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Chemistry: How Do Blimps Work?

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Blimps are truly a miraculous thing, from how they take off, to how they descend. But, what you may not of known is how this process works. To ascend, blimps use helium, a gas that is lighter than oxygen. Helium has an atomic weight of 4.002. The average weight of a blimp is
12,840lbs then after helium is added it can weigh 100 to 200 lbs.
Today, most blimps use helium because of the Hindenburg disaster in Lakehurst, New
Jersey during 1937. Most LTA (Lighter Than Air) aircrafts use helium now, but in the past they used hydrogen because it is even lighter than helium, but the problem with hydrogen is that is highly flammable.
LTA aircrafts use helium to generate lift, which keeps the airship in the air. Helium has a lifting capacity of 1.02 meters cubed. …show more content…

If you have ever seen a balloon that rises up when you hold it, you have seen helium work first hand. In a blimp that is 18 by 15 meters, it does almost the same thing. To lift a blimp of this size, you would need 264.705882353 kg of helium.
In a blimp, all of the helium fits into a massive tank where most of a blimps weight comes from. When this tank is filled with helium, the blimp rises. To descend, a pouch called a ballonet collects outside air to make the blimp sink again.
In some hot air balloons, the balloon part is filled with helium and heavy bags of sand, which are hung off and lowered when the balloon goes down. This is very similar to how blimps work. Most hot air balloons don’t use helium, they use fire to heat the air in the balloon because hot air rises. Due to the ability that hot air has, when air in a huge balloon is heated the whole balloon rises upwards with a basket attached to it, hence the name hot air

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