Building Bottle Rockets

Locked
bob32
Member
Member
Posts: 2
Joined: September 7th, 2016, 5:34 pm
Has thanked: 0
Been thanked: 0

Building Bottle Rockets

Post by bob32 » October 15th, 2016, 5:27 pm

What would you make the nose cone of bottle rockets out of? I'm considering construction paper wrapped in duct tape for reinforcement. Would this be a good idea?

User avatar
SenseiSushi
Member
Member
Posts: 110
Joined: April 28th, 2015, 3:51 pm
Division: C
State: PA
Location: Los Estados Unidos
Has thanked: 0
Been thanked: 0
Contact:

Re: Building Bottle Rockets

Post by SenseiSushi » October 15th, 2016, 6:20 pm

bob32 wrote:What would you make the nose cone of bottle rockets out of? I'm considering construction paper wrapped in duct tape for reinforcement. Would this be a good idea?
In my experience, construction paper isn't the greatest material to use for nose cones as it is quite flimsy and doesn't hold its shape after launching. I prefer to use other soda bottles and a backslider for my nose cones although I have seen other teams use plastic sheets and styrofoam cups.

Nose cone made from other soda bottle

Also last year's page on bottle rockets may be a good reference.
Userpage
2014 States: R&M-4th, Sounds of Music-5th
2015 States: Crime Busters-2nd, Green Gen-2nd
2015 Nationals: Green Generation-1st
2015 Swap Meet: Cheese Hat
2016 States: Green Gen-1st, Exp Des-5th, Scrambler-6th
2016 Nationals: Green Generation-1st

User avatar
Fanglin
Member
Member
Posts: 116
Joined: November 22nd, 2015, 12:36 pm
Division: C
State: CA
Location: Offline Probably
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by Fanglin » December 10th, 2016, 12:15 pm

bob32 wrote:What would you make the nose cone of bottle rockets out of? I'm considering construction paper wrapped in duct tape for reinforcement. Would this be a good idea?
The best is Plastic Film. It's light, and simple.
You can probably get a decently sized roll at a craft store.

The most efficient (I used at nationals) is 0.07 inch thick clear plastic film. You can make a cone shape, or a cylinder. Both should work on a 1 liter bottle.

Shchakrabarti
Member
Member
Posts: 3
Joined: December 13th, 2016, 11:33 am
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by Shchakrabarti » December 13th, 2016, 11:35 am

Where did you buy the film could you post a link? Thanks

User avatar
Fanglin
Member
Member
Posts: 116
Joined: November 22nd, 2015, 12:36 pm
Division: C
State: CA
Location: Offline Probably
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by Fanglin » December 17th, 2016, 3:44 pm

Shchakrabarti wrote:Where did you buy the film could you post a link? Thanks
I bought my film at a local art shop. So if you have any of those, its probably best to look there first. Anyway: I found this online store that sells a variety of sizes: http://www.eplastics.com/Clear_Polyester_Film

I would suggest the 0.007 inch thick sheets.

I've also tried out the 0.005 inch sheets, but they often times collapsed upon launch.
I haven't tried it out on a 1 liter bottle yet, so if you're willing to experiment to reduce even more weight, then 0.005 might be an option.

I would also suggest to get some corrugated plastic signs of some sort to use as fins. (You can get them at ACE)
For my rockets I used the following two fin designs:
Rocket 1:
Trapezoid-like shape, with a corrugated plastic leading edge (like 3cm worth) and then a trailing edge of plastic film, taped to the corrugated plastic, and the bottle. (I used 0.005, but 0.007 works too)

Rocket 2:
Same concept with the corrugated plastic, but now only 2cm worth, and a flexible carbon fibre dowel keeping a 0.003" trailing edge of film taught.

Sorry about the poor description.
Keep in mind that these were all used on 2 liter bottles last year, so try experimenting with the two materials and find out what works best for your rocket.

Shchakrabarti
Member
Member
Posts: 3
Joined: December 13th, 2016, 11:33 am
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by Shchakrabarti » December 17th, 2016, 5:13 pm

Thanks for the help, ill test out for the 1 liter and see if i worked equally efficient.

sunitha
Member
Member
Posts: 2
Joined: December 28th, 2016, 11:27 pm
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by sunitha » December 28th, 2016, 11:31 pm

Hi everyone,
This is my first time coaching bottle rockets. What materials are used as backslider? Can someone please share details.
I checked homedepot and they seem to be very heavy. I see some plastic tubes being sold on amazon. I am not sure if they would work.
Also, since the bottle size is 1L this year, is a long backslider a good idea, or would another bottle with a nosecone a better idea.
Thank you for your help.

Regards.

User avatar
kendreaditya
Member
Member
Posts: 111
Joined: March 31st, 2016, 3:28 pm
Division: C
State: PA
Location: Mariana Trench
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by kendreaditya » January 11th, 2017, 9:25 pm

sunitha wrote:Hi everyone,
This is my first time coaching bottle rockets. What materials are used as backslider? Can someone please share details.
I checked homedepot and they seem to be very heavy. I see some plastic tubes being sold on amazon. I am not sure if they would work.
Also, since the bottle size is 1L this year, is a long backslider a good idea, or would another bottle with a nosecone a better idea.
Thank you for your help.

Regards.
I am a student but I have been doing bottle rockets for 3 years now and have won 2nd at the second that the state level in PA. So i am okay at this.

Make sure the students read the scioly bottle rockets forms often

Make sure the students read the rules at least 5 times

Read: viewtopic.php?f=249&t=9987 and https://scioly.org/wiki/index.php/Bottle_Rocket Read until they understand it

Materials:
Nosecone:
Basic: http://www.homedepot.com/p/Lithonia-Lig ... /100163152
Advanced: https://www.amazon.com/gp/product/B006Z ... 1RQFAUOIGI

Fins: http://txsnapper.eezway.org/waterrocket ... erfin.html

Picture: https://s15.postimg.org/qtd9oc0p7/20161129_233544.jpg

Best Website: http://txsnapper.eezway.org/powerdeployment/

Water rocket simulator: http://www.sciencebits.com/RocketCalcul ... omForm=yes

The most important thing: TEST, TEST, TEST and some more TESTING

Sasstiel
Member
Member
Posts: 32
Joined: January 11th, 2017, 12:08 pm
Division: B
State: IL
Location: On Earth!
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by Sasstiel » January 23rd, 2017, 6:45 pm

This is my first time...anything I need to know that wouldn't be on the rules?
DFTBA!
Exp Des, Wind, Food, and Bottle

User avatar
kendreaditya
Member
Member
Posts: 111
Joined: March 31st, 2016, 3:28 pm
Division: C
State: PA
Location: Mariana Trench
Has thanked: 0
Been thanked: 0

Re: Building Bottle Rockets

Post by kendreaditya » March 7th, 2017, 5:01 pm

Sasstiel wrote:This is my first time...anything I need to know that wouldn't be on the rules?
Not really, but make sure you read they and check the rules line by line before competition.

Locked

Return to “Bottle Rocket B”

Who is online

Users browsing this forum: No registered users and 1 guest