https://padlet.com/mlian/usv7e34kvtls Made with serendipity en-us 2017-05-23 18:01:19 UTC 2025-09-28 11:35:07 UTC hello@padlet.com https://padlet.com/mlian/usv7e34kvtls/wish/173463372 I think we should use a narrow nose cone with a sharp tip. The tip will slice through the air and create less drag.

Ex.]]> 2017-05-23 18:05:23 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173463372 https://padlet.com/mlian/usv7e34kvtls/wish/173463555 I think we should add a sharp nose cone so it deos not block the air like if its  flat  then it would block all the air]]> 2017-05-23 18:06:05 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173463555 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/173463572 We should add a narrow nose cone with a very sharp tip. With a sharp tip on the top, it will go higher and faster. 
For example; 

]]> 2017-05-23 18:06:08 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173463572 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/173463614 I think we should use a narrow and compact nose cone because a narrow tip will work well with aerodynamics and the more compact the nose cone the smaller the area for wind drag.

]]> 2017-05-23 18:06:20 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173463614 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/173611634 This chart shows the different drag of different types of nose cones:]]> 2017-05-24 12:49:39 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173611634 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/173611878 I see that we all have the same idea for the nose cone, but what about how to connect it to the seltzer bottle? We should have a heavier because it is better to have a stronger base. Because of that we should put the nose cone on the cap.

]]> 2017-05-24 12:50:46 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173611878 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/173613226 I did some research and the best cone I could find was a long elliptical with a drag force of 4.149 although it has a 0.01 speed disadvantage versus the second best rocket the parabolic which goes 39.28 mph while the parabolic only goes 39.27 mph. The reason why the long elliptical is the best is it's drag beats the parabolic drag force by 0.328 with drag force of a parabolic rocket being 4.447.]]> 2017-05-24 12:56:30 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173613226 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/173618189 For the project we will be using a 1 liter, plastic vintage bottle.

]]> 2017-05-24 13:17:21 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173618189 https://padlet.com/mlian/usv7e34kvtls/wish/173622770 To connect the bottle to the fins, we can cut slits in the bottle and add slits to the fins. Then we could connect them. The fins will reduce drag if they are tilted downwards.

]]> 2017-05-24 13:35:36 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173622770 https://padlet.com/mlian/usv7e34kvtls/wish/173624734 For the fuel tank, we can cut the bottom out of our bottle and put fuel in their. I think we should fill the bottle very full, but make a sorta small cutout. If we do that, the rocket will go stright.

]]> 2017-05-24 13:43:13 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173624734 https://padlet.com/mlian/usv7e34kvtls/wish/173661824 We want to make our nose cone be able to cut through gravity, but also make it reduce drag. We need to choose one that reduces the most drag.]]> 2017-05-24 16:04:25 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173661824 https://padlet.com/mlian/usv7e34kvtls/wish/173662127 we should have a round sharp nose cone that dosent have to much wait and not enough wait so we should have it with medium wait]]> 2017-05-24 16:05:56 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173662127 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/173662268 I did some research and the best cone I could find was a long elliptical with a drag force of 4.149 although it has a 0.01 speed disadvantage versus the second best rocket the parabolic which goes 39.28 mph while the parabolic only goes 39.27 mph. The reason why the long elliptical is the best is it's drag beats the parabolic drag force by 0.328 with drag force of a parabolic rocket being 4.447.]]> 2017-05-24 16:06:30 UTC https://padlet.com/mlian/usv7e34kvtls/wish/173662268 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/174426555 The bottom of the seltzer can (Where the nose cone goes) is 26 cm.

]]> 2017-05-30 14:37:40 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174426555 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/174427656 Long Elliptical seems like the best nose cone. (The picture is glitching so just click it). ]]> 2017-05-30 14:42:03 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174427656 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/174428653 We also think that a parabolic nose cone would work too. (Look at the nose cone labeled parabola).]]> 2017-05-30 14:45:46 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174428653 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/174430815 1. Circumference: 26cm
2. Diameter: 8cm
3. Hollow (So it's lighter)
4. The wall of the nose cone (thickness): 5ml


]]> 2017-05-30 14:54:29 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174430815 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/174639991 2017-05-31 15:07:37 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174639991 ehaddad24 https://padlet.com/mlian/usv7e34kvtls/wish/174722184 i think these are good fins because they are not to big if they were big the air would not go through but this is good because it is not big so the air can go through and it looks like it will have good control in the air]]> 2017-06-01 00:27:58 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174722184 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/174722774 I definitely think the fins should be aerodynamic having a slanted top the and a vertical drop down forcing all the air pressure their forcing a air barrier which will keep the rocket in line. I also think the fin should be aerodynamic and have the least drag as Sammys picture shows.]]> 2017-06-01 00:33:47 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174722774 https://padlet.com/mlian/usv7e34kvtls/wish/174726114 The fins should have less air drag. The fins shouldn't point sideways, but be slanted sort of downward. We have already decided that they will be made of cardboard.]]> 2017-06-01 01:18:23 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174726114 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/174803362 The fins should have something with no holes, so either foam or cardboard. The both have holes, but cardboard has less holes. We decided to use cardboard fins and cover the holes with sealing tape. We also want the fins to be facing down just like Sammy said. ]]> 2017-06-01 12:57:42 UTC https://padlet.com/mlian/usv7e34kvtls/wish/174803362 cmaganas24 https://padlet.com/mlian/usv7e34kvtls/wish/176664655 I think that two major errors we made were having fins that fell off of the rockets and having fins with a different volume. I think we should have very air tight rockets to.

]]> 2017-06-16 13:18:06 UTC https://padlet.com/mlian/usv7e34kvtls/wish/176664655 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/176664757 We should use four fins and make them tall and wide]]> 2017-06-16 13:19:02 UTC https://padlet.com/mlian/usv7e34kvtls/wish/176664757 https://padlet.com/mlian/usv7e34kvtls/wish/176664808 A huge mistake that we made is that we used 7 fins; way to many. That weighted the rocket down. This time, we should use the top fins]]> 2017-06-16 13:19:35 UTC https://padlet.com/mlian/usv7e34kvtls/wish/176664808 kfitzgerald24 https://padlet.com/mlian/usv7e34kvtls/wish/176665366 I want to use the same fins as last time, but put them more to the bottom, add one more fin to the three fins, and make them a little bigger.]]> 2017-06-16 13:24:13 UTC https://padlet.com/mlian/usv7e34kvtls/wish/176665366 https://padlet.com/mlian/usv7e34kvtls/wish/176665687 2017-06-16 13:26:49 UTC https://padlet.com/mlian/usv7e34kvtls/wish/176665687