FOR LANDING THRUST MUST BE LESS THAN DRAG, AND LIFT MUST BE LESS THAN WEIGHT. THE FOUR FORCES ACTING ON AN AEROPLANE AN AIRPLANE IN FLIGHT IS THE CENTRE OF A CONTINUOUS TUG OF WAR BETWEEN FOUR FORCES: LIFT, GRAVITY FORCE OR WEIGHT, THRUST, AND DRAG. LIFT AND DRAG ARE CONSIDERED AERODYNAMIC FORCES BECAUSE THEY EXIST DUE TO THE MOVEMENT OF THE AIRCRAFT THROUGH THE AIR. THE WEIGHT 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 FRONTAL AREA OF THE AIRPLANE.
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.
This is how Newton’s 1st law applies to my balloon powered racecar. Newton’s 2nd Law: To move a mass, you need a force. The racecar demonstrates Newton’s 2nd because the mass that you are moving is the racecar, and to move the racecar you need a force. The force is considered to be the air that releases from the balloon through the straw because this force allows the car to move forward. Newton’s 3rd Law: For every action, there is an equal and opposite reaction.
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.
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?
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.
Next you want to see how it runs at high speeds. Do the brakes work, how straight is does it travel. Are you getting too much air trapped? This is called the parachute affect. You want to make sure that the wheels are properly aligned.
A pod racers has two engines and the cockpit where the driver sits. The cockpit is connect to the two engines with two cables. As the two engines move forward, the cockpit goes with it. When the two engines turns, the cockpit turns with it. The one problem with that is, how.
Case Study 1 - Center Board Hopper and Feeder Observations The screw feeder blow feeds screws to screw driving equipment from a remote location. The centerboard hopper feeders are noted for quiet operation and reliable feed. Centerboard will not damage screws. Vibratory feeders are self-contained systems, comprising a specially tooled bowl feeder that orients the parts, a vibrating drive unit, upon which the bowl feeder is mounted, and a variable-amplitude control box. Analysis The Center Board Hopper and Feeder consists of a blade with a shaped track along its upper edge.
The mechanical power is converted into electricity to power homes and businesses. Wind plants produce electricity that emits zero pollutants. The environmental concern from the wind power plants is minimal; the problems that arise are the noise created from the rotator blades and the killing of birds by flying into the blades. With some technological advances, that issue was drastically reduced. Another major challenge is that the wind does not blow all the time, therefore, the turbines do not spin and no power is created during these