about Physics
Rocket Project
Rocket Picture
Rocket Log
- Today we made our new pressure chamber and started working on the parachute. I was super bummed that our first rocket exploded.
- Max, Keegan and I spent a lot more time on the parachute. We also cut our new Plexiglas fins.
- We glued the Fins on today. While we were gluing the fins on we ran out of glue.
- Made rocket longer and we named it Donald Trump, cause he's loaded.
- We had our first successful launch and our parachute deployed.
- Fixing parachute using string instead of fishing line.
- Spray painting rocket and putting money signs
- Another successful launch parachute deployed
Rocket Specs and Flight Information
Rocket Empty Mass: kg
0.16 kg
Rocket Charged Mass: kg
1.2 kg
Mass of Propellant Alone: kg
1.04 kg
Volume of Propellant: L
0.66 L
Launch Pressure: psi
95 psi
Number of Stages:
Single Stage
Friction Device:
Parachute
Area of Friction Device: m2
1m2
Max Angle at Launch Apex: degrees
44%
Observer Distance: ft
174 ft
Max Height: m
51m
Actual Flight Time: s
6.27s
Average Actual Velocity for Total Trip: m/s
8.134m/s
Theoretical Flight Time: s
6.44s
% Error in Flight time (due to fair friction): %
2.4%
Rocket Project Reflection
At the exhibition last week I wasn't totally satisfied with the results of our rocket but overall it was a pretty good launch. The parachute that I made deployed and worked great. Most of our friends rockets went 700 feet high but ours only went 200 feet high. Our parachute deployed so we got an A because everything on our rocket was prepared and functioned. The rocket definitely could have gone so much higher but we didn't prepare for a height challenge. Our procrastination kind of ruined chances to get the rocket the highest out of any groups.
After the launch I was happy that all my work with the parachute but also knew that I could have done more work with the other guys so our rocket could be more aerodynamic. I was mad at myself because I knew that the rocket trophy could have been mine. Our group worked very hard but didn't do the best we could. I think that I if I could do it all over again than I would have made better choices with my time frame and could have finished the parachute sooner. Overall I think our performance during the rocket project was above average.
After the launch I was happy that all my work with the parachute but also knew that I could have done more work with the other guys so our rocket could be more aerodynamic. I was mad at myself because I knew that the rocket trophy could have been mine. Our group worked very hard but didn't do the best we could. I think that I if I could do it all over again than I would have made better choices with my time frame and could have finished the parachute sooner. Overall I think our performance during the rocket project was above average.
Rocket Project Conclusion
In our rocket project our class we had to make a data table for the end of the project. Our group had to find out about our theoretical time and compare our real time to it. First, our group had to find the max height, we had to find the max height by multiplying the distance away from the rocket by our tangent angle. Then our group calculated the velocity by the dividing the distance by time. To find the theoretical height we had to take the max height and divide it by 1 half of acceleration due to gravity. To find the percent error you divide the actual time by the theoretical time. This would get you the percent error of what time you actually got compared to what you should have got. The lower this percent is the better you did. These are our teams numbers at the end of the project:
Distance Away- 174 ft
Angle- 44 degrees
Max height- 50.9 ft roughly
Velocity- 8.12 m/s
Theoretical Height- 10.38
Percent Error- 2.25% error.
Distance Away- 174 ft
Angle- 44 degrees
Max height- 50.9 ft roughly
Velocity- 8.12 m/s
Theoretical Height- 10.38
Percent Error- 2.25% error.