tag:blogger.com,1999:blog-19245896.post2595229949950737292..comments2024-03-29T11:12:54.229+11:00Comments on Submarine Matters & Australian Nuclear Weapons: Submarine Institute of Australia's Centenerary Conference 2014 - No Japanese Delegation?Pete2http://www.blogger.com/profile/06134037393078707072noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-19245896.post-35037339011649779962014-11-12T03:29:37.012+11:002014-11-12T03:29:37.012+11:00Dear Pete,
you write: "Repair facilities in ...Dear Pete,<br /><br />you write: "Repair facilities in Japan relatively close compared to Germany or France." <br /><br />On the other side you mention that South Korea already does build Type 214 submarines. Therefore Australia has repair facilities as far as Japan for submarines designed by TKMS.<br /><br />The engines are likely to be MTU 4000 based generators no matter which submarine. In case of rechargeable lithium batteries the MTU 396 offers not enough power to provide maximum current to charge the new type of batteries. The 28 MTU 4000 are already in RAAN use on 14 Armidale-class patrol boats. So Australia should know how reliable these engines are. The French SMX Ocean solution with six engines seems to be an ad hoc solution to provide enough power to charge the lithium batteries. <br /><br />Btw. Dolphin 2 class might already have lithium batteries and the MTU 4000. Only for Dolphin 1 class reliable information is available. Dolphin 2 class is a black box just like Type 218. I still believe these submarines are just relabeled Type 214 with enhanced propulsion MTU 4000 + lithium batteries. The price of 1 billion Euro for two submarines is just too low for more displacement. <br /><br />According to the SMX Ocean there is a big question mark about the second AIP technique proposed by DCNS. It is not so easy to reform a high quality fuel (hydrogen) for a fuel cell out of standard diesel oil. It might work with very clean bio diesel but “dirty” standard diesel could ruin the fuel cells or the filters very fast. DCNS will for sure offer replacements … Standard fuel cells work with pure hydrogen and oxygen. Methanol or ethanol reformer work rather well with clean fuel. Direct methanol fuel cells are best feed with bio ethanol with even less contamination than standard ethanol. <br />According to DCNS’ video clip MESMA is the worst AIP system available for long endurance missions – 14 days at 4 kn are just 1344 nm. The 2nd generation AIP by DCNS with an expected endurance of 21 is not much better than the 1st generation AIP on first batch of small German Type 212: proven endurance of 18 days.<br />http://www.welt.de/regionales/hamburg/article114619845/Deutschem-U-Boot-gelingt-Rekordfahrt-ueber-Atlantik.html<br /><br />SMX Ocean was a nice eye catcher for EURONAVAL 2014.<br /><br />Regards,<br />MHalblaub<br /><br /> -Nice pictures from old cars and buildings falling into pieces! -<br />Anonymousnoreply@blogger.com