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Jeff Head

Jeff Head

General
Registered Member
kwaigonegin said:
Anyway I don't know if the contrails are fake or not but if they weren't then there's only one type of engine that produces that kind of donut shape as it cuts through the air.

It's could be some sort of a rotating detonation wave engine generally known as PDE or pulse detonation engines.
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Pulse Detonation Wave Engines (PDWE).

They've been talked about for some time. I believe the first serious open scientific articles began coming out in the mid to late 1990s, but they were being researched well before that.

Here's a decent overview article from the IJMER Journal in 2012:

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Many believe that the US NRO through Lockheed's Skunk Works has had operational aircraft flying for the US NRO for over ten years. Whatever the so-called Aurora project is.
 
shen

shen

Senior Member
Jeff, I don't think the proposed LPD-17 BMD defense ship uses the same radar as Cobra Judy Replacement. The radars on USNS Howard O. Lorenzen are far bigger than the radar on the proposed LPD-17 variant. I've only read that the LPD-17 variant is supposed to have the Aegis BMD system, the radars are probably the larger AMDR 30+ version that wouldn't fit on Burke III. Also my understanding is that the LPD-17 variant is been proposed at pure BMD vessels rather than carrier escorts. In that case, their slow speed wouldn't matter that much.

The Cobra Judy replacement OTOH is seen as necessary to compliment Burke III in BMD mission, because Burke III can only carry the smaller AMDR-S 15+ radar.

Jeff Head said:
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This is the Cobra Judy Replacment ship. It is over 550 ft. long, a beam of over 85 ft. and displaces 13,000 tons. The technology surrounding the Dual Band Radar these ships employ, and their powerful sensor suite, is something the Navy is now talking about including (in a different form) in a modified version of the San Antonio Class hull to create a Missile Defense Ships to help defend Carrier Battle Groups which Huntington Ingalls is proposing.

Be nice to have one of these for each deployed CSG, and to be able to have it work in a cooperative engagement mode with the Burke IIAs and the Ticonderoga or future Burke IIIs defending the carrier.
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Jeff Head

Jeff Head

General
Registered Member
shen said:
Jeff, I don't think the proposed LPD-17 BMD defense ship uses the same radar as Cobra Judy Replacement. The radars on USNS Howard O. Lorenzen are far bigger than the radar on the proposed LPD-17 variant. I've only read that the LPD-17 variant is supposed to have the Aegis BMD system, the radars are probably the larger AMDR 30+ version that wouldn't fit on Burke III. Also my understanding is that the LPD-17 variant is been proposed at pure BMD vessels rather than carrier escorts. In that case, their slow speed wouldn't matter that much.

The Cobra Judy replacement OTOH is seen as necessary to compliment Burke III in BMD mission, because Burke III can only carry the smaller AMDR-S 15+ radar.
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You are correct. Bad wording by me...it is similar technology, but not the same radar.

I have heard that the BMD vessel will include a scaled version of the DBR that the Ford class is getting and not the reduced capability AMDR the Burke IIIs will get.

But thanks for the clarification, it is spot on. I will update my wording accordingly.
 
S

Skywatcher

Captain
Jeff Head said:
Agreed...I am not sure what their thoughts are in that regard.

Well, the San Antonio class list a speed of 22+ knots, so perhaps they will do what they can do and squeeze say, 27 knots, maybe 28 knots at the outside, and then stick with the carrier when they are deployed with it.

They have not listed what their thinking is. But clearly 23 or 24 knots is too slow.
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Disclaimer: I used to work for a Congress person from Maine (where BIW, HII's 'northern counterpart is located), but the views expressed in this forum and elsewhere online are purely and only my own.

It's possible that you might squeeze 27 knots from a San Antonio hull, but I don't know if the hull shape will give you the best fuel efficiency at that speed.
 
bd popeye

bd popeye

The Last Jedi
VIP Professional
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By Mass Communication Specialist 2nd Class Katie Lash, USS Theodore Roosevelt Public Affairs

USS THEODORE ROOSEVELT, At Sea (NNS) -- The aircraft carrier USS Theodore Roosevelt (CVN 71) launched and recovered E-2D Hawkeyes, from the Tiger Tails of Carrier Airborne Early Warning Squadron (VAW) 125, for the first time, Dec. 3.

With notable improvements and new features, the E-2D is a major advancement from the E-2C Hawkeye.

"The E-2D brings a significant number of improvements to the older E-2C," said Cmdr. Paul Lanzilotta, commanding officer of VAW-125. "The biggest thing is the sensor and radar systems. They are much more advanced in the E-2D. The E-2D is capable of seeing much farther and it is far more capable of detecting targets on the surface and in the air. This helps ensure the carrier strike group is adequately defended, even hundreds of miles away. We can see it all."

Other improvements include a fully integrated-all-glass-tactical cockpit, advanced identification friend-or-foe system, a new radar with both mechanical and electronic scanning capabilities, electronic support measures enhancements, new mission computers and tactical workstations.

"Along with the many technological advances, the E-2D is also a much smoother flying aircraft now," said Lanzilotta. "These aircraft are brand new. They still have that have that 'new car smell'."

After hundreds of practice landings on shore, the launch and recovery of the E-2D onboard Theodore Roosevelt begins VAW-125's final transition process from the E-2C to the E-2D.

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P

PanAsian

Major
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I wanted to put my theory out here in the forum regarding this story. Could it have anything to do with the Pentagon not wanting any Chinooks to fall into Chinese hands for reverse engineering?

I don't see it being a big concern with hostile Afghans, Iranians, or Russians getting their hands on one, the former two because they won't be able to do much with it, the latter because they probably already know as much about it as they want.
 
TerraN_EmpirE

TerraN_EmpirE

Tyrant King
ITs not about the Risk of it falling into the wrong hands its about money!
The Choppers in Question were Russian MI17's intended to the Afghan Airforce. These are vintage work horses have been around for Decades. The Worry then? The Russians sells to Iran. So buying from them is supporting a supporter of Iran. so its a boycott.
As for Chinook, Its a Veitnam Era Bird The Chinese could probably crank them off a line with there eyes closed and one hand tied behind there backs.
 
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Jeff Head

Jeff Head

General
Registered Member
PanAsian said:
Could it have anything to do with the Pentagon not wanting any Chinooks to fall into Chinese hands for reverse engineering?
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No, I personally do not think so.

It's more about US dollars being spent with Russians and giving them work when there are so many economic issues at home in the US.

The American people are getting tired of seeing their hard earned money taken in taxes and then spent like this on what most consider a corrupt regime anyway.

They would rather see the money spent on something that keeps Americans working. So they would rather see the US provide older U.S. helos that are dated to the Afghans, and then build others for ourselves.
 
P

PanAsian

Major
I think that it makes more sense for the US to recycle the aid to Afghanistan back into the US economy by selling them American-made Chinooks rather than buying them Russian Mi-17s which is why I am trying to figure out why the Pentagon is doing the opposite, they must have a good reason.
 
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