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mine

http://prezi.com/fmjdajmeoxtu/
by

justin hammons

on 25 January 2011

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Transcript of mine

AIRPLANES! How is an air plane built? What Are They Made Of? They are made mostly of light weight material like CREP or carbon reinforced plastic Military Aircraft are made of light weight titanium alloy along with aluminum and steel alloy. First the metal is cut with a guided machine. The engines are made of steel, alluminum alloy, and titanium alloy Two types of material used are 2 special types of cloth one of which, polyester fabric, is stronger than steel. The body of the airplane is then molded into shape with the materials its made of and put in an oven to "bake" at about 1000 degrees Fahrenheit. After all the parts are put together the airplane is then painted any color the makers decide. What is the source of energy Airplanes generally use gas (jet fuel) and sometimes the experimental ones use solar power. The fuel powers the engines or engine which make the plane fly. Aviation fuel is a specialized type of petroleum-based fuel used to power aircraft. It is generally of a higher quality than fuels used in less critical applications such as heating or road transport, and often contains additives to reduce the risk of icing or explosion due to high temperatures, amongst other properties. how is the energy transferred? First the fuel is pumped from a tanker truck and using a special nozzle called a "j-spout"
thats inserted into a port about 60 millimeters in diameter and pumped at 40 psi or a5 psi
max just as if you were pumping gas into your car. There is three easy parts to how a gas turbine engine works. They are compressor, combustion area, and finally turbine. Compressor is when the turbine intakes in fresh air it, as the name
suggests, compresses air to a very high pressure. Next the combustion area burns fuel into high pressure/ high velocity gas. Last the turbine extracts all that pressure, energy and hot gases
and basically blows it all out. There is enough pressure and hot
gases blown out to generate 1,500 horse power in a single cycle. Improving our society and our world There are two main purposes that come with air planes.
One is commercial airlines like to travel and second is for millitary purposes. It started when Wilbur and Orville wright built the first
airplane in 1899. it was a small biplane that made its first
successful flight in1900 at Kitty Hawk field in North Carolina From then airplanes continued to grow until world war I
when the airplane was first used for millitary purposes. It
started in as the army air corps because at the time the air
force had yet to be established. There was only one job and
one type of airplane, they were used for survelliance and it
was conducted by a simple biplane. In world war II it was used again but
this time it was for fighting like dog
fights or one on one. It was then that
the germans invented the triplane. After this planes continued into the ones we know today. Is that all?..... no theres still the mater of it it earth friendly? Almost, scientists have tested and made a couple of
solar powered airplanes but havent quite figured out
how to run it at night. Yes there is alot of pollution that airplanes cause. One during fueling and reving up and taxiing (when engines exhaust composition changes) there can be an increase in hydrocarbon emissions. Hydrocarbons and NOx, both components of air traffic, can contribute to photochemical smog. Timeline! 1899 wright brothers have first sucesful flight 1914-1918 airplanes first used in war during WWI 1939-1945 airplanes used for second time in WWII 1945-present the plane evolves from biplane to tri plane to jets like f-15 silent eagle to f-22 raptor and commercial airliners. Credits! http://farm4.static.flickr.com/3221/2966188060_e504dc7f79.jpg
http://www.answers.com/topic/world-war-ii
www.Howstuffworks.com
www.wikipedia.com
www.prezi.com
http://www.aereo.jor.br/wp-content/uploads/2009/03/f-15-silent-eagle-3.jpg By: Justin Hammons Thanks for watching!!!
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