Fiberglass reinforced water rocket

[de0509]

hello, im just a noobie but once tried this idea at school for a competition.(im still young so dont expect too much). theres a way to make a parachute release mechanism which releases(or not) when it v=0(max height, but cant with parabolic as v never 0). i put 2 sets of fins. one small at cone, the large at main body. they spin different direction. and stick small block facing each other in nose(with cylinder part at bottom) and main bottle. so when move the blocks on cone press the

[de0509]

@de0509 blocks on main body creating friction as they 'should' turn different direction. so nose cone can stick to body until max height at least.

[tasosne]

SUPER!!!!!!

[DaanenPleunRockets]

Hi George,

Those launches looked realy nice! You have set us to some serious work breaking this height :-) with a single stage rocket!

If the weather is good we are going to launch our carbon rocket. And we are planning to make a new rocket but you will hear from that soon.

Daan

[gk123434534]

@DaanenPleunRockets Hi Daan, and thanks. :) The interesting thing was that the foam seemed to have carried it at least 100' higher than the sims were predicting. Good luck with the carbon rocket. It should be a screamer :)

[kwixson]

So, you going to go for reinforced fluorescent tube covers next?

[gk123434534]

@kwixson hi Kevin, no, no ftc rockets any time soon. We can only get T8 here and we found it too flexible and not enough volume. T12 would be better, but so far we still have lots of stuff to try with bottles so we'll keep going with those. :)

[redposs]

highest flights ever in history of aircommandrockets? Great job !

[gk123434534]

@redposs For a single stage yes, but last month we flew higher with a two stage rocket.

[toddhampson]

Excellent results .. well done George :)

[gk123434534]

@toddhampson Thanks Todd :)

[CH20Rockets]

Very impressive with your rockets.Right now I am actually waiting for my first, hopefully successful splice works. Tomorrow is day 5 of the curing so it ought to be done.

[maxquintx]

beautiful # 3, how do you measure how high it is?

[OMFGTHISSOSUX2]

@maxquintx I believe they have altimeters in their rockets.

[gk123434534]

@maxquintx We use a barometric altimeter to measure the altitude.

[henno1029]

4:10

the real earth...

really good video

[Danielastronomo]

What a great job George! Its awesome the pressure you have pressurized this rocket. Maybe use high pressure on water rockets with boosters could be interesting :).

[gk123434534]

@Danielastronomo Hi Daniel, boosters and two stage rockets using these reinforced bottles are on the plans for this year :)

[linuxdude1]

keep up the good work! I still think you should try hydrogen peroxide 90% and silver nozzles for higher flight.

[Serostern]

@linuxdude1 Then it's not a waterrocket anymore ;D

[superpippo1996]

hi george wanted to know how you bent your parachutes, because I was struck shortly after the start by the release

[deivis004]

super flight :D

[StnAlberti]

Great video...

You will test a convergent-divergent nozzle? Maybe now works, as the pressures increased...

[gk123434534]

@StnAlberti Yes we will need to revisit CD nozzles with the higher pressures. Probably start with static tests first though to measure if there is a real difference.

[Serostern]

Around twice the normal psi?

[gk123434534]

@Serostern Yes about twice the pressure of the unreinforced bottles.

[Serostern]

@gk123434534 How much difference in thrust percent and height is it between one at 130 and another on 230, both with the same size, ammount of water, nossle etc?

[gk123434534]

@Serostern A rocket this size with unreinforced bottles goes between 350-400 feet at 130psi. At 230 psi the reinforced (and heavier) rocket goes to about 700 feet.

[Serostern]

@gk123434534 Sweet, Suppose you triple the psi, could you hit a thousand feet?

That would take a heavier rocket, but...? =P

By the way, have you thought of spherical "tanks"? Like 8 of them in series, since spheres are stirdy? Maybe you could cut some weight and gain some psi?

[gk123434534]

@Serostern It isn't necessarily about increasing pressure to get more altitude. Reducing drag and weight also significantly contribute to altitude gain. There are always tradeoffs that need to balanced against each other. Spherical tanks may hold more pressure but also have a lot of drag. I'm not sure but I think a thinner, lighter tube that holds less pressure is likely to give better performance than a series of spherical tanks.

[Serostern]

@gk123434534 Encapsulate the spheres in a tube? Aerodynamics + more psi?

Have you run any tests with reinforcement by using metal bands? Or is it way way way too heavy?

What does this fiberglass rocket weigh (empty)?

[CottenJet]

nice video^^

[promethium144]

Truly a beautyful launch well done guys im going to have to try that myself those two rockets at the end ...... Sweeeeeeeet :) look forward to the vid keep up the good work