For our project, our client, gave us the task of designing and developing a teaching aid that uses hydrogen to power a mechanical device. This task led us to the construction of a hybrid fuel cell/battery-powered model hovercraft. The hovercraft, which we call “Hovercraftica”, uses a battery to power the lift fan and two hydrogen fuel cells to power the fan that provides thrust. Hovercraftica is a self-contained demonstration unit with every aspect of its propulsion onboard. The hydrogen for the fuel cells is produced through the electrolysis of water. This is achieved by collecting light energy via a solar panel and sending it through the fuel cells.
In order to work as efficiently as possible, our team split into three different groups: writing/ presentation, construction design, and electrical. While the construction and electrical teams worked on building and testing the hovercraft, the writing/presentation group created a 220-page teaching manual with student activities, wrote the final proposal, and designed the final presentation.
During construction, our team ran into several problems with the hovercraft. First, we had problems trying to find the necessary parts. Second, the parts that we needed (especially the fuel cells) were more expensive than our budget allowed. Third, we had problems with integrating the hovercraft and fuel cells, and lastly, with finding the motor speed that worked. Eventually we solved these issues, only to be set back again when we fried one of the fuel cells.
After we had our parts, we tested each of them separately to make sure that they worked as needed. We also tested the hovercraft as a whole upo...
... middle of paper ...
Quick Facts About Wind Energy. US Department of Energy: Wind Energy Program. Retrieved
October 19, 2003, from http://www.eere.energy.gov/wind/web.html
Solarbotics.net. Retrieved November 17, 2003, from http://www.solarbotics.net
Solar Cars - Solar Energy and Photovoltics. What You Need To Know About. Retrieved
October 14, 2003, from http://inventors.about.com/library/inventors/blsolarcar.htm
Solar Energy…. SunWater. Retrieved September 18, 2003, from
Urban Air: Health Effects of Particulates, Sulfur Dioxide, and Ozone. World Resource Institute.
Retrieved September 27, 2003, from http://www.wri.org
Why A Hovercraft? Universal Hovercraft. Retrieved November 2, 2003, from
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- Theory Centripetal force is a force that makes and object move in a circular path. When an object moves in a circle it can have a constant speed where the magnitude of the velocity is the same but the direction is always changing so the velocity cannot be considered constant. For the velocity to change there must be an acceleration and from there on we can calculate the centripetal force. There are also instances where we don’t know the velocity but we know the time it takes to so from that we can get the velocity of the object that is traveling in the circle.... [tags: Force, Mass, Kinematics, Energy]
1128 words (3.2 pages)
- Abstract Police have the duty and responsibility to enforce the laws and ordinances within their jurisdiction, maintain order, and assist those within the community. Police officers protect property and lives (Duties & Responsibilities of Police Officers, 1975). In the course of duty, a police officer may use force when necessary. The International Association of Chiefs of Police has defined force as “that amount of effort required by police to compel compliance from an unwilling subject” (Police Use of Force in America 2001, 2001).... [tags: Use of Force Continuum]
1983 words (5.7 pages)
- In society today we see and hear a lot about the use of lethal force. Law Enforcement and the public perceive the use of lethal force in many different ways. Sometimes these opinions cause chaos within society and law enforcement agencies. In this paper there will be an analysis of how perceptions on the use of lethal force varies between the public and law enforcement agencies whether it be local, state, or government agencies. To start off, what exactly is considered lethal force in todays society.... [tags: law enforcement, physical force, death]
999 words (2.9 pages)
- Variation in the Use of Force Amongst Police Departments The use of force has been around since policing began, although the rules for its use have changed overtime. In a 1964 survey, the majority of police reported they were to use “good judgement” when deciding whether or not to shoot (Walker 1993, 26). Back then, police also used force for any fleeing felon, which basically meant whenever. Now that rules have changed, the American Law Institute’s Model Penal Code, established in 1962, states that police are to only use force when they feel their life or someone else’s life is in danger (Walker 1993, 27).... [tags: Police, Constable, Crime, Deadly force]
1222 words (3.5 pages)
- Gender disparity impacts numerous aspects of everyday life. It influences our work or interactions with others and our home life. It impacts our work by the jobs and positions that certain genders obtain and their salaries. Likewise, it controls how we react to others based on expectations made for our gender. For instance, those who work in customer service tend to be female and are expected to be kind to put customers at ease. It impacts families through the division of work given to spouses based on their gender or perhaps their income.... [tags: gender gap, work force discrimination]
563 words (1.6 pages)
- When it comes to the criminal justice system, legal rulings only provide a systematic method of dealing with the problem of crime and, especially, the problem surrounding the police use of force. In Graham vs. Conner, for example, the courts established the four-factor test to evaluate police use of excessive force but left other, underlying social and moral dilemmas untouched. Furthermore, the influence money has in negotiating punishment via lawyers and bail, have made the courts a perfect playing field for the political and social elite to rule.... [tags: Police Use of Force]
1562 words (4.5 pages)
- If you had to choose a nation to take on the power of protecting the world basically as a global police force who would you choose to take on this big responsibility. Well most of the countries are choosing the U.S. well the troops feel different on this topic they feel like it is not our duty to try and solve everyone else’s problem. They also need to help with issues that this is needed and we are the best trained and best equipped to react to any scenario. Because the united states is making two new brigades that are trained to resolve issues without violence and to depend more on social skills but still trained well enough to fight in a pinch, and we have thousands of troops deployed al... [tags: International Police Force]
1437 words (4.1 pages)
- Use of Force “The police are the public and the public are the police; the police being only members of the public who are paid to give full time attention to duties which are incumbent on every citizen in the interests of community welfare and existence,” Robert Peel. The use of force for police officers is something I find to be justified and right, because it can possible help save the officers life and any witnesses lives. Everyday law enforcement personal have the possibility to face dangerous events in their daily duties.... [tags: Police, Law, Deadly force, Police brutality]
1524 words (4.4 pages)
- The Use of Force In Carlos Williams’s short story, “The Use of Force,” the doctor’s use of force is portrayed in a way that is controversial. Controversial in that it could easily be argued either that the doctor has complete reason to use force upon the girl, or that the doctor has no right to use any amount of force upon the girl without her consent. It could also be argued either that the results of the doctor’s use of force is a success or a failure. I feel that the doctor has reason to use force upon the girl in order to check her tonsils for a number of reasons.... [tags: The Use of Force Carlos Williams]
549 words (1.6 pages)
- Use of Excessive Force by Police Introduction: Police officers are given a significant amount of discretion simply due to the nature of the job. Officers are faced with many threatening situations forcing them to react quickly yet appropriately. They have the power to infringe upon any citizen's rights to freedom and therefore they must use this power effectively. One major concern with the amount of discretion officers have is their power to decide when to use force or when to use lethal force.... [tags: Police Law Legal Force Essays]
3661 words (10.5 pages)