Introduction to Hot Air Balloon Travel What is
Introduction to: Hot Air Balloon Travel
What is a Balloon? Balloon… ◦ A spherical craft made of silk, rubber, or other suitable nonporous materials that contain either hot air or a gas that is lighter than air.
Key Characteristics of a Balloon 1. The gas or fluid that fills the balloon must be lighter than air. (hot air, steam, helium, hydrogen). 2. The envelope or container must be: a. b. c. d. 3. Light weight Airtight Securely Fastened Strong enough to support a man. The ability to produce gas in sufficient quantities must exist.
Basic Parts of a Balloon Parachute Valve Gore Envelope Burners Basket
Basic Parts of a Balloon Parachute Valve Gore Envelope: Envelope The bag containing the gas in a balloon or an airship. Parachute Valve: Valve on the balloon that releases gas to control density of balloon Gore: Burners Sub-sections of the balloon that make up the Envelope. Basket
Basic Parts of a Balloon Parachute Valve Burners Gore Envelope Burners Basket They heat up the air molecules causing them to move faster and farther apart. Basket This is where the passengers are located along with the fuel tanks.
The Science of Balloon Travel Buoyancy Pressure Gravity
The Science of Balloon Travel Buoyancy Density How closely molecules are packed together. The tighter the molecules are packed together the more dense, the looser they are packed the less dense the object is. Pressure Gravity
The Science of Balloon Travel Buoyancy Pressure An upward force created by a difference in Density between an object and a fluid (water / gas). Air Pressure that is created by the weight of the atmosphere on an object. Pressure Gravity The natural force of attraction exerted by Earth upon objects that tends to draw them to the center.
What is Density? …how closely molecules are packed together. … a more dense fluid or object. 1. Object or fluid weighs more… 2. Molecules move slower… 3. Example: Ice … a less dense fluid or object. 1. Object or fluid weighs less… 2. Molecules move faster…
What is Buoyancy? …an upward force created by a difference in density between a fluid an object. What is a fluid? – A substance that conforms to the shape of its container. (Examples: Water & Gases)
What is Buoyancy? Relative to how Hot Air Balloons Operate. You can make air less dense by heating it! This balloon won’t rise because the air inside of it is heavier (more dense) than the air around it. This balloon will rise because the burners will heat the air inside the balloon. Heating the air causes the molecules to move faster and farther apart making the air less dense. Now that the air inside the balloon is lighter (less dense) than the air around it, the balloon will rise.
What is Buoyancy? Relative to how Hot Air Balloons Operate.
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