I can assure you that when the captains of a T26 and T45 drunkenly start comparing ship sizes in the mess they really would be down to getting their cocks out to compare size! (assuming they were male!) - the size difference in length is negligible and T26 will probably look a bit bulkier on the upperworks.Interesting article on potential plans for a future AD destroyer to replace the Type 45s. Apparently to be based on the Type 26 frigate design, which, to me, is a bit strange, as the T26s are that bit smaller than the T45s.
Of course, it may just be Bae flying a kite and angling to keep their Scottish facilities going but it's an interesting discussion as the T45s will need replacing and now is a reasonable time to start thinking about it.
The Type 4X is just an early concept at this stage but a variant of the Type 26 Frigate is officially being considered for the job.ukdefencejournal.org.uk
If 13+ is known to be bad ju-ju, what is the justification for saying "bollox to it, let's go with 13+" for T26?The T26 will probably be heavier - at least by end of life if the growth predictions come true. The really significant difference between T26 and T45 is hull depth (which is not the same as draught by the way). Generally speaking, for structural strength you want a length / depth ratio of between 10 and 13. Above 13 and you're into territory that might be described as "floppy". Which tends to lead to cracking problems (see T42BIII and T23 for details).
L/D ratio for T45 is a healthy 11.3. That for T26 is 13+
If 13+ is known to be bad ju-ju, what is the justification for saying "bollox to it, let's go with 13+" for T26?
Possibly because money has been a little tight over the last ten years or so?
Except that it's not the Great White Turbine that is the principal issue - and while RR understandably don't offer the module any longer, the basic gas generator should remain supportable. Napier should ensure that the remaining issues are fixed or mitigated.
Sadly not. Two things. Firstly see comment on no money above. Secondly Govan will struggle to glue any more ships together in addition to it's current T26 workload. As noted elsewhere, there's limited capacity to build anywhere else in UK, even if there was any money.
If only the colonials didn't have the UK recruitment agencies trying to get the UK pool of design staff to go and work for them, thereby reducing the number of bodies available in UK.
With unicorns?Design skills and build are arguably work aroundable.
There are plenty of places where T45 has issues or could have done better. However, the issues are gradually being addressed and the alternate options are now just "if-only?" interweb debating points.
Without design skills and build facilities all the wonderful HMS Armageddon ideas are just ideas - or next years filing cabinet chucking out lists.
For context, that would have Daring leaving service in 2030. That's 11 years away. She has yet to have her P&P upkeep period, which would knock a year or so off that.I can see them being pensioned off @ 20 years and something new bought.
Really. most of the engineers I've worked with use a lot of books because they don't want to reinvent the wheel. I wonder why this is different.Whatever the next AAW ship ends up being, one would hope that it is not based on T26.
Half the nausea in designing that ship resulted from the atrophying of ship design skills in the interval between T23 and T45, then to T26.
The "hullform" is just a shape. Developing that shape tends to cost <£5M, depending on the number of CFD analyses and model tests you end up doing. T26 hullform is optimised around one driving parameter, which is unlikely to be as relevant for an AAW ship.
You still have to produce the structural design, which will change depending on the weight distribution throughout the ship, which depends on the compartmentation and systems layouts. That's where you spend a lot of money, because the plate and section dimensions are necessarily different, as are the bulkhead positions, main machinery plant and other primary systems. All of which need detailed Class approval and then production drawings.
If you don't go through that exercise regularly, the people who know how to do it tend to retire / leave. It's not the sort of thing that you can just write in a book or a work instruction.
Whose propulsion system is currently being 'reworked' under Project Napier:Which leaves the T45...