Talk:Group 21 2012 Gate 1

From GICL Wiki
Jump to: navigation, search

Management Proposal

If there is any need to contact our group, please get in touch with the Project Manager, Nicholas Harrison. Our group will meet on a weekly basis, Mondays at 5:00 p.m., located in Knox 104. Any other additional meetings will be decided upon by the Project Manager. At these meetings, we will be bringing the Project Manager up to speed on the tasks at hand. For the dissection process, we will be meeting in the lab during a specified time and day TBD. Nicholas Harrison will be assigned to Project Manager. His responsibilities include time management of the team, creating a process for the team to follow during this project, and make sure the team is operating at our full potential. He is our leader, therefore any group conflict will be brought to him and he will have the final say of all matters. Contact information: email- nlharris@buffalo.edu Jonathan Hughes will be assigned to Technical Expert. His responsibilities include having full responsibility of formatting the wiki page, making sure our technical communication is clear and precise, and will answer directly to the Project Manager on a weekly basis. Contact information: email- jhughes5@buffalo.edu Garrett Rice will be assigned to Product Manager. His responsibilities will include overlooking the dissection and reassembly of the product and accounting for the voice of the customer when needed. He will be the connection between the engineering team and the customers. He will also answer directly to the Project Manager on a weekly basis. Contact information: email- gmrice@buffalo.edu Tiffany Vinette will be assigned to Solid Works Expert. Her responsibilities include 3-D modeling of the dissection process. Dimensions and materials of the product will be taken into consideration. She will also be responsible for creating the solid models needed for the wiki page and 3-D animations. She will answer directly to the Project Manager on a weekly basis. Contact information: email- tvinette@buffalo.edu Elizabeth Moon will be assigned to Communication Liaison. Her responsibilities include being the thread that holds the team together with respect to communicating. She will be in charge of taking notes during meetings as well as noting who attends. Any communicating between group members requiring the project must go through her. Any emails sent will require a carbon copy to her. She will answer directly to the Project Manager on a weekly basis. Contact information: email- esmoon@buffalo.edu

Product Archaeology: Preparation and Initial Assessment

The history of the bicycle is highly debated, as many different models have been designed over the past couple hundred years. However, the first time two wheels and a frame were used for transportation purposes is believed to be in 1817. The bicycle operates by using mechanical energy from the rider, so there are only economic concerns when it comes the initial physical design of the bicycle, as it needs no fuel to operate. Ideally, a designer would want to find a lightweight but strong material for all parts, especially the frame. The designer would want the wheels to be durable, as that is the subsystem that is facing the most potential operating difficulties from extended use due to constant rolling contact with the ground. The main purpose of the bicycle is to provide free, efficient transportation after one owns the bicycle. It is used by people virtually everywhere across the world whose climate permits it. It is used widely in both urban and rural areas, in many countries across the world.


The bicycle is intended to be used to transport a person and that person\'s belongings a relatively mid-ranged distance, meaning longer than a reasonable walk and shorter than a reasonable drive. Different types of bicycles are made for different types of conditions and distances, but the average mid-ranged distance bicycle are the most common. Bicycles can also be used for exercising and recreation, but many people use them as a primary source of transportation to get to work, school, etc.

When analyzing the types of energy that are present in the system of a bicycle and the rider, it is important to understand that energy is constantly being converted to other types, as long as the rider is pedaling or the wheels are turning. One way energy is supplied by the rider when the rider moves their legs in a circular motion, rotating the chain rings and sprockets which are connected to a set of cogs on the rear wheel by a chain. Some bicycles have a gear system that allows the rider to interchange these gears and cogs, often using a simple derailleur system. This kinetic energy is now converted to rotating the wheels, which causes the bicycle to translate in the linear motion. The faster the bicycle is moving, the more kinetic energy is present in the system. When a rider is riding up a hill, there is an increase in potential energy but a loss in kinetic energy as the bicycle slows down. The rider can also input mechanical energy by moving the handlebars to the left or right which turns the front wheel, causing the bicycle to move left or right. The rider can also use a force to squeeze the brakes located by the handlebars that will transmit this force through the use of cables to squeeze the brake pads that slow down and eventually stop the tires. These things all affect the kinetic and potential energy of the system.

There are four main systems in a bicycle that contain individual components that vary in mechanical complexity. One main system is the structural system. Most frames in common bicycles are made from an aluminum alloy, where a compromise is made between weight/strength efficiency and cost. The shape is designed to be aerodynamic but support certain weight. Handlebars for steering and wheels for translation are also major components in the structure. A subsystem for the structural system is the suspension system that uses a shock absorber.

Another system of the bicycle is the drive system, which is what transmits the input energy from the rider to output kinetic energy. The main aspect of the bicycle that makes it so popular is that it doesn\'t require some kind of material fuel that costs money. The rider moves their feet in a circular path moving the pedals which are attached to gears and a chain that cause the wheels to turn. A subsystem of the drive system is the transmission subsystem, which involves a gear shifter, cables, derailleur, and gears.

The braking system is the most important safety feature on the bicycle. A reliable braking system is important no matter what type of bicycle is being used, as it is a very complex system. Caliper brakes are common on most mid-range distance bicycles. This subsystem applies a pressure to the tire rim proportional to the force applied by the rider. This subsystem includes the brakes, brake pads, cables, and caliper arms.

The frames of most common bicycles are made of steel or aluminum alloys. This is because steel and aluminum are relatively cheap and machinable. The spokes of the wheels are usually made out of steel and are very strong. The wheels are made out of rubber. Seats can be made out of a variety of materials, often leather. Chains are made out of steel, as they are made to be resistant to corrosion.

Bicycles are very popular due to their ease of use, which is often learned by people at a very young age and it is a skill that is easily retained for life. Riding a bicycle is a purely mechanical process, and the path a rider will travel is easy to visualize. Steering and braking are largely intuitive, as it becomes second nature with experienced riders. The product is easy to use at a young age and can be done as long as the user is physically fit. Maintenance can be somewhat complex for bicycles. This is because there are many systems and subsystems that are required to work almost perfectly in order for the bicycle to function properly. Maintenance can be as simple as pumping air into a tire or replacing a chain to being as complex as replacing an entire tire and rim and fixing gears. The amount of problems the user can fix depends on their skill and experience with bicycles.

The bicycle is very unique because it is a source of mid-range transportation that requires no expensive fuel to operate and it can travel a certain distance in a relatively short amount of time. An alternative for a short bike ride would be to walk, which would be slower but require less extreme energy to be expended. An alternative to a long bike ride would be to travel using a motorized vehicle, which would be faster but require a cost of energy. This is why so many people use the bicycle on a daily basis, which proves it to be a truly great innovation in transportation across the world.

Sources:

http://download.intel.com/education/common/en/resources/DD/DD_Session10_SG.pdf