1 / 10

Science of Rockets

Science of Rockets. Chapter 6 Lesson 1 Page 208. How were Rockets Developed?. Rocket- device that expels gas in one direction to move the rocket in the opposite direction Rocket technology originated in China hundreds of years ago and then gradually spread to other parts of the world

esma
Download Presentation

Science of Rockets

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Science of Rockets Chapter 6 Lesson 1 Page 208

  2. How were Rockets Developed? • Rocket- device that expels gas in one direction to move the rocket in the opposite direction • Rocket technology originated in China hundreds of years ago and then gradually spread to other parts of the world Rockets were made for military use as well as fireworks

  3. Early Chinese Rocket Robert Goddard German V-2 used during WWII

  4. Origin of Rockets • Rockets were made in China around the 1100s • They were basically arrows with a flammable powder that were lighted and shot by bows • Later they were advanced to have gun powder inside of the rocket • Read page 209 about the British rockets and their contribution to our National Anthem

  5. Development of Modern Rockets • Modern Rockets were first developed in the early 1900s by many different scientists • Russia and The United States were two of the biggest contributors to the modern rocket design ( Konstantin Tsiolkovsky and Robert Goddard) • Major advances were made by WWII • Read page 209 for rockets used in war

  6. How Do Rockets Work? • Rockets can be various sizes (they are not just the ones that go to space) • A rocket moves forward when gases shooting out the back of the rocket push it in the opposite direction • In most rockets fuel is burned • The gas may go in many directions, but it must leave the rocket from the back of the rocket propelling it forward

  7. Action and Reaction Forces • Basic law of physics: • For every force or action there is an equal and opposite force or reaction • Thrust- the reaction force that propels the rocket forward (depends on the mass and speed of the gases propelled out of the rocket) • Velocity- speed in a given direction • The more thrust the greater the velocity

  8. Orbital and Escape Velocity • In order to lift of the ground, a rocket must have more upward thrust than downward force of gravity • It must reach a certain velocity in order to go into orbit • Orbital velocity- the velocity a rocket must achieve to establish an orbit around the Earth • Escape Velocity- velocity a rocket must reach to escape a planets gravitational pull (must be about 40,200km/h or 25,000mph)

  9. Space Facts: Inertia, gravity, orbit, and weightlessness

  10. Advantage of Multistage Rocket • Why would you want to lose off part of the rocket? • Which part would you want to lose? • The main advantage of a multistage rocket is that the total weight of the rocket is greatly reduced as the rocket rises (therefore using less fuel to carry empty parts of the rocket)

More Related