The Science of Rockets

• 
  
  Rocket:expels gas one direction -move opposite direction.

 

originated - China - 1100's - military use and fireworks    

• Hot gasses pushed out, gasses push up

• Thrust: reaction

force that propels
rocket forward

PROCESS

• 1- rocket launched
  
• 2- 1st stage falls to Earth
  
• 3- 2nd stage ignites
  
• 4 -2nd stage falls to Earth


• 5 - 3rd stage ignites


• 6 - 3rd stage discarded




















• 7 - proceeds into space   


• Multistage rockets advantage -weight greatly reduced as rise






• 3rd faster than 1st (stage) = highest velocity

http://z.about.com/d/space/1/0/V/0/1/fire_arrow.gif (the 4 rocket pictures)http://eobglossary.gsfc.nasa.gov/Library/Giants/vonBraun/Images/rocket_firsts.jpg (chinese rocket)http://www.aero.org/publications/crosslink/winter2004/images/03_02.gif (action, reaction) http://www.suntrek.org/images/multi-stage-rockets.jpg (multistage rocket - fuel picture)