Underwater Rocket Launcher

[redboat219]

Hi guys, check this out-
http://designnews.com/article/CA6409229 ... 1007279293

great video!

[KevinMC]

This will be most useful....

This will be most useful....
Thanks much for sharing!

[redboat219]

This system could easily be

This system could easily be adapted to work just like the real thing in a model sub. A minor modification of the igniter assembly is all that's needed - instead of firing the rocket engine upon close contact with a magnet why not do the opposite, the withdrawal of the sensor from a magnet fires the rocket motor.
Here's the set-up. The rocket would sit inside the launch tube until ejected either by a spring or a puff of compressed air. As it leaves the tube the sensor loses track of a magnet placed inside the wall of the launcher firing the rocket motor as it breaks the waters surface.

[himszy]

instead of firing the rocket

<snip> instead of firing the rocket engine upon close contact with a magnet why not do the opposite, the withdrawal of the sensor from a magnet fires the rocket motor. <snip>

That sounds ALOT more dangerous (read lethal). What happens when your putting them in the tubes?

Also I'd go with hall effect sensors as they are solid state and so less likely to go wrong.

Michael

[redboat219]

http://www.subcommittee.com/forum/icon_eek.gif Ooops! Forgot to mention,

Ooops! Forgot to mention, you need to install a safety interlock!

[ramius-ii]

One Caution

From some years ago there was a post of someone who fired the rocket in his sub from his back yard pool. The problem is that once the rocket breaks the surface, direction can not be guarenteed! His "missile" when through a screen door and set fire to his neighbor's couch! Just something to consider.

Best, Ed

[KevinMC]

Hearing about something like this

Hearing about something like this does not surprise me, especially given the form factor of most SLBMs... Do you know if it was "scale"? (No fins)

SLBM's typically control their trajectory with vectored or differential thrust, removing the need for those nasty fins (and making them more amenable to being launched from a tube.) But a model rocket with no such guidance system built in the form of an SLBM (without fins) is going to go beserk when launched...

Launching model rockets from a model submarine can be done, and can be done safely, if you undersand what you need to do and how you need to do it...

[hakkikt]

In fact, most ICBMs control

In fact, most ICBMs control their trajectory by thrust vectoring rather than fins. When military parades are shown on television (usually with a text about some evil country acquiring weapons of mass destruction), they normally show anti-aircraft missiles - they are so much scarier with all those big & pointed fins sticking out.

[himszy]

Is there any difference between

Is there any difference between a cruise missile and a ballistic missile?

Michael

[JWLaRue]

(from Wikipedia)

Missiles which spend most

(from Wikipedia)

Missiles which spend most of their trajectory in unpowered flight, and which don't use aerodynamics to alter their course, are known as ballistic missiles (because their motion is largely governed by the laws of ballistics). These are in contrast to cruise missiles, which spend most of their trajectory in powered flight.

-Jeff

[himszy]

You learn something new everyday

You learn something new everyday

Thanks Jeff,

Michael

[Guest]

Kevin said it well. The

Kevin said it well. The reason I hesitate to promote my missile launcher is because of the potential for personal injury or damage to property. Notice the eye protection used before and during launches, as pictured in my avatar, before a launch. One of our local sub modelers injured an eye while experimenting with missiles. Safety first!

[mylo]

Let the nuke boat arms

Let the nuke boat arms race begin........... Mwwaaaaa haaa haaa *cough*.

[KevinMC]

Well Mylo, I dunno about

Well Mylo, I dunno about you, but I for one am working hard to be found in violation of the START treaty...

My latest project, Russian SS-N-19 Shipwreck (P-700 Granit) missiles and Type-53 torpedo parts all in 1/96 scale. Coming soon to an OSCAR II near you...


(Hey Ben! Are you still lookin' for that rematch???)



Safety Disclaimer
In all seriousness though, this is not a project to be undertaken lightly. As Art has wisely pointed out systems like this do have the potential to cause serious harm to life and limb, and great care must be exercised at all times. It is my intention to thoroughly put this system through the wringer in an isolated location before anyone will have the chance to see what it's all about.[/b]