork for a system with the following specifications? (57.13) 9. Why should air velocity in branch ducts be limited to 600 fpm?
Introduction The purpose of this lab is to build a catheter system, with an inflated balloon applying pressure to the catheter being recorded by the computer and being graphed. While we analyze the data when the balloon is popped and a step input is recorded. Procedure [pic] Constructing the set up above with the catheter filled completely with water. We used a blood pressure cuff pump to fill the balloon with air while keeping the water in the tube locked off via the 3-way stopcock. Having the setup
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
Let’s start explaining how both work, like cars they have an engine, a car’s engine creates the power to move the wheels under the car, helicopters engines have a similar function, they give the power to rotate the 4-blade main rotor and a single 4- blade tail rotor. How does engine work? They create rotation and that rotation is transported to the main rotor and tail rotor, or on your car to the wheels, by a long high tech drive shaft, which looks like a tube. For example: Let say the engine is your hand, the high tech tube is a screw driver and the main rotor, or the wheel on your car is the screw, so your hand has the power and by the screw driver all that power is transported to the screw. The helicopters have 6 or more
Assume that Swet was twice the wing area and the area of the fuselage and tail was approximately a cylinder with a diameter of 10 ft and a length of 30 ft. It was determined that this gave a relatively close estimate for the surface area of the aircraft. Assume that the propeller efficiency (ηp) is 0.8, which is a typical efficiency for general aviation aircrafts. Assume the density of air at 28,000 ft is 0.000958 slugs/cubic-foot, which can be determined using an online atmospheric calculator. Assume the viscosity of air at 28,000 ft is 3.15E-7 pounds-force second/square-foot, which can also be determined using an online atmospheric calculator.
By doing so, the pilot can try to catch air currents that will move the craft in a desired direction. Powered balloons, in contrast, can be steered. They have engines, propellers, rudders, and steering instruments. Powered balloons are called airships, or dirigibles. There are two main types of airships: rigid and nonrigid.