Author Topic: New Era for Navy: Cat-launched X-47B  (Read 2015 times)

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famousdayandyear

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New Era for Navy: Cat-launched X-47B
« on: November 30, 2012, 07:29:18 PM »

Offline Chieftain

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Re: New Era for Navy: Cat-launched X-47B
« Reply #1 on: November 30, 2012, 08:18:43 PM »
The real future of Naval Air is under construction at Newport News Shipbuilding and Drydock in Newport News, Virginia, in the form of the USS Gerald Ford, the lead vessel that will eventually replace the Nimitz hulls.

The Ford Class will not have steam catapults at all.  Instead they are being outfitted with EMALS, the ElectoMagnetic Aircraft Launching System that has been under development and is installed at NAEC Lakehurst NJ.  EMALS gives a more even and controlled acceleration to aircraft and is infinitely easier to control for aircraft just like the X-47B as well.

Think about how much weight you take off the hull by removing the steam catapults and replacing it with electrical load instead.  The Nimitz reactor plants were built to put out high volumes of hotel load steam for the cats and the ship propulsion system.  The Ford Class reactors are smaller and built to produce high volumes of electricity, both for the EMALS systems and the main propulsion which will be driven by electric motors instead of steam powered turbine and gear reduction systems.

Revolutionary design on the Ford, and worth checking out some pictures about....





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Offline Rapunzel

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Re: New Era for Navy: Cat-launched X-47B
« Reply #2 on: November 30, 2012, 08:18:56 PM »
steam catapult system????

Offline AbaraXas

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Re: New Era for Navy: Cat-launched X-47B
« Reply #3 on: November 30, 2012, 08:35:11 PM »

Offline Chieftain

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Re: New Era for Navy: Cat-launched X-47B
« Reply #4 on: November 30, 2012, 08:41:44 PM »
steam catapult system????

yep...they have the pressure down to around 500 PSI but the loading on airframes is erratic and spikes to extremes.  Composite aircraft like these stealthy planes cannot handle the launch loads imposed by the old steam catapults, and the electric rail gun will provide a programmed and controllable acceleration that does not overstress the airframe like the steam catapults do.

That's a good drawing AbaraXas, and that design has not changed significantly since the fifties when it was invented.  We made it bigger and better but it is still a shotgun approach to launching aircraft....and it is fun as all hell too...hard to top shooting fighters in full blower at night......

<a href="http://www.youtube.com/watch?v=DxuMK2dIDJE" target="_blank" class="aeva_link bbc_link new_win">http://www.youtube.com/watch?v=DxuMK2dIDJE</a>

Offline Atomic Cow

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Re: New Era for Navy: Cat-launched X-47B
« Reply #5 on: November 30, 2012, 08:41:58 PM »
You can see CVN-79 under construction on Google Earth and similar programs/sites.  Most of the images are a year or so out of date.  If you look @ the Google Earth image, the one with the U.S.S. Enterprise in it, CVN-79 is in the dock just north of Enterprise.
"...And these atomic bombs which science burst upon the world that night were strange, even to the men who used them."  H. G. Wells, The World Set Free, 1914

"The one pervading evil of democracy is the tyranny of the majority, or rather of that party, not always the majority, that succeeds, by force or fraud, in carrying elections." -Lord Acton

Offline mystery-ak

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Re: New Era for Navy: Cat-launched X-47B
« Reply #6 on: November 30, 2012, 08:45:09 PM »

Support the USO

Offline Chieftain

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Re: New Era for Navy: Cat-launched X-47B
« Reply #7 on: November 30, 2012, 08:52:17 PM »
<a href="http://www.youtube.com/watch?v=M6snTm9IRYE" target="_blank" class="aeva_link bbc_link new_win">http://www.youtube.com/watch?v=M6snTm9IRYE</a>

famousdayandyear

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Re: New Era for Navy: Cat-launched X-47B
« Reply #8 on: November 30, 2012, 09:06:31 PM »
yep...they have the pressure down to around 500 PSI but the loading on airframes is erratic and spikes to extremes.  Composite aircraft like these stealthy planes cannot handle the launch loads imposed by the old steam catapults, and the electric rail gun will provide a programmed and controllable acceleration that does not overstress the airframe like the steam catapults do.

That's a good drawing AbaraXas, and that design has not changed significantly since the fifties when it was invented.  We made it bigger and better but it is still a shotgun approach to launching aircraft....and it is fun as all hell too...hard to top shooting fighters in full blower at night....

And it must be fun as all hell too for landing one on a pitching, rolling deck at night :seeya:

famousdayandyear

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Re: New Era for Navy: Cat-launched X-47B
« Reply #9 on: November 30, 2012, 09:12:05 PM »
Don't think this one needs a cat:
<a href="http://www.youtube.com/watch?v=Ki86x1WKPmE" target="_blank" class="aeva_link bbc_link new_win">http://www.youtube.com/watch?v=Ki86x1WKPmE</a>

Offline GonzoGOP

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Re: New Era for Navy: Cat-launched X-47B
« Reply #10 on: December 10, 2012, 12:00:20 PM »
There are millions of paranoid people in the world, and they are all out to get me.


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