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How to make something fly without an internal combustion engine?

Sep 25, 2010 by yo mama | Posted in Chemistry

What are some methods of doing this? I have lighter than air flight and launch a projectile. This is for a chemistry assignment on practical applications of gas laws, and i was wondering if anyone had any other ideas?

Do you mean in the same way as a Balloon. Fill it with Hydrogen, or Helium would be safer, less risk of explosive decompression of the Balloon. A basic hot air balloon would be ideal for exploring practical applications of Gas Laws

djoldgeezer | Sep 25, 2010

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Hydrogen Internal Combustion Engines Can Your Car really Run on Water?

www.hydrowaterpower.com www.hydrowaterpower.com The small number of vehicles using hydrogen internal combustion engines (HICE) makes it difficult ...

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mechanical engineering is really interesting! Dont judge a book by its cover.

Want fuel cells? Think outside the hydrogen tank

20.11.11

"Solid oxide fuel cells are unique because they can oxidize any fuel," Wachsman explains. "They can run off of gasoline, diesel and natural gas today, and biofuels and hydrogen in the future, whenever that infrastructure is in place."

Hot Technology

Still, nothing's perfect, and Wachsman can sum up the reason why SOFCs aren't in large-scale production in a word: temperature.

"That is the issue," he explains. "It's the reason why the automotive companies are using PEM fuel cells. PEM fuel cells operate at around 80 degrees Celsius [180 degrees Fahrenheit], which allows them to startup fairly quickly. Current solid oxide fuel cells currently operate at 800 degrees Celsius [1500 degrees Fahrenheit], so it takes a long time to warm up to operating temperature, making them more applicable to stationary power generation."

Wachsman and his colleagues are working to change that. In an article in the November 18 issue of Science , the team outlines the technology behind a new world record power density SOFC that generates two watts of power per square centimeter at 650 degrees Celsius [1200 degrees Fahrenheit]. The cell uses a bi-layer electrolyte developed by Wachsman that is more than 100 times more conductive than the conventional zirconia-based electrolyte operating at the same temperature also a world record. When the cells are assembled into a stack they should produce three kilowatts of electricity per kilogram of material, more than an internal combustion engine at approximately one-third the size.

Source: PhysOrg.com

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