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Old 12 May 2012, 12:57 PM
  #31  
CrisPDuk
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They really should have kept the Harriers in operation until the F35 could be proven to be an genuine, cost effective improvement over it, highly unlikely in my opinion

Even the US Marines don't want the VTOL version of the F35, they don't even own an assault carrier with a deck strong enough to take it. They had it forced upon them by the Bush administration, probably in an effort to disperse the spiralling costs


Slightly off topic; The USMC bought our remaining supposedly worn out Harriers for a pittance last year, allegedly as a source of spares for their own. Turns out that they have been so well maintained throughout their lives that most are going to be returned to flight status, allowing near life expired AV8s to be retired. Nice one Dave
Old 12 May 2012, 01:03 PM
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tony de wonderful
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Originally Posted by Luminous
For us the CATOBAR is not an off the shelf product as we are not using a nuclear powered aircraft carrier. Nuclear power makes use of a steam turbine, which in turn can power steam powered catapults. This is the normal way of doing things.

However, since we are going diesel electric (I think) and definitely have no steam on ship, we have to come up with another way of launching aircraft. I believe they were thinking of using a magnetic launch system similar in concept to the maglev systems for trains. However, this has never been done before, so the costs are unknown.

I think a better option is the SU-32, that uses a ski ramp to take off, no catapult assistance required. Its also not a VTOL aircraft, rather a "proper" fighter that lands using an arrester wire.
So we are even more retarded then as we have created another problem to solve which was unnecessary.

How did our old carriers create steam BTW? They sure were no nuclear powered.
Old 12 May 2012, 01:28 PM
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probably by boiling water

tbh steam is pretty old technology
Old 12 May 2012, 01:29 PM
  #34  
CrisPDuk
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Originally Posted by Luminous
For us the CATOBAR is not an off the shelf product as we are not using a nuclear powered aircraft carrier. Nuclear power makes use of a steam turbine, which in turn can power steam powered catapults. This is the normal way of doing things.

However, since we are going diesel electric (I think) and definitely have no steam on ship, we have to come up with another way of launching aircraft. I believe they were thinking of using a magnetic launch system similar in concept to the maglev systems for trains. However, this has never been done before, so the costs are unknown.

I think a better option is the SU-32, that uses a ski ramp to take off, no catapult assistance required. Its also not a VTOL aircraft, rather a "proper" fighter that lands using an arrester wire.
The next generation of USN carriers are intended to use linear induction motors in their catapults, like our new carriers were intended to. Theoretically it should be a straightforward development, since roller coaster operators have been using them very reliably, and far more intensively for over a decade, but you can pretty much guarantee that the various defence contractors will find a way of building in massive cost over-runs
Old 12 May 2012, 01:38 PM
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Originally Posted by tony de wonderful
So we are even more retarded then as we have created another problem to solve which was unnecessary.

How did our old carriers create steam BTW? They sure were no nuclear powered.
All the Royal Navy's previous carriers were driven by multiple steam turbines, as indeed are all those of the US Navy. They all have steam to spare for ancillary systems.

The only essential difference between between the two is how the water is boiled.

It's easy to see the attractions of the electro-magnetic catapult systems over a steam driven one, they will in theory be easier to position, install, operate and maintain, and will undoubtedly be easier on the airframes. But in terms of development, the costs, as I said in my previous post, have the potential to be astronomical
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