FTC Nozzle

[Blenderite]

Water Rocket Expert,

Here is a really good simulator.

http://polyplex.org/rockets/simulation/

Make sure you don't skimp on your measurements or it will be off.

[Water Rocket Expert]

This is the sim I use alot.

[Reptiglorandrockets]

This is the sim I use alot.

Then you should know how high your rocket should go. I doubt a single stage rocket will go 700' at just 120 PSI.

[U.S. Water Rockets1]

I didn't heat shrink it I just glued the edges to it I think it ain't gonna work so I will just have to try to do your method after I test it. How high should it go? It is about 6.5 feet tall excluding nose cone part, has a ring fin and it will be pressurized to 120 psi. How much higher can I pump it to since it is not reinforced? Maybe it will go 700'?

Someone else will have to answer that. I typically don't pressurize over 100psi.

If the ends don't pop out, a Polycarbonate FTC tube will hold about 160PSI before failing. This will fly between 450 and 550 feet high, depending on how well made the rest of the rocket is (weight, fin alignment, and aerodynamics, etc.)

[Water Rocket Expert]

The sim said 678'. I could try to be more accurate with my inputs. Where do I get the carbon fiber or fiberglass or what ever you guys use to make it hold high pressure. I might try to hold 500 psi. If it is true that your pressure in the x-12 was over 1000 psi, what is the launcher made of?

[Water Rocket Expert]

This is the sim I use alot.

Then you should know how high your rocket should go. I doubt a single stage rocket will go 700' at just 120 PSI.

I did a better input but it still said 634'. Do you want a print screen posted?

[U.S. Water Rockets1]

This is the sim I use alot.

Then you should know how high your rocket should go. I doubt a single stage rocket will go 700' at just 120 PSI.

I did a better input but it still said 634'. Do you want a print screen posted?

Either your simulator is defective, you have input the wrong weight or drag values, or something. It won't go that high.

[Water Rocket Expert]

That sim is faulty.

[U.S. Water Rockets1]

The sim said 678'. I could try to be more accurate with my inputs. Where do I get the carbon fiber or fiberglass or what ever you guys use to make it hold high pressure. I might try to hold 500 psi. If it is true that your pressure in the x-12 was over 1000 psi, what is the launcher made of?

Our launchers are made of PVC or wood frames, plus steel, copper, brass, and some nylon and a little iron.

We use the Split Collar design for holding extremely high pressures, since it works so well and avoids needless complexity. http://www.uswaterrockets.com/construct ... torial.htm

You get carbon fiber online using google search. You should be able to get about 1 layer of it about 1 square inch in size for the price of a tornado tube. This will be good for a very tiny rocket.

Before you get hung up going to ultimate pressure, you will need to build a rocket from scratch that goes up and deploys a parachute and successfully lands first. After that you should try and find a suitable compressor or air source for high pressure. This can cost more than a rocket costs, so you may want too get this first so that you know what you can budget.

[Water Rocket Expert]

I have an air compressor to 150 psi and a long drive pump to 220 psi. I may purchase a tank for $180.