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Posted: Feb 13 2012, 04:06 PM
You have way too much time on your hands ...
Member No.: 8
Joined: 10-April 07
In my quest to develop an epic CVL, I have come accross lots of problems. Not the least of which is catapults. A CVL that can't fly CATOBAR aircraft (Even if just small ones) is one that is just too limited to be useful. And as steam quickly becomes a non-option for main propulsion (Manning needs), I have been at a loss outside of EMCAT/EMALS type stuff being developed now.
That is until recently.
Anyone hear anything about internal combustion catapults?
Near as I can tell, for the same general stroke length (And reduced internal volume), they work by using some sort of fuel and seawater to produce some rocket-like reaction (NE might know the chemicals in question, or Nian), which creates steam right in the tube. This, supposedly, matches or slightly exceeds total performance of existing modern steam catapults, but without the initial bump in high-G on the frame and then trailing-off power, it has a constant build up like EMCAT/EMALS.
My question is, anyone know anymore about this stuff?
I'm seriously considering it. It cuts my space down, manning down, and allows a CODAG type arrangement for my 20,000t CATOBAR CVL design.
Or is it too good to be true?
Posted: Feb 14 2012, 04:09 PM
60% Armaments Designer
Member No.: 74
Joined: 2-May 07
I'm aware of the old concepts, but don't really remember anything. If you feel like engaging a g2mil chap, check out this if you haven't already. The white paper discusses fuel selection.
Posted: Feb 15 2012, 12:52 AM
100% Armaments Designer, now what?
Member No.: 29
Joined: 11-April 07
Rocket-catapults and JATO-bottles.
Gun-type launchers have too harsh accelleration in raw form.
A really slow-burning proellant would be needed.
As for rockets, and mechanical dropwieghts, we've used those for quite awhile.
Alternately, rip a dozen old rocket motors (and a lot of obsolete life-rafts) and make a jet-powered donkey-sled. (Think of it as a reusable JATO, that burns LOX and blown-out aircraft-tires)