Principles of Flight part-4

1. How did the height you estimated your rocket would reach compare with the actual
estimated height?  My estimated height was 40 meters high, but it probably reached 20 meters. I think it was because of the low water levels reaching 20% water level but other rockets had 50% water level. 

2. What do you think might have caused any differences in the height you achieved? Definitely the water percentage I had a really low water percent which was 20% when I was supposed to have 50% or higher. Another factor was the fins, the problem was I didn’t have any fins which can cause an imbalance and topple the rocket down.

3. Did your rocket launch straight up? If not, why do you think it veered off course? It launched straight but veered off a little when it turned. It was because it had no fins and also the weight was unbalanced.

4. Do you think that this activity was more rewarding to do alone? Would you have preferred to

do it in groups? Why or why not? I prefer it alone because it would be hard to work in groups, people would have different ideas and it would be less amusing on the launch date because there are fewer rockets.

5. Did you adjust your model rocket at all? How? Do you think this helped or hindered
your results? I did not adjust my rocket at all but if I were to, I would add fins and a better parachute mechanism.

6. How do you think the rocket would have behaved differently if it were launched in a
weightless atmosphere? It would gain height significantly, and continue upwards and slow down over time because of the air resistance. It would crash only if the rocket lost balance and turned 360 degrees and be propelled by thrust. I don’t think it would fall down because without weight there are no opposing forces (except drag).

7. What safety measures do you think engineers consider when launching a real rocket?
Consider the location of most launch sites as part of your answer. The engineers would go to a remote location and make sure spectators are so far away, that the smoke the rocket produces would not be able to reach the spectators. also, the launch pad would be heat resistant and the rocket would have to be designed well. I think they would launch somewhere where the location is near an ocean so that the rocket “cartridges” would land on the ocean instead of them landing on cities.

8. When engineers are designing a rocket which will carry people in addition to cargo, how
do you think the rocket will change in terms of structural design, functionality, and
features?  It would be reusable, cost less, eco-friendly, less risk to the astronaut by increasing the durability and even make it more aerodynamic by reducing the size and weight.

9. Do you think rocket designs will change a great deal over the next ten years? How?

Yes, why? Because of SpaceX. Rockets will prioritize being more eco-friendly and reusable.

10. What tradeoffs do engineers have to make when considering the space/weight of fuel
vs. the weight of cargo?  They have to make sure that the weight of the cargo will not counter the thrust force of the rocket engine. The less weight of the cargo means that there is less risk for the rocket not reaching the atmosphere.

Principles of Flight part-3

What have you learned about the history of rockets and space travel? Write a summary on the blog about something or someone you found interesting and tell why.

I thought it was interesting how important rockets are. If it weren’t for rockets, we wouldn’t have progressed as far as we would want to thanks to satellites. Also, the legend about Wan Hu is interesting. Did he survive? Was it recorded in scriptures? I have so many questions about it.

Now that you know about the basic parts of a rocket and what they do, write about each part and its importance in your own words. What will be different on your water rocket than on a “real” rocket and why?

The first part of the rocket is the nose cone. It is crucial for the rocket to break through the atmosphere. Of course, we won’t be reaching that far, but it is still important to reduce air friction and drag.

The payload is the second component, you don’t need it for the functionality of the rocket launch but rather the functionality of carrying something. A human, for example, we won’t be carrying a human in our rockets, but instead, an egg and we need to make sure it lands safely.

The third component is the propulsion chamber. This is the engine of the rocket and is called the rocket. It is used to launch the rocket with the use of thrust, typically using rocket fuel. We will be using water and pressure as our fuel, unfortunately.

The fourth component is the fin. This is necessary for the continued stability throughout the flight. It makes sure that the rocket can zip through the air while being upright because it needs to go up. We are going to use fins in our rockets too.

Write a little on the blog about how to find the Center of Pressure and the Center of Gravity on your rocket and why they are important.

The center of pressure is found by spinning the rocket around on an attached piece of string in the middle of the rocket if it flies straight, then it will succeed, if not then you need to adjust the cone weight or fin size. The center of gravity is found by balancing the rocket on the side. If there is a balance, then the center of gravity is located there. this is important to find out because you can fix your rocket if it acts irrationally, for example, if it flies backward then the center of pressure is in front of the center of gravity, therefore, you can fix it.

Based on what you have learned about rocket design (nose cone & fins) describe what your rocket will look like and why you chose that design on the blog.

My rocket will have an egg-shaped cone because it will be more durable and have more balance, it will probably have 3 fins and will be tall. The reason why is because my last rocket was successful with that same design.

Principles of Flight part-2

1. Draw a path of trajectory of your rocket

IMG_5443.TRIM-1sx32us

(🚀 Rocket goes up ⬆) (then ↗) (then ➡) (then ↘) (lastly⬇)

2. Which force is acting on the rocket at the moment of launch? (use arrows to indicate direction)

The force of thrust is acting on the initial rocket launch which makes the rocket go up. ⬆ Also, the force known as weight makes the rocket launch slower and air friction.

3. As the rocket was half-way up, which force(s) is/are acting on the rocket? (use arrows)

The rocket Is still being affected by air friction throughout the duration of the launch. It made the rocket go right because the air flowed unevenly during the launch. ↗

4. As the rocket begins to veer into another direction, which force is acting on the rocket? Explain why this is happening.

The force is known as weight. The reason why is because the force of gravity is pulling the rocket down and when the force of thrust isn’t enough to counter the effects of weight, then the rocket falls down. It falls cone facing downwards because the cone is heavier and slices through the air while falling down.

5. Did some rockets work better than others? How does the shape of the nose and fin affect the trajectory of the rocket? Explain in terms of the four forces that act on a rocket ship.

The main reason why the cone and fins are necessary is that the rocket will fly smoother than if you don’t have those items. For the cone, you can slice through the air and the fins stabilize the rockets and prevent them from turning. The first force is thrust, the power/force that counters gravity it will be easier to counter the gravity with a cone because it minimizes the friction second is weight/gravity this is the force you want to counter with thrust. The third force is drag, this is the opposite of thrust because it is the difference of air pressure and friction it is resistance. The last force is lift, because of Bernoulli’s principle, your rocket (commonly planes) move upwards this is the opposite of weight.

Rocket Simulator

http://sciencenetlinks.com/interactives/gravity.html

Why does the rocket fling around the moon/Earth?
What is an orbit?

The rocket flings around the moon/Earth because they have a lot of mass resulting in their own gravitational pull which attracts objects with less mass, an orbit means the smaller mass object is stuck looping around the greater mass object like the moon orbiting around the Earth.

http://www.ohio4h.org/statewide-programs/4-h-science/science-alive-4-h-school-enrichment/rockets-away-launch-simulator

What was your highest score?

altitude: 322.7

velocity: 48.9

flight time: 9

What were the settings of your highest score?

The settings were:

Pointiest Cone

Nose weight- 0.3

Body weight- 12

Tail weight- 12

Water. oz- 30

Psi: 120

 

Principles of Flight Part-1

Part 1- Tumble Glider

Explanation of Bernoulli’s Principle

The Bernoulli’s principle is used to describe anything lifting through fluids. We are talking about air in this case so I’ll explain how it works. The plane wing is designed to make sure that the air is lifting the plane. The lower part of the wing is creating slower air so that means there is higher pressure while the top of the wing creates less resistance resulting in lower pressure as the air is faster. This can work in water and any other fluids. (Air is a fluid)

The picture that Visualizes Bernoulli’s Principle

Credit goes to http://lakustascience.blogspot.com/2013/06/flight-and-air.html

Video of the test flight

Here is a demonstration:

TAG: FLIGHT