Dynamic Essay

The continuing rotation of the crankshaft drives the piston back up, ready for the next cycle. The piston moves in a reciprocating motion, which is converted into circular motion of the crankshaft, which ultimately propels the car. Gas engines usually have about the same about of horsepower as they do torque. The diesel engine usually has twice as much torque as it does horsepower, thus it is the better hill climber and load carrier.

First, the article claims that the fuel cell engines utilize easily available , renewable resources. However, the professor refutes that by saying that the resources are not easily available. Although, hydrogen is available in water, but it's not usable. She said it must be in apurified liquid state and it's highly artificial, so the process of produce and stor the liquid hydrogen is not easy because

The use of a hydrogen fleet, would solve many of the existing emissions issues associated with diesel fuel usage. ”Vision Motor calls their hydrogen tractor a Zero Emissions Terminal Tractor, or ZETA. It's the right thing for southern California because of its benefits to people's health, says LaRosa, citing lung and respiratory diseases blamed on exhaust smoke from internal combustion engines.” (http://www.truckinginfo.com/article/story/2012/04/hydrogen-fuel-cells-could-be-socal-fleets-future.aspx) Hydrogen offers no emissions in the air other than vapor, and fuel economy is better than most gasoline powered vehicles, roughly in the 30-50% range. Currently hydrogen is very costly to produce, and there isn’t enough infrastructure to support a full fleet of

Some of the concerns regarding hydrogen that are currently limiting its widespread throughout the world is hydrogen gas is very time consumer which requires a lot of time to free up from its elements even though it is less expensive than regular gas. Hydrogen gas cannot be moved through pipelines like oil due to it is a very light gas. Hydrogen gas require energy such as oil, coal, and natural gas to separate it from oxygen which will not just have logistical issues but also environmental issues.

The spacecraft uses nuclear thermal propulsion, which relies on heating a hydrogen fluid to temperatures nearing 5000 degrees Fahrenheit and raising pressures to about 1000 lbs/in2 to imitate the nuclear fusion process of the sun [7]. The resulting heated hydrogen will then be released through a nozzle to provide thrust for the spacecraft to move [7]. It has a specific impulse of about 900 seconds, which is twice the specific impulse of the most efficient chemical rockets [7,

It is the Stirling machine which converts thermal energy into electrical energy. Because of efficiency increase due to RTG, research about feasibility of this engine’s use in space and planetary

They don't have faster than light travel. But their solar system is a complex one with several habitable planets. They've perfected an EM drive based on microwaves. It renders any destination in the solar system reachable within a few weeks. They have a fleet of ships flying between worlds. More importantly, they recently commissioned a new class of ship. They built a massive ship in a hollowed-out asteroid. It's their first true starship. It carries a large crew designed to travel to the nearest stars at high, though sub-light speeds. The trips would take decades, but the EM drive makes it

Hydrogen cars are better because they go a longer driving distance according to Danielle Muoio hydrogen cars can go 300 mile per hydrogen cell! Hydrogen cars can also refuel in a minimum of 3 minutes. Dnews says ‘’hydrogen-powered cars are hitting the road this year, and eventually one's going to be in a crash so what would happen would it explode?’’ In the video he talks about how when the hydrogen car gets in a crash the hydrogen cell would not start a fire because the hydrogen would evaporate almost instantly be the gas doesn't evaporate because the gas is heavy. The hydrogen car is just like the gas car but with better mileage, can go longer distance, faster recharge, environmentally friendly and they don't make pollution or

When most people think of Hydrogen they think of the Hindenburg. The Hindenburg was initially supposed to be lifted by Helium. However, because Helium was so rare and expensive at the time, Hydrogen was used instead. Hydrogen was very cheap, it could be manufactured in industrious amounts and it is lighter than Helium; Hydrogen is also the most substance to date where Helium is not flammable at all. When the Hindenburg was launched it only took it about 32 seconds for the entire ship to fall and burn completely due to the 7,000,000 cubic feet of Hydrogen being used to get off the ground. Out of the 97 passengers only 62 survived this tragic event. Welcome to Hydrogen.

In today’s world there are many different engines that gets assembled in vehicles. The main difference in the engines are if they are gas or if they are diesel. While bearing some minor similarities, the differences between gas and diesel are remarkable.

As a quick statement prior to beginning this assignment I thoroughly enjoyed researching this topic. It has been of personal interest to me for years. I have, in the past (as far back as the 1970 's), invested my personal time researching designs and building prototypes, which utilize alternative fuels for vehicle propulsion and various mechanical motion applications with a practical approach.

Using hydrogen fuel is another way to increase power of engines. Compared to other fuels, hydrogen combustion is powerful. It can easily take off hundreds of tonnes and reach a speed of more than the sound (for examples, rocket use hydrogen combustion to take off) As the rockets use it, they reach a speed more than sound few minutes and just imagine what a speed cars will have by using hydrogen.

Taking a step away from the safety that their previous rocket line was focused upon, instead focusing entirely on a new and experimental methodology of propulsion control. Their ultimate goal is to prove that they had the capacity to orbit Kerbin without the aid of any governmental force.

For the past three decades Oil dominates the agenda of political discussion. With scares over price volatility, sizes of reserves, international imports and least of which are the environmental impacts due to carbon dioxide and other emissions. Various speculations and educated guesses place our total depletion of crude oil within the next 50 years and there is a general consensus between environmentalists that we steer toward a hydrogen transportation system given the projected work and nonexistent carbon dioxide emissions (Environmental Technologies class lecture, Santa Clara University). However many barriers stand in the way of attaining such a goal, most of which pertaining

In order to understand the why behind the need to change from fossil fuels to hydrogen power, it is necessary to understand what that power is and how it works. Hydrogen is the most abundant and simplest element on earth. It is most commonly found as part of water. In its pure gaseous form it is extremely light, but when ignited in this state releases a large amount of energy in an explosion. In this violent reaction the hydrogen combines with free oxygen molecules in the atmosphere and creates water vapor. This is similar to the way gasoline is combined with air and ignited in an internal combustion engine in the cars used today and like with gasoline, the combustion of hydrogen has risks. In addition to the risk, some of the energy released in the reaction is lost in the form of sound and heat. As an alternative to burning, these same gases can be combined with the use of catalysts to extract the free electrons produced as liquid water is formed(Popovici and Hoble Dorel). Using cables connected to a fuel cell such as this, those electrons go through a circuit, generating electricity. This is more efficient than combustion because less energy is wasted in the form of sound and heat. Going further, greater efficiency for this reaction can be had the lower the temperature it is allowed to take place at, with 83% power at 25◦C(77◦ F)(Popovici and Hoble Dorel). As fuel cells are created with better heat management and