On Navantia website. "Main electric motor installed on board S-81 "Isaac
Peral" February 15, 2012 when all was still well.
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Both Raytheon and Lockheed Martin have been selected to
compete to be the Combat System Integrator (CSI) for Australia’s Future
Submarine. Severe problems discovered in 2013 in Spain’s build of the S-80 Isaac Peral class provide a
cautionary tale of what can go wrong with overall program management and
presumably CSI.
Submarine Matter’s sitemeter indicated there was a lot of
Australian Government interest in 2010 with Spain’s S-80.
The S-80’s
construction was progressing rapidly and smoothly:
“SPAIN’S S-80: THE SEA 1000
DARK HORSE?” Asia Pacific Defence Reporter, September 30, 2010 http://www.asiapacificdefencereporter.com/articles/90/Spain-s-S-80-the-SEA-1000-dark-horse
indicated:
“The weapons payload [of the proposed S-80] includes not only [Atlas
Elektonik] DMA4 torpedoes and
sub-Harpoons but potentially Tactical Land Attack Missiles such as Tomahawk –
something that will be of great interest for Australia.
The S-80 seems to be the first completely
indigenously designed Spanish submarine for quite some time and the company has
drawn on a huge amount of previous experience to come up with a leading edge
product.
…A
critical part of a submarine is its combat system and sensors. For this
Navantia have turned to Lockheed Martin and what seems to be a version of their
Submarine Integrated Combat System (SUBICS). Lockheed Martin say that this
product has been derived from the company’s experience with the USN and use a
form of words suggesting that it is very similar to the combat system on the
‘Virginia’ Class nuclear submarines.”
But by 2013 major problems, unforeseen by Navantia, such as the
weight of what looks like the Combat System, including weapons, emerged.
Jose Matos, in “GROWING PAINS HIT SPAIN’S SUB FORCE, WARSHIPS
International Fleet Review April 2016 edition, (hardcopy, paywalled)
page 37 reported:
“…In May 2013 the first
major production flaw was revealed: Technicians discovered that the submarine’s
weight was [up to 100 tons] greater than originally designed and unevenly
distributed.
The initial calculations
were much lower than the final figures since the original figures did not account
for the weight of the weapons and electronics suite [sounds like the Combat
System], or features later introduced in the crew berthing areas….
[Navantia would need to]
reduce the submarine’s total weight or increase its length, to more optimally
distribute the excess weight. They opted to do the latter and increased the
length by nearly ten per cent, from 71 to 78 metres.”
As the US
AN/BYG-1 Combat System to be integrated into the Shortfin will likely be heavier
than the SUBTICS? Combat System for Barracuda SSN, special care will be
needed on weight and balance.
Pete
3 comments:
What can I say if the CAD/CAE design did not take into account the weight of the weapons and combat system. Since those weights amount to a significant Zero, even the best program manager cannot do much unless it can be sold as a submarine for tourists (then there is no need for weapons and combat system).
Still, having acquired plenty of grey hairs with multi vendor inter-operability on open standards, I can say integration of a proprietary US combat system with French proprietary sensors and French/other countries' proprietary weapons through proprietary interfaces will be very complex to say the least.
KQN
Hi Pete,
In your article you compare the integration of US system in the Navantia S-80 (which is a Scorpene design) with the the integration of US system in the DCNS Barracuda.
But you can't compare Navantia with DCNS.
They don't have the same level of expertise and experience in submarine's matters.
Before the Scorpene, Navantia was unable to build a submarine of their own.
The Scorpene was mainly a DCNS design.
Regards,
HDG
Dear Pete,
The S-80 uses the US system in quite a different way. The US provides the sensor suits but Spain develops the combat system and consoles.
https://es.m.wikipedia.org/wiki/Submarinos_Clase_S-80#Sensores
This way is quite easy because the Spanish system was not existing before and "just" developed" on top.
To connect to existing systems with maybe different design philosophies could be hell.
The English version of S-80 wikipedia is not very well. There are no 3 bio methanol engines with 1,200 kW each. These are just standard MTU 396 SE maybe able to burn methanol.
Interesting from the Spanish Wikipedia version are
- fuel cells by UTC Power, USA
- lithium batteries by Exide Technologies, USA, build by Spanish Tudor (owned by Exide)
- submerged endurance of 20 to 30 days at 4 kn.
- capable of launching cruise missiles and sub Harpoon (horizontal).
Regards,
MHalblaub
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