Please read pages 128 - 131 Define rockets Beginning, important dates, and important people/country, and how they work.

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Please read pages 128 - 131 Define
rocketsBeginning, important dates, and
important people/country, and how they work.
Work
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• Use the words and/or phrases on the next page, to
  complete your notes. We will check it together
  during discussion.

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Please read pages 128 - 131 Use Word bank to
complete notes

• Chinese
• Father of Rocket Theory
• Action
• Suborbital velocity
• Rocket experiments
• Father of modern Rocketry
• Thrust
• Orbital velocity
• Machines that use escaping gases to move
• National Aeronautics and Space Administration
• For every action there is an equal and opposite
  reaction

• Rockets
• Third Law of Motion
• Fireworks and weapons
• Reaction
• Robert Goddard
• Escape velocity

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Beginning of Rocket Science

• Rockets are machines that use escaping gas to
  move
• Tsiolkovsky (1900) Russian HS teacher
• Inspired by Jules Verne (science fiction
  writer)
• Explained how rockets work
• Known as Father of Rocket Theory

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Robert Goddard (1915 -1941) American Physicist

• Conducted rocket experiments
• Arose attention of US military during WWII
• Known as Father of Modern Rocketry

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• First Rockets invented by Chinese over 800 years
  ago.
• Used for fire works and weapons.
• Germans developed rocket bombs during WWII

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• At end of WWII US rocket research took off
• Cold War, US was frightened that Soviet Union
  would be superior to us in the arms race.
• NASA was formed July 29, 1958 (National
  Aeronautics and Space Administration)

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• Rockets work on a simple principle known as
• Newtons Third Law of Motion
• For every action there is an equal and
  opposite reaction.

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• EXAMPLE Fill a balloon with air and let it go.
  
• Action - air rushing backward from balloon.
• Reaction - balloon moves forward

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Rocket Engines

• Thrust is the force that pushes the rocket
  forward
• Fuel is burned inside a rocket engine (solid or
  liquid)
• Fuel burns, gasses expand, pressure is created
  inside engine.

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Rocket Engines

• Action gas pushes downward
• Reaction rocket moves upward

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Reaction
Oxygen Fuel Fuel burned here
Action
Hot Gases
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• Oxygen is needed to burn fuel
• No Oxygen in space. Rocket must carry its own
  supply.
• In space rockets move without fuel
• Fuel only needed to change direction

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• Orbital velocity (8km/s) speed direction a
  rocket must have to orbit the earth
• Suborbital (less than 8km/s) can fall back to
  earth
• Escape velocity (11km/s) speed direction a
  rocket must travel to break a planets
  gravitational pull