Transcript of How do hot air ballon's fly?
Hot Air Balloons http://www.sciencetoymaker.org/HotAirBalloon/index.html http://www.eballoon.org/balloon/how-it-works.html How Does Hot Air Balloons Work?!? http://science.howstuffworks.com/transport/flight/modern/hot-air-balloon6.htm Hot Air Balloon Parts: Envelope: The envelope keeps the heat of the airship that uses gas to provide lift. Burner: The burner is what propels the hot air into the envelope which causes lift. Basket: The basket carries the passengers, the pilot and the propane gas cylinders. Proprane Tanks: The propane tanks hold the fuel. Parachute Valve : The parachute valve is at the top of a hot air balloon that will allow hot air to escape to controlled height. Panels: The panels are between the gores. http://www.eduplace.com/kids/hmsc/activities/simulations/gr4/unite.html Parachute Valve Cord: The parachute valve cord controls how much hot air is released tho control the height. Gores: The gores are the seems that are created when the envelope sewn together. Skirt: The skirt is the low part if the envelope and the skirt is made flame resitent materails. It also keeps the wind away so the heat goes up. A hot air balloon works because warm air rises. Warm air has more pressure and weighs less than cold air that has less pressure and weighs more. http://www.chm.bris.ac.uk/webprojects2003/hetherington/final/Hot_air_balloon_parts.html The gas is sent from the propane cylinders to the burners, the burners push the hot air into the envelope which makes the hot air balloon rise. 1783 When the brothers Joseph and Etienne Montgolfier started a side project which was experimenting paper vessels which were lifted by hot air. It took a few years but they came up with a similar hot air balloon design that we use today. The first flight in a hot air ballon was on September 19th. The ballons passengers were a sheep, a duck and a chicken. They were sent on an eight minute balloon ride over France. History Pilatre de Rozier died because his helium balloon caught on fire, when trying to fly over the English Channel. People started to think that gas balloon's were not great anymore, so there was not very much interest in ballooning anymore. Sometime In The 1800's Late 1800's and Early 1900's At the fairs a smoke balloon was heated bye a fire and when the balloon went in the air and started to sink the person in the basket would parachute down. 1960's The hot air balloon became more popular when it was used to carry supplies for the United States Navy's Office of Naval Research. It also came with more safety features. Websites We Used Game http://puzzlemaker.discoveryeducation.com/code/BuildWordSearch.asp# BASKETBURNERCHICKENFull transcript