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:

Dragster Distance Duration

Discussions about water rocket powered cars, sleds or boats.
Post Reply
User avatar
Water Rocket Expert
WRA2 Member
WRA2 Member
Posts: 621
Joined: Fri Nov 22, 2013 10:39 am

Dragster Distance Duration

Post by Water Rocket Expert » Sat Dec 21, 2013 12:11 am

Hey everyone,

Can anyone answer my question. If I built a water rocket dragster, then would a reduced nozzle be good for distance, as I don't care about speed. Speed requires lots of stability. Also, is there any way to get the water more through the nozzle since the car is on its side, wouldn't a lot of air come out when water should be? Also, can we use Lego wheels?

Thanks


Water Rocket Expert
I'm 18
Maryland
"Anyone who has never made a mistake has never tried anything new." -Albert Einstein

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

Re: Dragster Distance Duration

Post by U.S. Water Rockets1 » Sat Dec 21, 2013 11:41 pm

Water Rocket Expert wrote:Hey everyone,

Can anyone answer my question. If I built a water rocket dragster, then would a reduced nozzle be good for distance, as I don't care about speed. Speed requires lots of stability. Also, is there any way to get the water more through the nozzle since the car is on its side, wouldn't a lot of air come out when water should be? Also, can we use Lego wheels?

Thanks
With a larger nozzle you can gain some advantage because the car will get up to a very high speed and the wheels will "bounce" over the irregularities in the ground or pavement. There will be less rolling friction on the wheels because they will not be in contact with the rough surface as much as they would if the car was going slower and contacting every imperfection in the surface.


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

User avatar
Water Rocket Expert
WRA2 Member
WRA2 Member
Posts: 621
Joined: Fri Nov 22, 2013 10:39 am

Re: Dragster Distance Duration

Post by Water Rocket Expert » Mon Jan 20, 2014 11:06 am

What about a two stageer!


Water Rocket Expert
I'm 18
Maryland
"Anyone who has never made a mistake has never tried anything new." -Albert Einstein

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: Dragster Distance Duration

Post by thampson » Mon Jan 20, 2014 8:25 pm

We found a smaller diameter nozzle made the length of time it took to expel the water longer which reduced acceleration, which in turn made the car more stable.

-todd-


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

Post Reply