Polygon Develop
Frisbee Launcher //
Angular Momentum-The way that a frisbee flies is because of angular momentum. The angular momentum gives the Frisbee stability and allows it to stay in the air and travel long distances through the air. This process allows the Frisbee to act as a gyroscope. Frisbees are shaped like an airfoil, which helps them generate lift. In our project we have wheel that is given centripetal force via the motor. By controlling the amount of torque we give the wheel, we can create Angular Momentum on the frisbee propelling it through the flight path by providing a centifugal force against the frisbee.
Centripetal Force-Any force that causes an object to move in a circle is a centripetal force. Gravity, tension, friction, and other forces can all act as centripetal forces; all of these forces can act to pull an object into a circle. The way this works in our project is the centripetal force of the motor is keeping the wheel in position and keeping the wheel turning, essentially the wheel is being pulled by the motor to the axis and kept from moving out of place.
Cenrifugal Force-Centrifugal force is an inertial outward force directed away from the axis of rotation. Because of the wall in place on our project there is a constant centrifugal force being applied on the wheel which causes theangular momentum of the frisbee to continue while going around the bike wheel. The centrifugal force is what causes the frisbee to be pushed away and launched.
Improvements-The improvements that we want to make to the frisbee launcher are add a vex controller and motor to the dimmer switch, program the motor so that we can control the dimmer switch and therefore speed of the wheel without having to have someone manually control it. We would like to add an elevated surface to the endpoint where the frisbee ejects, so that the frisbee would fly farther; also we would like to add a holster for multiple frissbes so taht we could have multiple frisbees launch at once or to make it easier to launch one frisbee at a time.
Geothermal Energy-Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.
Heat Pumps-Geothermal Heat Pumps use electrically powered systems to transfer energy to and from the ground. During the winter they pull energy out of the ground to heat your building, which means that the ground is acting like a heat source. During the summer they reject energy to the ground to cool your building, which means that the ground is acting like a heat sink.
Heat Echange-A heat exchanger is a device used to transfer heat between one or more sources. The sources may be separated by a wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air.
Environmental Impact- The US Environmental Protection Agency (EPA) has called ground source heat pumps the most energy-efficient, environmentally clean, and cost-effective space conditioning systems available. Heat pumps offer significant emission reductions potential, particularly where they are used for both heating and cooling and where the electricity is produced from renewable resources. Ground-source heat pumps have unsurpassed thermal efficiencies and produce zero emissions locally, but their electricity supply includes components with high greenhouse gas emissions, unless the owner has opted for a 100% renewable energy supply. Their environmental impact therefore depends on the characteristics of the electricity supply and the available alternatives.
Geothermal Air Conditioner //
