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Invention Of Rockets.pptx
- 1. • Name- Mantra Vora • En. No. – 12102080501042 • Branch – Information Technology • Subject- Creativity, Problem Solving and Innovation. • Topic- Invention of Rockets
- 2. 1.WHAT ARE ROCKETS? • A rocket is a container enclosing a gas under pressure. • A small opening at one end of the container allows the gas to escape in one direction. That provides thrust that propels the rocket in the opposite direction.
- 4. 2. Airplanes versus Rockets a rocket carries its own supply of oxygen for combustion. A jet engine requires oxygen from the atmosphere for combustion, and so cannot operate in the vacuum of space
- 5. 3.WHERE DID THE IDEA CAME FROM? • Moving air created low pressure over the paper and the higher pressure under the paper (or wing) lifted it! • The Bernoulli Effect!
- 6. 4. A BRIEF HISTORY OF ROCKETRY • Sometime in 1000s Chinese had rockets fueled by gunpowder. • In 1812 at Fort McHenry in Baltimore, Francis Scott Key wrote a poem that included the phrase “ the
- 7. 4.1 ANCIENT AND MODERN WARFARE
- 8. 4.2 ROCKET POWERED FLYING CHAIR
- 9. 4.3 CONGREVE ROCKETS • British and American war in 1812. • Produced Red Glares. • The Star Spangled Banner by Francis ScottKey,the National Anthem of America
- 10. 5.MODERN USES OF ROCKETRY
- 11. 6.U.S. INVENTOR OF MODERN ROCKETRY • Dr. Robert Goddard launched the world's first liquid-fueled rocket on March 16, 1926. • His work is as important as the Wright Brothers flight experiments.
- 12. 7.NEWTON’S DISCOVERIES: GRAVITY AND LAWS OF MOTION • Sir Isaac Newton’s three Laws of Motion helped very much in the field of Rocketry
- 13. 8. WHAT DOES GRAVITY HAVE TO DO WITH ROCKETS? The force of thrust pushing rocket upwards is greater than the weight force due to gravity downwards. This unbalanced force causes a rocket to accelerate upwards.
- 14. 9. INTERESTING FACTS ABOUT ROCKETS 1. Most rockets are launched from the ground because the rocket exhaust thrust is bigger and stronger than the rocket’s weight on Earth. 2. It takes a NASA space shuttle 8-1/2 minutes to get to space. 3. The smallest space rocket stands 33 feet tall. 4. Rockets work more efficiently in space than in our atmosphere.
Editor's Notes
- So, what is a rocket? Let’s read the definition. What are the key words Container – gas – pressure - thrust Now, I think your teacher has a ‘rocket in her pocket’! IT’S A BALLOON! How can a balloon be a rocket. A container – check Holds a gas under pressure – (teacher blows air into the balloon) – check Air leaves the balloon one way and the rocket balloon flies in the opposite direction! It IS a rocket!
- Let’s take a look at some rockets. The first rocket picture is ….. Can you guess? Right! Fireworks. Fireworks get into the air by rocketry! This is really a small Estes rocket that can be bought in a hobby shop and launched in a park or backyard. My favorite rocket when I was growing up was the X-15! I loved that rocket! But look, It did not launch from a launch pad – but was dropped from a large airplane! Soon, rockets sent men and women into space – first one, then two then three astronauts! Then…the shuttle (photos 6,7,8) Rockets can look different – this one is smaller than most and (photo #10) this one is launch from a submarine. Who knows, maybe one day you may be launched into space by a rocket and explore the planets!
- Now, let’s talk about the difference between an airplane and a rocket. Look at the pictures and observe some differences. (Planes fly horizontally to the earth, and rockets go straight up.) Yes, but what else? Airplanes have wings! (and rockets don’t – they have fins.) Airplanes need LIFT to get their mass off of the ground. What’s lift? o
- Now rockets are not new to the world. The ancient Chinese used rocketry for warfare and also for getting fireworks up in the air. Our own national anthem also goes (ok – sing) “the rockets red glare, the bombs bursting in air…” Remember? Rocketry! And I’m sure many of you have enjoyed watching fireworks on the 4th of July or at baseball games in the summer. How do you think they get so high in the air? Right! Rocketry!
- In ancient times and in modern times – some countries – who had the knowledge and the materials - used some kind of rocketry.
- Here a shuttle launch and the International Space Station.
- Let’s think about these questions…..