Aerospace

1
Aerospace

• By
• Mr. Lewis

2
Rocket History

• 1st solid fuel rockets were made by the Chinese
  before the 1200s
• - made with gunpowder
• - brought to Europe during the
  1200s
• - used for warfare, but were not accurate

3
Liquid Fuel History

• Dr. Robert Goddard flew the first liquid fuel
  rocket March 16 1926 in Massachusetts
• Powered by gasoline and liquid oxygen

4
Solid Fuel Rockets

• Use a fuel and oxidizer in a mixture to gain
  charge, once it is ignited it burns completely.
  Like a combustion engine without the change in
  thrust.

5
Space ShuttleSolid and Liquid Fuel Rockets
Liquid Fuel and Oxygen tank Feeding Engines

Solid Fuel Rocket Boosters
6
(No Transcript)
7
(No Transcript)
8

• Aerodynamic forces are generated and act on a
  rocket as it flies through the air. Forces are
  vector quantities having both a magnitude and a
  direction. The magnitude of the aerodynamic
  forces depends on the shape, size and velocity of
  the rocket and some properties of the air through
  which it flies. By convention, the single
  aerodynamic force is broken into two components
  the drag force which is opposed to the direction
  of motion, and the lift force which acts
  perpendicular to the direction of motion. The
  lift and drag act through the center of pressure
  which is the average location of the aerodynamic
  forces on an object.

9
Forces of Water Rocketry

• Weight
• Thrust
• Aerodynamic Forces
• Lift
• Drag

10
(No Transcript)
11

• Weight is the force generated by the
  gravitational attraction on the rocket.

12

• Thrust is the force which moves the rocket
  through the air, and through space. Thrust is
  generated by the propulsion system of the rocket
  through the application of Newton's third law of
  motion

13
(No Transcript)
14
Our Water Rockets

• Instead of hot gasses creating pressure, we will
  use an air tank to force air in the pop bottle
  and store pressure
• Action Expelling water from engine bottle
• (water is forced down)
• Reaction Water resisting against rocket body
• (Rocket is forced up)

15
Water Rockets Work Like Real Rockets
Air pressure (high)
Reaction Bottle forced up by water being
expelled down
Action
Water forced out and down by air pressure
16
Newtons First Law

• An object in motion will stay in motion with the
  same speed and in the same direction unless acted
  upon by a force.
• In this case the force is gravity and the ground
  are the forces.

17
Crumple Zones

• A Crumple Zone is, the zone of a car that absorbs
  energy upon impact. The purpose of a crumple zone
  is to increase the amount of time it takes the
  car to come to a complete stop in comparison to
  object the car hits.
• Crumple zones yield during a crash, changing
  energy from the crash, into heat and sound, which
  in turn reduces the chances that the passengers
  in the car will be hurt.

18
Crumple Zones

• In this case you need to protect your
  eggstronaut.
• You need to design a crumple zone in your rocket
  so that your eggstronaut survives the landing of
  your rocket.
• You will need to bring in material from home to
  help your crumple zone survive the impact of the
  landing.

19
Crumple Zones
20
Assignment

• Bring in two 2-Liter bottles.
• Design a Rocket with symmetrical wings.
• Design a Crumple Zone for your eggstronaut.
• Fly your Rocket, and have a eggstronaut that
  survives the landing.
• Have Fun!