Welcome to the Water Rocket Forum, sponsored by The Water Rocket Achievement World Record Association.

Since our founding in 2003, we've become the largest, most sophisticated and ground breaking group supporting you, the serious water rocket flyer! Whether you are a beginner or an expert, the WRA2 has something for everyone.

A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.


Hello Everyone. It is that time of year again. Time to approve changes to the competition rules for the new year.

You Can vote at:
viewtopic.php?f=32&p=19486#p19486

Please take the time to vote. TH:

WRC with vertical bottles

Discussions about water rocket powered cars, sleds or boats.
Post Reply
User avatar
RaZias
WRA2 Member
WRA2 Member
Posts: 751
Joined: Mon Jul 14, 2008 3:16 pm

WRC with vertical bottles

Post by RaZias » Sun Aug 23, 2009 12:40 pm

A video of WRC with vertical bottles

http://www.youtube.com/watch?v=Ov4s0DlHCIE


Research and Development is the soul of WR

Bellarossa
Advanced Member
Advanced Member
Posts: 19
Joined: Thu Nov 29, 2007 8:45 pm

Re: WRC with vertical bottles

Post by Bellarossa » Sun Aug 23, 2009 2:16 pm

RaZias wrote:A video of WRC with vertical bottles

http://www.youtube.com/watch?v=Ov4s0DlHCIE
Those cars should not be that stable. That look too top heavy. How do they keep them upright?


_ .~'''~._ .~' Dom '~._ .~''~._

User avatar
thampson
Current WRA2 Dragster Speed & Distance Record Holder
Current WRA2 Dragster Speed & Distance Record Holder
Posts: 232
Joined: Wed Jul 16, 2008 8:19 am

Re: WRC with vertical bottles

Post by thampson » Mon Aug 24, 2009 10:04 am

RaZias,

another good video .. thanks for finding it and sharing ....

those basketball steel poles would have to be like magnets to the water rocket cars :) .. kind of like tress are to the vertical water rocket guys :)

-todd-


HHWRSA
Hornsby Heights Water Rocket Space Agency
http://wrocket.hampson.net.au

Adib131
New Member
Posts: 1
Joined: Fri Aug 12, 2011 11:57 am

Re: WRC with vertical bottles

Post by Adib131 » Thu Aug 25, 2011 8:00 pm

dear all :D ,

water rocket car with a vertical or horizontal bottle, which is better? TH:



User avatar
RaZias
WRA2 Member
WRA2 Member
Posts: 751
Joined: Mon Jul 14, 2008 3:16 pm

Re: WRC with vertical bottles

Post by RaZias » Sat Aug 27, 2011 4:43 am

Adib131 wrote:dear all :D ,

water rocket car with a vertical or horizontal bottle, which is better? TH:
---- Vertical bottle:

- They are heavier because they need connectors for each bottle.
- Less aerodynamic
- Less water slosh ? Or not ?

---- Horizontal bottle:

- Lighter (no connection needed) BUT for each bottle the wood pataform needs to be longer so there
is a weight increase.

- More aerodynamic
- Bottles are more prone to blast because they are connected by glue.

- Water may slosh inside the rocket or remain there increasing the weight
(I think only the current WR-Dragster record holder knows the answear)

---- Result:

Maybe the horizontal ones ????


Research and Development is the soul of WR

User avatar
RaZias
WRA2 Member
WRA2 Member
Posts: 751
Joined: Mon Jul 14, 2008 3:16 pm

Re: WRC with vertical bottles

Post by RaZias » Sat Aug 27, 2011 4:50 am

Bellarossa wrote:
RaZias wrote:A video of WRC with vertical bottles

http://www.youtube.com/watch?v=Ov4s0DlHCIE
Those cars should not be that stable. That look too top heavy. How do they keep them upright?

I think it´s luck because they had several lauches and they went bad:

http://www.youtube.com/watch?v=OrzPUa-1Sx0&NR=1


Research and Development is the soul of WR

User avatar
U.S. Water Rockets1
WRA2 Member
WRA2 Member
Posts: 1771
Joined: Sat Feb 03, 2007 3:24 pm

Re: WRC with vertical bottles

Post by U.S. Water Rockets1 » Sat Aug 27, 2011 10:01 pm

RaZias wrote:
Bellarossa wrote:
RaZias wrote:A video of WRC with vertical bottles

http://www.youtube.com/watch?v=Ov4s0DlHCIE
Those cars should not be that stable. That look too top heavy. How do they keep them upright?

I think it´s luck because they had several lauches and they went bad:

http://www.youtube.com/watch?v=OrzPUa-1Sx0&NR=1

You guys are right. The vertical bottles would really raise the center of gravity and make the car unstable. Think of an SUV compared to a sports car.


Team U.S. Water Rockets
Visit USWaterRockets.com
Visit our Blog
Tune in to our YouTube Channel
Visit our Facebook page
Visit our Twitter Page
Opportunity is missed by most people because it is dressed in overalls and looks like work. --Thomas Edison

Post Reply