Transcript Buoyancy & Aerodynamics

Propulsion
Jeff Rhoads and Terry Ballinger
MST @ MSU
2006
What is Propulsion?
What is Propulsion?

The science of propelling (pushing) an
object forward
What is Propulsion?

The science of propelling (pushing) an
object forward
Fuel
Mechanical
Motion
The Process
Propulsion Systems
Internal Combustion Engines
 Steam Engines
 Electric Motors
 Nuclear Propulsion
 Jet Propulsion
…

Propulsion Systems
Internal Combustion Engines
 Steam Engines
 Electric Motors
 Nuclear Propulsion
 Jet Propulsion
…

Most relevant to
today’s activity.
Internal Combustion Engines
Internal Combustion Engines
How it Works
Steam Engines
Steam Engines
How it Works
Nuclear Propulsion
How it Works
Nuclear Propulsion
Jet Propulsion

Involves the acceleration of a fluid through
(from) an engine
What does this do?
Jet Propulsion

Involves the acceleration of a fluid through
(from) an engine
Produces
Thrust
Jet Propulsion
Combustion
Oxygen
Thrust
Fuel
Rocket Engine
(Outer Space)
Jet Propulsion
Oxygen
Combustion
Thrust
Oxygen
Fuel
Combustion
Fuel
Turbojet
(High Altitudes)
Cool Movies
Cool Movies
Jet Blast
Cool Movies
QuickTime™ and a
YUV420 codec decompressor
are needed to see this picture.
Rocket Launch
Today’s Activity
Today’s Activity
CO2 Propelled Boat
Objective
Create a CO2 propelled boat that travels the greatest
distance in the minimum amount of time.
Materials
Other Materials






Baking soda
Vinegar
Clear plastic tape
Pennies
Graduated cylinders
Exact-o Knifes
Today’s Activity
CO2 Propelled Boat
Objective
Create a CO2 propelled boat that travels the greatest
distance in the minimum amount of time.
Fuel
Mechanical
Motion
Propulsion
Today’s Activity
CO2 Propelled Boat
Objective
Create a CO2 propelled boat that travels the greatest
distance in the minimum amount of time.
Baking Soda
and Vinegar
Fuel
Mechanical
Motion
Propulsion
The “Combustion” Process
Baking
Stuff that Other
 Vinegar  Fizz 

Soda
Smells
Stuff
The “Combustion” Process
Baking
Stuff that Other
 Vinegar  Fizz 

Soda
Smells
Stuff
Sodium
Acetic
Bicarbonate
Acid
Carbon
Dioxide
Other
Stuff
The “Combustion” Process
Baking
Stuff that Other
 Vinegar  Fizz 

Soda
Smells
Stuff
Sodium
Acetic
Bicarbonate
Acid
Carbon
Dioxide
Other
Stuff
NaHCO3  CH 3COOH  CO2  H 2O  NaCH 3COO
Design Considerations

Best ratio of baking soda to vinegar
(How can you systematically optimize it?)



Method to seal the reaction chamber
without mixing the baking soda and vinegar
Size/placement of exhaust hole(s) for CO2
to escape
Appropriate weight and its distribution