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Water Rocketry Presentation
- 1. HI :)
- 2. We are team spAts
- 3. Website www.spats.in Facebook www.facebook.com/space.iitkgp Twitter www.twitter.com/space_iitkgp
- 4. So what do we do?
- 5. We are a group of people who are fascinated by the possibilities and challenges of space exploration.
- 6. No, we are not that nerdy :P
- 7. We aim to foster the interest of students in the field of space science & technology
- 9. Work done by spAts Astronomy Club Workshops and Lectures Guest Lectures Moonwalk Competitions all round the year
- 10. Our Collaborations IIT D IIT M
- 13. What do we have in store for you ?
- 14. /* Video 0 */
- 15. Enough about us, lets dive into rocketry !
- 18. I promise this won’t put you to sleep ;) And it would be quick too…
- 19. Can we make things fly ?
- 20. The Greeks Can I use the power of pressurized steam to make something fly ? Archytus , Greek Scientist
- 21. The Chinese Ignited filled hollow pieces of bamboo with gunpowder. Wan Hu made a rocket powered chair was made of bamboo & was attached to 47 fire arrows !
- 22. Modern scientific development of began with the discovery of the famous Newton’s Laws of Motion
- 23. Rockets as Weapons ?
- 24. Q1. Identify the personality.
- 25. First iron-cased rockets were used against the British in the Anglo-Mysore wars by Tipu Sultan. Use of rockets allowed longer range of weapons.
- 26. Is Space Travel possible ?
- 27. KonstantinTsiolkovsky, proposed the idea of space exploration by rocket.
- 28. Robert Goddard - Father of Modern rocketry On March 16, 1926, Goddard became the first manto successfully launch a liquid fueled rocket.
- 29. Space Race !
- 30. /* Video 1 */
- 31. Future of Space Travel
- 32. /* Video 2 */
- 33. What is a rocket ?
- 34. A vehicle driven by momentum produced due to high speed ejection of propellent is called a rocket.
- 35. What are the parts of a rocket ?
- 39. How do rockets work ?
- 40. Rockets push against the inertia of the ejected gases!
- 42. Propellants Fuel + Oxidizer Liquid Hydrogen Liquid Ammonia Hydrazine Kerosene Liquid Oxygen Hydrogen Peroxide Nitric Acid Liquid Fluorine
- 43. What forces act on the rocket during flight ?
- 45. Lift and Drag : The Aerodynamic forces
- 47. The flow is turned in one direction, and the lift is generated in the opposite direction.
- 52. A "stable" rocket is one that flies in a predictable path, as opposed to an "unstable" rocket, which tends to twist and turn all over the sky unpredictably. While unstable flights can be interesting and exciting, it is generally safer and more fun in the long run to strive to make your rockets Stable.
- 54. Use of fins for stability Fins help in maintaining stability by using the difference in pressure between the two largest surfaces (on either side of the fin).
- 55. Rockets with higher velocity remains on flight path Number of fins of rockets doesn’t affect the rocket stability Fins have no effect at low velocity near maximum height
- 56. Landing Methods
- 58. Methods of Safe Landing The first way is to use a parachute or other similar device to slow the descent of the rocket. Seeing a rocket launch, reach its peak, deploy a parachute and descend gracefully to Earth, is a really great sight. Parachute Recovery
- 59. The second way to safely launch your water rocket is to launch it at an angle. Tumble Recovery
- 60. Third way is to use bounce method. Add a tennis ball, ping-pong or other device to the nose of the rocket so that it bounces upon impact.
- 61. Another method is using the rocket's fins to slow its descent. Glide Recovery
- 62. Other Methods…..
- 63. Steamer Recovery Nose-blow Recovery And….
- 64. Helicopter Recovery ( :P)
- 65. Okay, so how do I make the water rocket ?
- 67. Weight (preferably sand ) for the nose cone.
- 68. Sunpack ( For making the fins ).
- 69. Scissors, pens , protactors , ruler , etc.
- 70. Nozzle
- 71. A launch pad
- 73. Nozzles
- 74. Body Design using bottles For starters use a single bottle , with an aerodynamic design. Test your bottle at 50-60 psi and then gradually increase to 75 psi, which would be a good and safe choice.
- 75. How to increase volume ? Method 1 : Robinson Coupling
- 77. How to increase volume ? Method 2 : Splicing
- 78. Body Design As smooth as possible. Long body design to lower body drag. Some design considerations:-
- 79. Nose-Cone Weight Lower the weight, the better it would fly. It is also important to add weight in proper places.
- 80. Nose Cone Design Nose helps to streamline the body and thus reduce the air drag. Ogive design is better option. Adding weight to the nose cone helps move the center of mass (CM) upwards.
- 83. Fin Design Size and Position Larger the fins and the further back they are placed on the rocket, the further back the center of pressure (CP) will be thus increasing the stability of rocket flight.
- 85. To make a rocket spin, angle the fins slightly when attaching the fins to the rocket or bend the tips of the fins in a pinwheel fashion.
- 90. Launch your rocket from a safe distance.
- 92. There’s lot to learn, explore and discover…
- 93. Let’s roll !
- 94. Can you identify the nebula ?
- 95. What is this ?
- 96. What is the pale blue dot ?
- 97. What is this?
- 98. What is strange with this clock ?
- 99. What is the occasion of this doodle?
Editor's Notes
- Hello everyone, I welcome you all to this wonderfull afternoon session with us on a workshop on Water Rocketry. I am Aakash Bhowmick. I am a second year student of Mechanical Engineering at IIT Kharagpur. I’d like to introduce my collegues : GokulRaveeRamanathan and Kelin Jose. Today we are also greatly honoured to have with us Mr. B R Guruprasad. He is a Public Relations Officer at Indian Space Research Organisation (ISRO) and he’ll be helping us with the workshop today. So let’s get the workshop started .Today we have some great stuff packed for you. Let’s have a sneek peak into the things we have in store for you.
- We’d like to hear more from you. These are some of the ways by which you can remain connected with us. You can register on the website and you will be added to our mailer. We’ll send you an online copy of our newletter Moonwalk.
- So I guess you all must be thinking, spAts , Space Technology Student’s Society , what does the society actually do ?
- Students in India , inspite of having deep interest in space scientists could not pursue a career because there were no resources available. No guidance was available as well. Contact of students with Indian Space Research Organisation was also very limited. So our basic aim was to get people interested in the world that exists beyond our planet earth. And one of our main aims is to help students carve out a career for themselves in this field, so that we can get bright space-scientist who will take Indian Space Research programme to great heights in the future.
- We work under the KalpanaChawla Space Technology Cell, or popularly known as KCSTC at IIT Kharagpur. KCSTC is the headquarters of ISRO at IIT Kharagpur. We have always been grateful to ISRO for their immense support that they have always provided us.
- We have a separate Astronomy Club with the society that is completely concerned with astronomy. The club collaborates with similar astronomy clubs at IIT Madras and IIT Delhi.
- This is 8’’ Newtonian Type Reflector Telescope. The guys here you can see is the man behind spAts. He is MayurMaheshwari. He has been deeply instrumental in taking spAts from its beginning footsteps to the big organisation that we are now.
- This is a small gallery of our works at IIT Kharagpur during IIT Kharagpur’s annual technical fest – Kshitij.
- Flight was an ability that was gifted only to the birds and we always wanted to soar up into the sky. Was this possible ?
- Let us look into the reasons what made us develop better rockets. It will help us appreciate the efforts that we are going to put into making of our water rockets. We can trace back the history of rocketry back to the times of the ancient greeks. Now we had a really wise man by the name of archystus. He thought “Can I use the pressurized steam to make something fly”. So he put a cork at the opening of a kettle of boiling water. And the inner pressure became very high , the cork came out flying.
- Tipu Sultan : He was the first person to use rockets for military purposes. This remarkable feat has been acknowledged by NASA by putting up his image in one of their galleries. A military tactic developed by Tipu Sultan and his father, Haidar Ali, was the use of mass attacks with rocket artillery brigades on infantry formations.
- While the rocket is travelling upwards, an area of high pressure will be created on one side of the two fins in the pitch or yaw axis. A corresponding area of low pressure will be created on the other side of the same two fins. This pressure difference between the two sides creates a lift force which acts about the CP(towards the low-pressure side), causing the rocket to pitch back in the opposite direction and hence restoring the rocket to its flight path. The diagram below attempts to illustrate this
- By increasing fin size, more drag is generated. Rocket is designed such that the relationship between center of gravity and the center of pressure of the empty rocket causes the fin-induced tendency of the rocket to tip nose down to be counteracted by the air resistance of the long body which would cause it to fall tail down, and resulting in the rocket falling sideways, slowly.
- The Cat’s Nebula : planetary nebula in the constellation of Draco. Structurally, it is one of the most complex nebulae known, with high-resolution Hubble Space Telescope observations revealing remarkable structures such as knots, jets, bubbles and sinewy arc-like features. In the center of the Cat's Eye there is a bright and hot star; around 1000 years ago this star lost its outer envelope, producing the nebula.It was discovered by William Herschel on February 15, 1786NGC 6543 : NGC stands for New General Catalog
- The APPLE satellite, being taken to the launch-site. Launched on June 19, 1981 by ISRO with the help of Ariane launch vehicle of ESA.
- The Pale Blue Dot is a photograph of planet Earth taken in 1990 by Voyager 1 from a record distance, showing it against the vastness of space. By request of Carl Sagan, NASA commanded the Voyager 1 spacecraft, having completed its primary mission and now leaving theSolar System, to turn its camera around and to take a photograph of Earth across a great expanse of space.
- Far side of the moon as clicked by the Lunar Reconnaissance Mission
- A leap second that is added to make up for the loss in time between UTC and mean solar time. A leap second is a positive or negative one-second adjustment to the Coordinated Universal Time (UTC) time scale that keeps it close to mean solar time. UTC, which is used as the basis for official time-of-day radio broadcasts for civil time, is maintained using extremely precise atomic clocks. To keep the UTC time scale close to mean solar time, UTC is occasionally corrected by an intercalary adjustment, or "leap", of one second.
- LHC was first operated on