Water Rocket Forum

Do you think the launcher that US water rockets shows how to make is good. I have one similar. And for a booster rocket one with boosters do the boosters have to put out more thrust or the main rocket just weight more?

Water Rocket Expert wrote:Do you think the launcher that US water rockets shows how to make is good. I have one similar. And for a booster rocket one with boosters do the boosters have to put out more thrust or the main rocket just weight more?

You can't go by weight or thrust for that. You have to go by weight and thrust together over time, and that's acceleration. The easy way to make this calculation is to simulate a booster as if it were a single stage and then simulate the sustainer as a single stage. If the sustainer has a greater acceleration than the booster at any point during the booster thrust phase, then you will have a problem with the boosters falling off when still powered.

I've not seen the U.S Waterrockets booster rocket or launcher, so I can't say that it is any good or not. I need to look into it but couldn't find anything about it.

They don't have a booster rocket but they do have a launcher. The launcher part of my question was seperate. It was about how to construct a launcher. http://www.uswaterrockets.com/construct ... torial.htm

Water Rocket Expert wrote:They don't have a booster rocket but they do have a launcher. The launcher part of my question was seperate. It was about how to construct a launcher. http://www.uswaterrockets.com/construct ... torial.htm

That looks like a really well engineered launcher mechanism. Since it seems to work on their carbon rockets with huge pressures, I can't imagine you being able to make a rocket that would break it. Why didn't anyone think of this design ever before?

Team Seneca wrote:

Water Rocket Expert wrote:They don't have a booster rocket but they do have a launcher. The launcher part of my question was seperate. It was about how to construct a launcher. http://www.uswaterrockets.com/construct ... torial.htm

That looks like a really well engineered launcher mechanism. Since it seems to work on their carbon rockets with huge pressures, I can't imagine you being able to make a rocket that would break it. Why didn't anyone think of this design ever before?

Thatnks, Bill. But remember: we have no idea what the limit to the design is. It should be proportional to the number of cable ties and the strength of each one. It should be more than capable of holding down a cluster rocket.

Thatnks, Bill. But remember: we have no idea what the limit to the design is. It should be proportional to the number of cable ties and the strength of each one. It should be more than capable of holding down a cluster rocket.[/quote]

I have made mine with pulleys and the clamp method and I have drilled holes for stakes and also made the launch tube interchangeable.

Thatnks, Bill. But remember: we have no idea what the limit to the design is. It should be proportional to the number of cable ties and the strength of each one. It should be more than capable of holding down a cluster rocket.[/quote]

I have made mine with pulleys and the clamp method and I have drilled holes for stakes and also made the launch tube interchangeable.

Well, usually boosters are used for foaming rockets because these kinds of rockets produce lesser than normal thrust. So boosters are used to get it up to speed.
Try checking Air Command for tips.
www.aircommandrockets.com